6.5 Weatherby RPM cartridge

[Bob33]

Weatherby is excited to announce two new Mark V rifles the Backcountry and Backcountry Ti in combination with an all new Weatherby magnum cartridge, the 6.5 Weatherby RPM cartridge.

“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

[theleo]

There's enough Weatherby fan boys out there that I'm sure they'll sell a few, but I don't see it catching on with the hunting public at large. The brass will have to be proprietary (can't form it from anything) making it ridiculously expensive even for hand loaders. At least it doesn't have a belt or a double radiused shoulder. "Weatherby guys" will be quick to love it, the rest of us will look towards the 6.5-06ai instead.

[b23]

I'm hearing it's a stretched or long version of the 284 case but they don't say how much longer and no mention of case capacity. 

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.

[nwwanderer]

Regardless of new offerings, the move to Wyoming seems very positive.

[257wbymagkiller]

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.

[Bob33]

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.

[carpsniperg2]

Love me some weatherby but pass on this one. I run a 6.5stw with the 140 at 3200+ so won’t get any love from me.

[Karl Blanchard]

Finally someone designed a .264 that can push a 140gr bullet at 3,000fps! Oh wait......

[Magnum_Willys]

But the price is right at barely twice a Hells Canyon speed.  🤔

[Jonathan_S]

Finally someone designed a .264 that can push a 140gr bullet at 3,000fps! Oh wait......

Sign me up!!!!

[BULLBLASTER]

Finally someone designed a .264 that can push a 140gr bullet at 3,000fps! Oh wait......

Sign me up!!!!

It’s truely revolutionary!

[yorketransport]

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.

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.

[JJB11B]

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.

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.

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

[syoungs]

yeah it seems I've heard that the throats in Weatherby rifles are cut deep to help with pressure and velocity. This round doesn't seem groundbreaking to me.

[yorketransport]

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.

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.

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

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.