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Equipment & Gear => Guns and Ammo => Topic started by: jasnt on May 20, 2019, 04:19:18 PM


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Title: Throating for the 300’s
Post by: jasnt on May 20, 2019, 04:19:18 PM
Last night the .338 throat reamer showed up.   I had a little time so I pulled my barrel on the 338/375 XL and set up the ptg uni-throater about .025” short of my goal depth.  Very surprising how fast it cuts! And yorke’s bushing fit my barrel very snug. Once I cut that I checked with dummy round and started doing .005” jumps which it cut in about 1 revolution.  I may go anther .030-.050” but haven’t decided  yet.  Boat tail/ bearing junction is right at the bottom of the neck. 

Before doing this I could shoot the 300gr EH @2650 before preasure signs
Today I did a quick preasure test and got preasure at 2800 and stiff bolt lift at 2830
Looks like my node will be 2750ish

More to come
Title: Re: Throating for the 300’s
Post by: b23 on May 20, 2019, 04:47:17 PM
I know you've told me you're no particular fan of Hornady bullets, but I think the 285gr ELD-M would suit your cartridge really well.  I bet you could get an extra 75-100fps with the 285 ELD-M over the 300 Bergers and those 285's even have a slightly better BC.
Title: Re: Throating for the 300’s
Post by: Biggerhammer on May 20, 2019, 05:57:02 PM
I was shooting the 300gr Berger’s. Once I went to the 285gr Hornady’s. I never went back to the Berger’s, the Hornady’s shoot incredibly well and flat crush game. The 230gr ELD-X is a excellent hunting bullets as well.
Title: Re: Throating for the 300’s
Post by: jasnt on May 20, 2019, 06:29:14 PM
I know I’m a bullet snob.  But running the numbers even at 2850 I gain .3 moa of elevation and loose some in wind at 2000 yards.   
Title: Re: Throating for the 300’s
Post by: Biggerhammer on May 20, 2019, 06:55:26 PM
At the distances your shooting the 300gr shines.
Title: Re: Throating for the 300’s
Post by: yorketransport on May 20, 2019, 08:30:24 PM
Sorry it took me like a week to get that in the mail to you! It's crazy how fast you can go from no freebore to a Weatherby style freebore the length of an air strip with one of those throating tools. :chuckle:

I've been tempted to take the throating reamer to my 338/375 Ruger pistol, but I just can't convince myself to do it.
Title: Re: Throating for the 300’s
Post by: jasnt on May 20, 2019, 09:20:45 PM
Sorry it took me like a week to get that in the mail to you! It's crazy how fast you can go from no freebore to a Weatherby style freebore the length of an air strip with one of those throating tools. :chuckle:

I've been tempted to take the throating reamer to my 338/375 Ruger pistol, but I just can't convince myself to do it.
thank you again for sending it.
It does look crazy long, and plenty of room to chase.
Title: Re: Throating for the 300’s
Post by: Reidus on May 20, 2019, 09:51:23 PM
 It's amazing how little material you have to remove to extend the throat.
Title: Re: Throating for the 300’s
Post by: jasnt on May 21, 2019, 07:55:10 PM
Took it out another.035” tonight
Coal is 3.990 and bto @15k off is 3.050.   Hopefully get a smooth load at 2800 With out beating up the brass
Left to right
New coal, old coal, mag fed coal
Title: Re: Throating for the 300’s
Post by: Biggerhammer on May 21, 2019, 08:56:11 PM
Benchmark barrels .338 Edge reamer put me @ 4.060 (COAL) with the Berger 300 Hybrid 15K into the lands and they shoot incredibly well! 
Title: Re: Throating for the 300’s
Post by: jasnt on May 21, 2019, 09:37:09 PM
Benchmark barrels .338 Edge reamer put me @ 4.060 (COAL) with the Berger 300 Hybrid 15K into the lands and they shoot incredibly well! 
hows the 375 bme coming along?
Title: Re: Throating for the 300’s
Post by: hogslayer on May 23, 2019, 05:50:02 PM
The OTM like them .015 in.  I have the 300 EH shooting good either .003 in or .025 off
Title: Re: Throating for the 300’s
Post by: jasnt on May 23, 2019, 07:03:29 PM
The 250’s liked .015 off but I’m getting some fliers with the 300’s. Going to do a seating depth test this week
Title: Re: Throating for the 300’s
Post by: jasnt on May 24, 2019, 09:01:34 PM
Think I found my load.  .005” off @2715 fps
Es of 11
Title: Re: Throating for the 300’s
Post by: b23 on May 24, 2019, 10:29:51 PM
Think I found my load.  .005” off @2715 fps
Es of 11

