6.5 Wby RPM

I guess the double radius shoulder was not good enough, have to look more up on it the fps does not look very impressive.

https://weatherby.com/ammunition/6-5-wby-rpm/

It's a lengthened 6.5x284 with a 35 deg shoulder. Doesn't seem to gain much if any velocity over a 6.5 PRC. Maybe it's just the pictures, but the case looks kind of long, even for a long action, I wonder how it will work with really long, heavy bullets?

140 grs at just over 3,000 fps won't really do anything that a 7mm Mag or even a 270 Win won't do, but the new rifle it's chambered in, at 4.9 lbs, makes for a very nice combo.

Not really my sort of thing, but for sheep fanatics, it sounds pretty much ideal, for example.

Look at the price tho can buy 2 kimbers and be lighter. Looks nice tho. But 3075 does not impress me, there are guys with 6.5-284's getting that fps. I get more then that from my 7x57AI. Hope the round works out for them.

I’m a Weatherby fan but don’t see the need for this cartridge.

Wby doesn't have their own version of the "standard", which basically the 6.5-284, PRC, and a couple wildcats are, or a short like the .260 or creedmoor. So i guess it makes sense sorta.

I'm having trouble breaking 3k with my 24" PRC with 147s, tho I expect to do so, and Im running hot to break 3k with my 24" 6.5-284 and 140/143s.
The wby round should be enough punchier to warrant a look at least, tho I honestly only expect it to appeal to a wby fan, or someone who wants to be extra different.....cause let's face it, nothing's odder than a lengthened .284 case (I might just have to build one now.....)

Get ready for expensive brass. I'm also not a fan of light rifles.
My grandfather carried a Rem 788 while elk hunting well into his 70's.

Bfh_auto said:

I'm also not a fan of light rifles.

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I’m with you. There’s no way I’ll shoot a 140 grain bullet at around 3,000 FPS in a sub 7lb rifle.

cdb1 said:

I’m with you. There’s no way I’ll shoot a 140 grain bullet at around 3,000 FPS in a sub 7lb rifle.

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It depends on what you want to do with it, if you want to put a nice scope and a supressor on it, even the 4.9 lb Backcountry Ti would be ~7 lb full up and ready to hunt. I'm not a fan of recoil, but you're talking about recoil very similar to .270 Winny with bullets that have have a bit more SD and BC, not a bad price to pay in a lightweight easy to carry package.

I have a Kimber Montana set up just like I referenced above, and at 7.1 lb ready to hunt it's a joy to hike around with all day. I can carry my X-Bolt that, similarly dressed, weighs 8.5 lb, anywhere I need to go, but I'm not going to pretend that I don't prefer toting the Kimber. The unbalanced nature of a slung rifle makes me notice small changes in weight much more over the course of a few days hiking than similar weight fluctuations in a backpack. All of that said, I agree with one of the posters above in that I personally would never buy one of these when I could get 3 Kimber Montana's at the same price (or even 5 Kimber Hunters). I don't think NULAs are really any more expensive than this Backcountry Ti.

As for the chambering, I could be interested depending on how it handles heavier/longer bullets in a standard long action. I read somewhere that they aren't chambering this cartridge with super long weatherby throats, so that is a good sign. A beefed up 6.5x284 with rifles and brass available isn't, on its face, unattractive. Barrel life might crest 1,000 rds.

If the 6.5 RPM is published as a SAAMI standard, and other rifle, ammo and brass manufacturers get in on production, it could have some legs. If only Weatherby is putting out MK Vs at $3,000, ammo at $65/20 and brass at $40/20 I don't think many people will fool with it.

This does look good for the prospects of SAAMI standardization:

http://pacifictoolandgauge.com/6-mm...2--saami-65-wby-saami-rpm-chamber-reamer.html

Is that reamer the 6.5-300 or the RPM tho?
never mind, read the description better

With a suppressor yes but not without one.

cdb1 said:

With a suppressor yes but not without one.

