Post by: Bob33 on September 03, 2019, 10:03:30 AM
“We set out to produce the best backcountry rifle and cartridge combination ever, it was a project we did not take lightly. At our core, we pride ourselves in ballistic superiority. So, the goal was not to simply achieve the production of a 5 pound rifle. Instead, our team was able to break the 5 pound mark while delivering magnum performance in a firearm that doesn’t demand custom rifle pricing. Additionally, the combination of the stock design, brand new muzzle brake and proprietary patent-pending 3D HEX recoil reducer make it enjoyable to shoot. After years of innovation and development, the Mark V® Backcountry Ti and 6.5 WBY RPM combination achieve the weight savings, ballistic performance and price that cannot be found in a production rifle anywhere else.” says Adam Weatherby.
Weatherby has been known for ballistic superiority, touting many of the fastest cartridges available by caliber, as well as the strongest rifle action available with the Mark V Magnum 9 lug action. The new 6.5 Weatherby RPM (Rebated Precision Magnum) has been purpose built for the smaller Mark V 6 lug action. This 15th cartridge introduction is unique compared to Weatherby’s 14 preceding cartridges because it is a non-belted, non-venturi shoulder case with a rebated rim. Out of the gate Weatherby will be shipping 3 offerings in 6.5 WBY RPM.
https://www.ammoland.com/2019/09/weatherby-introduces-new-mark-v-backcountry-rifles-and-new-6-5-wby-rpm-cartridge/#axzz5yTvyQUlo
Post by: theleo on September 03, 2019, 10:26:55 AM
Post by: b23 on September 03, 2019, 10:57:49 AM
The velocities they are showing are pretty much inline or very similar to what the 6.5-284 does so I'm not sure I see a whole lot of advantage of this new 6.5 Wby RPM over a 6.5-284 and with the 6.5-284 we have the advantage of using Lapua brass, which we all know has durability second to none.
Now, if Weatherby would have stretched this new case out to have a capacity somewhere in the high 70's or even low 80's, then I could see it carving out a niche market all of it's own, but something like that would probably have taken to much away from their, already teenie tiny, 6.5-300 Wby market share.
Post by: nwwanderer on September 03, 2019, 11:01:44 AM
Post by: 257wbymagkiller on September 03, 2019, 12:04:26 PM
Post by: Bob33 on September 03, 2019, 12:08:32 PM
Beat me to this post. I was surprised I didn’t see a double rolled shoulder I had to double take to make sure I was seeing the picture correct. I don’t see it catching on to much but I’d love to get my hands on one and get behind it for a day and see what it’s like. I don’t think it would push out my .257 wby though.If so you would have to create a new account 65wbyrpmkiller.
Post by: carpsniperg2 on September 03, 2019, 12:31:01 PM
Post by: Karl Blanchard on September 03, 2019, 12:42:41 PM
Post by: Magnum_Willys on September 03, 2019, 01:42:04 PM
Post by: Jonathan_S on September 03, 2019, 02:13:46 PM
Finally someone designed a .264 that can push a 140gr bullet at 3,000fps! Oh wait...... :chuckle:
Sign me up!!!!
Post by: BULLBLASTER on September 03, 2019, 02:34:36 PM
It’s truely revolutionary!Finally someone designed a .264 that can push a 140gr bullet at 3,000fps! Oh wait...... :chuckle:
Sign me up!!!!
Post by: yorketransport on September 05, 2019, 06:29:15 AM
I’m going to get my hands on a couple pieces of brass when it’s available to figure what the case capacity is. If you stretched the 284 case by .200” you should end up with a bit more velocity than Weatherby is showing and still be able to take full advantage of a 3.400” action length.
Post by: JJB11B on September 05, 2019, 06:41:36 AM
I actually really like the idea. In fact, I drew up a design for a lengthened 284 Win case a few years ago and and considered trying to have brass made.does it have any real advantages over 6.5 PRC, 6.5-284, 26 Nosler? honestly it seems very Marginal looking at the chart in the article. I thought weatherby generally gets its velocity by backing the bullets way off the lands, at least that's what I have heard from a lot of people
I’m going to get my hands on a couple pieces of brass when it’s available to figure what the case capacity is. If you stretched the 284 case by .200” you should end up with a bit more velocity than Weatherby is showing and still be able to take full advantage of a 3.400” action length.
Post by: syoungs on September 05, 2019, 06:52:44 AM
Post by: yorketransport on September 05, 2019, 10:08:21 PM
I actually really like the idea. In fact, I drew up a design for a lengthened 284 Win case a few years ago and and considered trying to have brass made.does it have any real advantages over 6.5 PRC, 6.5-284, 26 Nosler? honestly it seems very Marginal looking at the chart in the article. I thought weatherby generally gets its velocity by backing the bullets way off the lands, at least that's what I have heard from a lot of people
I’m going to get my hands on a couple pieces of brass when it’s available to figure what the case capacity is. If you stretched the 284 case by .200” you should end up with a bit more velocity than Weatherby is showing and still be able to take full advantage of a 3.400” action length.
That’s why I want to get my hands on a piece of brass. The performance numbers that Weatherby is throwing out don’t match up with what I’d expect from a lengthened 284 case. I’d expect close to 100 fps more than what Weatherby is getting.
Post by: b23 on September 05, 2019, 11:48:22 PM
I actually really like the idea. In fact, I drew up a design for a lengthened 284 Win case a few years ago and and considered trying to have brass made.does it have any real advantages over 6.5 PRC, 6.5-284, 26 Nosler? honestly it seems very Marginal looking at the chart in the article. I thought weatherby generally gets its velocity by backing the bullets way off the lands, at least that's what I have heard from a lot of people
I’m going to get my hands on a couple pieces of brass when it’s available to figure what the case capacity is. If you stretched the 284 case by .200” you should end up with a bit more velocity than Weatherby is showing and still be able to take full advantage of a 3.400” action length.