You can try, but I think it'll be pretty hard to improve on that.  Well done!  :tup:

Any of the guns I shoot Berger bullets in have always shot their best right around the 5 thou off mark.
Title: Re: Throating for the 300’s
Post by: jasnt on May 24, 2019, 10:32:51 PM
Tomorrow I’m going to test them at 1800 see how it goes.  If I can get a hold the wind that is.  Bears beware I’ll be looking for you 😎
Title: Re: Throating for the 300’s
Post by: jasnt on May 25, 2019, 06:29:22 PM
Well it did well at a mile(1755 yards) today.  I’m happy with it.  Trying to get video from GoPro to my phone.  Target was 2 moa black spot on the cliff

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Title: Re: Throating for the 300’s
Post by: yorketransport on May 25, 2019, 06:40:25 PM
Well it did well at a mile(1755 yards) today.  I’m happy with it.  Trying to get video from GoPro to my phone.  Target was 2 moa black spot on the cliff

Are you using the GoPro app on your phone?

I'm a little surprised by your velocity, I expected it to be higher.
Title: Re: Throating for the 300’s
Post by: jasnt on May 25, 2019, 06:49:33 PM
Well it did well at a mile(1755 yards) today.  I’m happy with it.  Trying to get video from GoPro to my phone.  Target was 2 moa black spot on the cliff

Are you using the GoPro app on your phone?

I'm a little surprised by your velocity, I expected it to be higher.
yes and I got it figured out.   Could go faster but it’s hard on the hornady brass. This load has zero preasure signs
Title: Re: Throating for the 300’s
Post by: jasnt on May 29, 2019, 07:25:48 AM
I may have enough capacity now for retumbo. With h1000 I’m no longer getting compressed before preasure.  May pick up an lb and see how it does
Title: Re: Throating for the 300’s
Post by: b23 on May 29, 2019, 08:24:17 AM
I may have enough capacity now for retumbo. With h1000 I’m no longer getting compressed before preasure.  May pick up an lb and see how it does

Retumbo is a bit slower, but it's so darn bulky and takes up so much space I'm not sure if you could even get enough in the case to outrun your H1000 load. 

It's unfortunate Viht N570 is nearly impossible to get because I'd bet N570 would give you another 100 fps over H1000.
Title: Re: Throating for the 300’s
Post by: jasnt on May 29, 2019, 10:21:02 AM
I may have enough capacity now for retumbo. With h1000 I’m no longer getting compressed before preasure.  May pick up an lb and see how it does

Retumbo is a bit slower, but it's so darn bulky and takes up so much space I'm not sure if you could even get enough in the case to outrun your H1000 load. 

It's unfortunate Viht N570 is nearly impossible to get because I'd bet N570 would give you another 100 fps over H1000.
i really just need to step up to cheytac. 
Title: Re: Throating for the 300’s
Post by: yorketransport on May 29, 2019, 02:24:09 PM
I may have enough capacity now for retumbo. With h1000 I’m no longer getting compressed before preasure.  May pick up an lb and see how it does

Retumbo is a bit slower, but it's so darn bulky and takes up so much space I'm not sure if you could even get enough in the case to outrun your H1000 load. 