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Yeah, the super light rifles can be a bit twitchy from field positions with a bare muzzle, it's amazing how much better they settle down with 12oz - 14oz hanging off the end though.

that looks like a sweet round.
I wonder what it could do with the 129's

that looks like a sweet round. I wonder what it could do with the 129's

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Well, it pushes a 127-grain bullet to 3225 fps so......



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its not new, it was a wildcat that was used at Williamsport pa. for long range(1000 yards) shooting starting in the 60,s. it was called the 6.5x300 WWH(wright-weatherby-hoyer) using norma 139 gr bullets and norma 202 powder. weatherby just made a factory rifle for it. it should be much better with the bullets and powders available today. MY BAD, NOT THE SAME CARTIGE.

Gtscotty said:

Yeah, the super light rifles can be a bit twitchy from field positions with a bare muzzle, it's amazing how much better they settle down with 12oz - 14oz hanging off the end though.

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Per

eastbank said:

its not new, it was a wildcat that was used at Williamsport pa. for long range(1000 yards) shooting starting in the 60,s. it was called the 6.5x300 WWH(wright-weatherby-hoyer) using norma 139 gr bullets and norma 202 powder. weatherby just made a factory rifle for it. it should be much better with the bullets and powders available today.

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originally I thought we were talking about the 6.5-300 also, which wby has legitimized. The round in question tho, is actually a completely new case, as far as I know.
I don't believe the .284s case has ever been lengthened to take full advantage of a standard length 06 dia action. bet it would be a neat round in a Kimber 84

About 20 years ago my dad made a wildcat it was a 7 rem mag with the belt removed and the rim cut to .473. The shoulder was pushed forward some and the shoulder was 35 degrees. Still a 7 mms tho, anyone find the case length of the new wby round it does look similar not dads.

your dad's round would have been about .01 larger in dia than the RPM, tho I don't know how much longer.

eastbank said:

its not new, it was a wildcat that was used at Williamsport pa. for long range(1000 yards) shooting starting in the 60,s. it was called the 6.5x300 WWH(wright-weatherby-hoyer) using norma 139 gr bullets and norma 202 powder. weatherby just made a factory rifle for it. it should be much better with the bullets and powders available today.

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The 6.5-300 Weatherby-Wright-Hoyer was a necked down 300 Weatherby wildcat from the 1960s. Weatherby standardized a version of that wildcat as the 6.5-300 Weatherby Magnum in 2016.

The 6.5 Weatherby RPM is an entirely different round, basically a lengthened 6.5x284, and was just introduced this week.

LoonWulf said:

your dad's round would have been about .01 larger in dia than the RPM, tho I don't know how much longer.

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Guys are saying it's 06 case length, but who knows at this point. Looking at it it's sticking how similar it is to my dads, have to see find still has any brass left.

If the Weatherby folks had been serious about a 6.5 they could have simply necked a .257 Wby Mag up to .264" , or a 7mm Wby Mag down, and they would have a round that looks like a Weatherby of legend, fits in a standard length action and delivers significant performance. Here's what it looks like with a 140gr A-Max bullet..

Offfhand said:

If the Weatherby folks had been serious about a 6.5 they could have simply necked a .257 Wby Mag up to .264" , or a 7mm Wby Mag down, and they would have a round that looks like a Weatherby of legend, fits in a standard length action and delivers significant performance. Here's what it looks like with a 140gr A-Max bullet..View attachment 858763

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Perhaps too close to 6.5-300 they recently legitimized? Tho how much more oomph would 6.5-7mmWby gain over the .264Win?

They weren't going for speed records, or the Weatherby look, they already had all of that in the 6.5-300 Wby, and the 26 Nosler already does the same thing in a standard length action. It seems clear they were going specifically for a more balanced cartridge that used a non-magnum case head and fit in their 6-lug action, while still giving a substantial bump in performance over popular, existing non-magnum chamberings.