Gulp..Gulp...more Creedmoor kool-aid down the hatch

[CaNINE]

I've had this empty feeling inside for a while and suddenly realized it's because I'm currently lacking a .243 caliber rifle in my safe. 

Now that Lapua is making 6CM head stamped brass I decided to order up a custom barrel in 6CM.  I went with a 26" Shilen Select Match Varmint profile with a 7 twist so I can shoot the heavy 115 grain VLD and DTACs.  Should make for a fun post-hunting season project.  Will mainly use this for targets with occasional longer pokes at whitetail, antelope and yotes.

Anyone have experience with this caliber shooting the 115's?

[BULLBLASTER]

I’m using 105s in my 6 bungun (creedmoor) thinking my next barrel will be a 7 ya to shoot the 115 tho. How long is the barrel you ordered?

I’m using 6.5 brass necked down since Lapua hadn’t announced the 6 brass when I got it.

[CaNINE]

I’m using 105s in my 6 bungun (creedmoor) thinking my next barrel will be a 7 ya to shoot the 115 tho. How long is the barrel you ordered?

I’m using 6.5 brass necked down since Lapua hadn’t announced the 6 brass when I got it.

I went with a 26".  I'd also like to shoot the 105's too.  Will be interesting to see what velocity I can run them at without the fast twist vaporizing them.   

I plan to use H4530, H4831SC or H1000....whatever gives the best precision with the 115's.

[bearpaw]

One of the guns I started hunting with as a kid was a 6mm Remington re-barreled with a Douglas barrel. I've killed bear, deer, and lots of varmints of all sizes with various .243 bullets. I ended up liking 100 grain bullets the best for all-around use but can see the advantages of a heavier bullet at times.

We started all our kids with a Remington Model 7 in 6mm Remington and I still loan that gun to some youth and adult hunters at times who come hunting with us. I don't know how case capacity of the 6mm compares with the 6CM, but I'm willing to bet no matter if it's a little faster or slower that the 6CM will be a very effective cartridge for small to medium game loaded with .243 bullets. 

[BULLBLASTER]

I’m using 105s in my 6 bungun (creedmoor) thinking my next barrel will be a 7 ya to shoot the 115 tho. How long is the barrel you ordered?

I’m using 6.5 brass necked down since Lapua hadn’t announced the 6 brass when I got it.

I went with a 26".  I'd also like to shoot the 105's too.  Will be interesting to see what velocity I can run them at without the fast twist vaporizing them.   

I plan to use H4530, H4831SC or H1000....whatever gives the best precision with the 115's.

Mine is a 26 inch 7.75 twist and I was able to get to 3250 at first signs of pressure with 105 bullets. Working my load to be in the 3100 range. I am using imr 4831 for powder and it is giving pretty good fill ratio at 43 grains.

[Karl Blanchard]

I’m using 105s in my 6 bungun (creedmoor) thinking my next barrel will be a 7 ya to shoot the 115 tho. How long is the barrel you ordered?

I’m using 6.5 brass necked down since Lapua hadn’t announced the 6 brass when I got it.

that's because you bought brass before you even ordered your rifle 

[BULLBLASTER]

I’m using 105s in my 6 bungun (creedmoor) thinking my next barrel will be a 7 ya to shoot the 115 tho. How long is the barrel you ordered?

I’m using 6.5 brass necked down since Lapua hadn’t announced the 6 brass when I got it.

that's because you bought brass before you even ordered your rifle 

I may have jumped the gun a bit. What can I say I know what I want. 
I have confirmed that the loaded neck diameter is the same in Lapua 6 stamped brass and necked down 6.5.

[jasnt]

I’m running a 28” 7 twist in 243.  Can run the 105’s at 3100 pretty easily but the 115’s and h1000 shoot so well I tossed the 105’s aside

[BULLBLASTER]

I’m running a 28” 7 twist in 243.  Can run the 105’s at 3100 pretty easily but the 115’s and h1000 shoot so well I tossed the 105’s aside

Where did you pressure out with the 115s?

[jasnt]

I’m running a 28” 7 twist in 243.  Can run the 105’s at 3100 pretty easily but the 115’s and h1000 shoot so well I tossed the 105’s aside

Where did you pressure out with the 115s?

ill have to look when I get home. I’m thinking it was 3000ish. 2950 just shoots so well

[CaNINE]

I’m running a 28” 7 twist in 243.  Can run the 105’s at 3100 pretty easily but the 115’s and h1000 shoot so well I tossed the 105’s aside

Where did you pressure out with the 115s?

ill have to look when I get home. I’m thinking it was 3000ish. 2950 just shoots so well

Thanks exactly the info I’m looking for.  Glad to hear you found a great load with the 115 and H1000.  I’ll start my development with that combo.

[BULLBLASTER]

I went to the range today  and shot some 105s. This is with 43 grains of imr 4831 and different seating depths. Speed is 3090. Was hoping to be a bit better but may need a different powder to tighten it up a ton. Next time out I’ll play with some different charges.

Sorry if I’m threadjacking.

[CaNINE]

Good stuff keep it coming...As far as I’m concerned thread jacking is not a thing.

[jasnt]

According to my notes I got 3010 with the 105’s and never hit preasure with 40gr h4350

[BULLBLASTER]

According to my notes I got 3010 with the 105’s and never hit preasure with 40gr h4350

I’d think with a 28 inch tube you could get much more than that with he 105

[jasnt]

Yes I’m sure I can.  Not worried about speed tho

[Mtnwalker]

Guess this is a good thread to ask this question, I have a 243 wssm sitting in my safe that I was considering re barreling with a faster twist and longer barrel to shoot some of the heavier stuff, is this a dumb idea? I have a ton of brass for it and it seems like components are becoming a lot more available lately than they were in the past

[jasnt]

Great idea since you have the brass.  Would definitely recommend the 1:7

[Biggerhammer]

The 105gr Nosler 6mm RDF is a wicked bullet in the 6CM chambering, hell on Antelope!

Super accurate. I first played with the chambering in a factory Ruger Predator. The factory Hornady ammo shot extremely well. While the Predators are far from classy, completely utilitarian. I have spent a whole lot more than $379.00 for customs to shoot 1/2 moa or close with hand loads.

These are the first 3 shot and 5 shot groups out of a stock Ruger Predator 6CM with factory ammo.