It's unfortunate Viht N570 is nearly impossible to get because I'd bet N570 would give you another 100 fps over H1000.
i really just need to step up to cheytac.

Yes, yes you do....... :stirthepot:
Title: Re: Throating for the 300’s
Post by: jasnt on May 29, 2019, 02:28:30 PM
I may have enough capacity now for retumbo. With h1000 I’m no longer getting compressed before preasure.  May pick up an lb and see how it does

Retumbo is a bit slower, but it's so darn bulky and takes up so much space I'm not sure if you could even get enough in the case to outrun your H1000 load. 

It's unfortunate Viht N570 is nearly impossible to get because I'd bet N570 would give you another 100 fps over H1000.
i really just need to step up to cheytac.

Yes, yes you do....... :stirthepot:
ill trade ya my 243 for that Lawton :chuckle: then you’ll have no excuse if you loose one of those prs shoots 😎
Title: Re: Throating for the 300’s
Post by: Biggerhammer on May 29, 2019, 07:34:12 PM
I may have enough capacity now for retumbo. With h1000 I’m no longer getting compressed before preasure.  May pick up an lb and see how it does

Retumbo is a bit slower, but it's so darn bulky and takes up so much space I'm not sure if you could even get enough in the case to outrun your H1000 load. 

It's unfortunate Viht N570 is nearly impossible to get because I'd bet N570 would give you another 100 fps over H1000.
i really just need to step up to cheytac.

.416 Barrett.👍
Title: Re: Throating for the 300’s
Post by: jasnt on May 29, 2019, 08:09:22 PM
I may have enough capacity now for retumbo. With h1000 I’m no longer getting compressed before preasure.  May pick up an lb and see how it does

Retumbo is a bit slower, but it's so darn bulky and takes up so much space I'm not sure if you could even get enough in the case to outrun your H1000 load. 

It's unfortunate Viht N570 is nearly impossible to get because I'd bet N570 would give you another 100 fps over H1000.
i really just need to step up to cheytac.

.416 Barrett.👍
ive thought about the Barrett but I’m told large rifle primers have more consistent ignition than 50bmg primers.  Plus I’d need a bigger press. 
Title: Re: Throating for the 300’s
Post by: b23 on May 29, 2019, 08:54:31 PM
I may have enough capacity now for retumbo. With h1000 I’m no longer getting compressed before preasure.  May pick up an lb and see how it does

Retumbo is a bit slower, but it's so darn bulky and takes up so much space I'm not sure if you could even get enough in the case to outrun your H1000 load. 

It's unfortunate Viht N570 is nearly impossible to get because I'd bet N570 would give you another 100 fps over H1000.
i really just need to step up to cheytac.

.416 Barrett.👍
ive thought about the Barrett but I’m told large rifle primers have more consistent ignition than 50bmg primers.  Plus I’d need a bigger press.

You get into those cartridges, and the press will be the cheapest part. lol
Title: Re: Throating for the 300’s
Post by: jasnt on May 29, 2019, 09:14:19 PM
I may have enough capacity now for retumbo. With h1000 I’m no longer getting compressed before preasure.  May pick up an lb and see how it does

Retumbo is a bit slower, but it's so darn bulky and takes up so much space I'm not sure if you could even get enough in the case to outrun your H1000 load. 

It's unfortunate Viht N570 is nearly impossible to get because I'd bet N570 would give you another 100 fps over H1000.
i really just need to step up to cheytac.

.416 Barrett.👍
ive thought about the Barrett but I’m told large rifle primers have more consistent ignition than 50bmg primers.  Plus I’d need a bigger press.