That’s why I want to get my hands on a piece of brass. The performance numbers that Weatherby is throwing out don’t match up with what I’d expect from a lengthened 284 case. I’d expect close to 100 fps more than what Weatherby is getting.
I was curious about case capacity and how long the case is of this new cartridge and called Weatherby multiple times earlier this week and every time I called all I got was their Techs voice mail. I left a message but have yet to receive a call back from them. If I remember, I'll try again tomorrow and see if I can find out more specifics of this new cartridge.
Post by: b23 on September 06, 2019, 10:10:43 AM
New 6.5 Wby RPM Case capacity 81gr H20
According to the CS person that called me back, this is approximately the case capacity. Not really sure why she said it like that but she told me she was just repeating what the Tech told her. Not sure if this is a projected number or if it's actually a measured number and they're calling it approximate because of variance from case to case.
Case length 2.570 (that's longer than a 06 case)
If that case capacity is correct, this would be slightly larger than a 6.5 WSM. I'm a little confused as to why the velocity isn't higher though because a 6.5 WSM can sling a 140 well over 3200, even at conservative pressures.
Have to admit, I didn't think it would have this kind of case capacity and if the brass turns out to be decent stuff and will handle a little abuse, for a standard bolt face cartridge, it could actually have a lot of potential. Only time will tell.
Post by: BULLBLASTER on September 06, 2019, 01:54:16 PM
Post by: yorketransport on September 06, 2019, 09:46:09 PM
I've never really been drawn to the Weatherby rifles, but I think this makes their Backcountry a pretty attractive package.
Post by: crabcreekhunter on September 07, 2019, 04:17:18 PM
Post by: b23 on September 07, 2019, 04:28:51 PM
Post by: yorketransport on September 07, 2019, 08:56:41 PM
Seems to be trying to fill a niche that is already filled. Lots of 6.5s out there that already throwing the 140s pretty fast, 6.5 prc, 26 nosler, 6.5 saum, etc kind of partial to the 6.5-06ai myself. Either way will be a nice chambering in a nice rifle.
The 6.5 RPM is more about the whole package than just the cartridge. There aren't any other 6.5s which will give the same performance and fit within the limitations of Weatherby's 6 lug action.
I'm not really interested in the 6.5 version of the RPM, but neck it up to 338 and stick it in one of their Backcountry rifles and they'd have my attention!
Post by: coachcw on September 22, 2019, 03:00:27 PM
Post by: BULLBLASTER on September 22, 2019, 03:33:20 PM
Barrel Burner !When are you getting one? :tung:
Post by: b23 on September 22, 2019, 05:38:18 PM
Barrel Burner !
Maybe a little, but as the saying goes, barrels are threaded for a reason, so they can be easily replaced. :tup:
And in all honesty, VERY, few people actually ever burnout the throat of a barrel.
Post by: jasnt on September 22, 2019, 06:15:54 PM
and even more rare are people worried about burning up a barrel and actually doBarrel Burner !
Maybe a little, but as the saying goes, barrels are threaded for a reason, so they can be easily replaced. :tup:
And in all honesty, VERY, few people actually ever burnout the throat of a barrel.
Post by: bearpaw on March 05, 2021, 08:07:21 AM
They claim the 4.9 pound Weatherby Backcountry Ti rifle weighs only 6.1 pounds with a Leopold VX-3i mounted on it, making it the fastest and lightest 6.5 production rifle available!
https://weatherby.com/store/markv-backcountry-ti/
They provide handloading info on the 6.5 RPM
https://weatherby.com/wp-content/uploads/2020/02/6.5WBYRPM_Data.pdf
t=40s
Post by: Magnum_Willys on March 09, 2021, 05:44:26 PM
I wasn't a big fan of weatherby long freebore, but its the original ++P throating that gets velocity, keeps pressure down to what weatherby brass can handle, and has a large sweetspot for reloading. I've custom loaded for two different 338-378's that can shoot 6" groups at 1000 yds and first shot hits on milk jugs at the same. I can match or just beat em with my custom Lapua but not on the first shot. That huge freebore helps.
If Weatherby brass was as strong as Lapua - would be game over.
Post by: b23 on March 09, 2021, 11:24:01 PM
I wasn't a big fan of weatherby long freebore, but its the original ++P throating that gets velocity, keeps pressure down to what weatherby brass can handle
If you're referring to Defensive Edge's +P throat, you do know it has absolutely 100% nothing to do with freebore, right?
Post by: zwickeyman on March 10, 2021, 05:24:06 AM
Post by: Magnum_Willys on March 10, 2021, 07:45:41 AM
If you're referring to Defensive Edge's +P throat, you do know it has absolutely 100% nothing to do with freebore, right?
Long Freebore- bore rider - +p = All the same concept . Run a throater into the chamber and remove short length of part or all of the lands so bullet has less initial resistance creating a slower pressure ramp. Weatherby takes all the lands out for 3/8”, bore rider a little less, +p only half the lands removed.
Post by: b23 on March 10, 2021, 08:21:50 AM
I agree that the end goal of flattening the pressure curve is what they all are trying to achieve but it's how they go about it that is a fair bit different.
If you're referring to Defensive Edge's +P throat, you do know it has absolutely 100% nothing to do with freebore, right?
Long Freebore- bore rider - +p = All the same concept . Run a throater into the chamber and remove short length of part or all of the lands so bullet has less initial resistance creating a slower pressure ramp. Weatherby takes all the lands out for 3/8”, bore rider a little less, +p only half the lands removed.