You get into those cartridges, and the press will be the cheapest part. lol
thats true.  Just one more thing on the list I suppose, even the cheytac would be a pain on the rock chucker which I think is around 4.25” clearance maybe a bit more I don’t remember.  It’s an expensive game but I’m hopelessly addicted. 
Title: Re: Throating for the 300’s
Post by: jasnt on June 01, 2019, 05:32:40 PM
Same load but Norma brass. 
Title: Re: Throating for the 300’s
Post by: yorketransport on June 01, 2019, 06:52:02 PM
That'll work! I had 338 Edge for a while that only shot 2840 fps with a 300gr OTM from a 30" barrel with max loads. It shot great but that sucker was SLOW! You're in the same ball park with a lot less powder.
Title: Re: Throating for the 300’s
Post by: jasnt on June 01, 2019, 07:42:12 PM
That'll work! I had 338 Edge for a while that only shot 2840 fps with a 300gr OTM from a 30" barrel with max loads. It shot great but that sucker was SLOW! You're in the same ball park with a lot less powder.
now if I can just get that sizing issue taken care of I’ll be golden.   For those that don’t know my shoulder is pushed forward .025” and my shoulder bump die can’t resize the case that last .025”.   Time for custom dies or new brass.
Sure hope my next barrel is at least almost as fast as this McGowen
Title: Re: Throating for the 300’s
Post by: Jason on June 01, 2019, 08:32:07 PM
That'll work! I had 338 Edge for a while that only shot 2840 fps with a 300gr OTM from a 30" barrel with max loads. It shot great but that sucker was SLOW! You're in the same ball park with a lot less powder.
now if I can just get that sizing issue taken care of I’ll be golden.   For those that don’t know my shoulder is pushed forward .025” and my shoulder bump die can’t resize the case that last .025”.   Time for custom dies or new brass.
Sure hope my next barrel is at least almost as fast as this McGowen
What are using for dies for this setup?
Title: Re: Throating for the 300’s
Post by: yorketransport on June 01, 2019, 09:03:09 PM
That'll work! I had 338 Edge for a while that only shot 2840 fps with a 300gr OTM from a 30" barrel with max loads. It shot great but that sucker was SLOW! You're in the same ball park with a lot less powder.
now if I can just get that sizing issue taken care of I’ll be golden.   For those that don’t know my shoulder is pushed forward .025” and my shoulder bump die can’t resize the case that last .025”.   Time for custom dies or new brass.
Sure hope my next barrel is at least almost as fast as this McGowen

Here's a thought, pick up a cheap 375 Ruger die and have somebody throw it on a lathe and run a boring bar in there to open it up to an ID of .533" to a depth of 2.500". Then you'd end up with a die that functions like a carbide handgun die where there's just a small ring at the mouth of the die which is doing the sizing. It would only cost you a couple bucks for the die and an hour of machine time to bore it out. It would be slow going since the die is hardened, but it's very doable.
Title: Re: Throating for the 300’s
Post by: yorketransport on June 01, 2019, 09:06:43 PM
That'll work! I had 338 Edge for a while that only shot 2840 fps with a 300gr OTM from a 30" barrel with max loads. It shot great but that sucker was SLOW! You're in the same ball park with a lot less powder.
now if I can just get that sizing issue taken care of I’ll be golden.   For those that don’t know my shoulder is pushed forward .025” and my shoulder bump die can’t resize the case that last .025”.   Time for custom dies or new brass.
Sure hope my next barrel is at least almost as fast as this McGowen
What are using for dies for this setup?

Normally the 338/375 Ruger can get sized with a 338 RCM die for the neck and shoulder and then a 375 Ruger die to body size when necessary. Since Jasent had to get all fancy with his 338/375 Long  :chuckle:, the body length is too long for a 375 Ruger die to size the web on the case.
Title: Re: Throating for the 300’s
Post by: jasnt on June 02, 2019, 06:08:30 AM
Yes I’m using the 338 RCM and 375 ruger fl with expander removed.
Title: Re: Throating for the 300’s
Post by: Jason on June 02, 2019, 07:08:15 AM
Yes I’m using the 338 RCM and 375 ruger fl with expander removed.
I kinda remember jasnt saying he ran the reamer a little deeper, I would call CH4D and get a set made to your specs.
On another note, I have just about everything back for my build minus a longer rear action screw and scope. I will start a thread showing the build process soon.
Title: Re: Throating for the 300’s
Post by: jasnt on June 05, 2019, 04:19:26 PM
I’m considering renting an edge reamer and ordering brass and dies.  I originally went with 338/375 cause I wanted a repeater but since I’ve been single feeding anyway I may as well take advantage of this fast barrel while it’s still holding consistent speed.   :dunno: or just order a new barrel and shoot this one till it’s finished.
Title: Re: Throating for the 300’s
Post by: Jason on June 05, 2019, 05:44:55 PM
Your getting 2800 FPS from a 30 inch barrel with your current setup and York’s said he was getting 2840 FPS from a 30 inch barrel with his 338 Edge. Doesn’t seem like you’ll gain much for a lot more powder dump  :dunno:
Title: Re: Throating for the 300’s
Post by: jasnt on June 05, 2019, 06:35:57 PM
Your getting 2800 FPS from a 30 inch barrel with your current setup and York’s said he was getting 2840 FPS from a 30 inch barrel with his 338 Edge. Doesn’t seem like you’ll gain much for a lot more powder dump  :dunno:
if I order a new barrel I’ll go 32”.  This barrel is fast and with more capacity I think I might hit 2950-3000.  Who knows how the new barrel might do but I will be going .338 edge on my next barrel anyway.  With my current setup 2200 yards is my max and that’s holding over as well as maxing out the dial.  New scope is on the list but my next goal is 2500-3k yards.
Title: Re: Throating for the 300’s
Post by: Jason on June 05, 2019, 06:39:15 PM
Your getting 2800 FPS from a 30 inch barrel with your current setup and York’s said he was getting 2840 FPS from a 30 inch barrel with his 338 Edge. Doesn’t seem like you’ll gain much for a lot more powder dump  :dunno:
if I order a new barrel I’ll go 32”.  This barrel is fast and with more capacity I think I might hit 2950-3000.  Who knows how the new barrel might do but I will be going .338 edge on my next barrel anyway.  With my current setup 2200 yards is my max and that’s holding over as well as maxing out the dial.  New scope is on the list but my next goal is 2500-3k yards.
The sky is the limit man  :tup:

What’s your current scope setup and what are thinking about getting? I’m currently looking at scopes for my build. So many flavors out there.
Title: Re: Throating for the 300’s
Post by: jasnt on June 05, 2019, 06:50:40 PM
Got a few I’m looking at.  Wanting at least a 100 min and decent glass.  99% of my shooting is done at 20x so I’m thinking a fixed power for this rifle.        Some day I’ll be shooting the moon :chuckle:   I got crown taste’s on a steel reserve budget but I still get it done. 
Title: Re: Throating for the 300’s
Post by: b23 on June 06, 2019, 04:59:45 PM
I’m considering renting an edge reamer and ordering brass and dies.   or just order a new barrel and shoot this one till it’s finished.

What you've got going on with your current setup seems to be working pretty well for you, so if it were me, I'd leave it be till it's toast, then chamber the new barrel to 338 Edge.  Maybe give some thought to having Shawn w/Defensive Edge do his +P throat on it.  Shawn is getting over 3000fps w/300gr Bergers from 30in tubes in his 338 Edge +P setups.
Title: Re: Throating for the 300’s
Post by: jasnt on June 06, 2019, 06:46:54 PM
I’m considering renting an edge reamer and ordering brass and dies.   or just order a new barrel and shoot this one till it’s finished.

What you've got going on with your current setup seems to be working pretty well for you, so if it were me, I'd leave it be till it's toast, then chamber the new barrel to 338 Edge.  Maybe give some thought to having Shawn w/Defensive Edge do his +P throat on it.  Shawn is getting over 3000fps w/300gr Bergers from 30in tubes in his 338 Edge +P setups.
It is working well and I’m happy with this rifle! It has become like my 243, point and click and the bullet hits where I want.
It’s my goals that are pushing me to change.  With this setup at 2500-3k I’m looking at 4.5-6.5 sec tof and over 400ft above line of sight.  That’s a long time for those unknown winds to push the bullet around.   At 3000fps and 3k yards I’d be half sec faster and 100’ shorter ark.   It all adds up.  At the rate I’m going I think I’ll order the barrel and round up dies and brass and by the time the barrel is finished this one will be toast or close to it
Title: Re: Throating for the 300’s
Post by: yorketransport on June 06, 2019, 08:23:23 PM
I hate to say it, but it's time to think 375. Even the 338 CT is starting to drop off past 2500 yards with the 300gr OTM. You might consider trying the 375xc and build it on a Savage action. If you picked up one of the single shot 112 Magnums in 338 Lapua you could sell the factory barrel for $200 and only be into the stocked action for about $900. Then just have a 375xc barrel chambered up and you're good to go. The brass and dies would set you back a decent chunk of change but they're very high quality. The 350gr SMK is about the same price the 300gr OTM and there are a ton of good solid copper options in 375.
Title: Re: Throating for the 300’s
Post by: jasnt on June 07, 2019, 10:20:05 AM
I hate to say it, but it's time to think 375. Even the 338 CT is starting to drop off past 2500 yards with the 300gr OTM. You might consider trying the 375xc and build it on a Savage action. If you picked up one of the single shot 112 Magnums in 338 Lapua you could sell the factory barrel for $200 and only be into the stocked action for about $900. Then just have a 375xc barrel chambered up and you're good to go. The brass and dies would set you back a decent chunk of change but they're very high quality. The 350gr SMK is about the same price the 300gr OTM and there are a ton of good solid copper options in 375.
i would think by the time I got a decent stock and trigger on it I’d be about same as cheytac. 
Title: Re: Throating for the 300’s
Post by: jasnt on June 13, 2019, 06:43:01 PM
The more I look in to the 37XC the more I like it.
Title: Re: Throating for the 300’s
Post by: yorketransport on June 13, 2019, 08:12:15 PM
It really doesn't give up much velocity to the CT case. The brass and dies are about the same cost as CT brass too. You have a lot of great choices for actions and stocks since it uses a Lapua sized action. Just pick up any of the actions that are compatible with a Rem 700 LA stock and you have a ton of great stock choices.

Title: Re: Throating for the 300’s
Post by: Jason on June 20, 2019, 06:55:29 AM
I ended up buying a set of dies from CH4D for my 338-375 Ruger. $162 shipped. I would have been half the cost anyways after buying two die sets to make it work. Ordered on Monday and at my door yesterday.
Title: Re: Throating for the 300’s
Post by: jasnt on June 20, 2019, 07:50:32 AM
I ended up buying a set of dies from CH4D for my 338-375 Ruger. $162 shipped. I would have been half the cost anyways after buying two die sets to make it work. Ordered on Monday and at my door yesterday.
interested how those work for you
Title: Re: Throating for the 300’s
Post by: yorketransport on June 20, 2019, 08:03:56 PM
CH4D makes some great dies and the price is pretty good for custom/semi custom dies. I have sets for the 6.5 Badger and 375 BME and I know Biggerhammer uses them for a couple of his wildcats.
Title: Re: Throating for the 300’s
Post by: Jason on June 20, 2019, 08:49:41 PM
CH4D makes some great dies and the price is pretty good for custom/semi custom dies. I have sets for the 6.5 Badger and 375 BME and I know Biggerhammer uses them for a couple of his wildcats.
Biggerhammer actually had a post on here where he posted a picture of a reamer that had CH4D name on it. At that point I remembered that they made custom dies and reamers. Sent an email to them and Beth responded the next day and said they have them in stock.
Title: Re: Throating for the 300’s
Post by: jasnt on July 04, 2019, 09:06:00 PM
Finally got my sizing issue figured out.  This Norma brass is awesome
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