A less than 5p 6.5mm magnum rifle.

https://www.thefirearmblog.com...-backcountry-rifles/

Is that caliber .473 ?

quote:

Originally posted by ar corey:
Is that caliber .473 ?

Yep, look at the last line:

6.5 WEATHERBY RPM (6.5 WBY RPM) CARTRIDGE

When you think about a Weatherby cartridge, you probably depict a large magnum round with a belted case and company’s signature double-radius Venturi shoulder. The new 6.5 WBY RPM is a departure from the traditional Weatherby case design. It has a rebated rim, no belt, and a standard pattern 35-degree shoulder. The cartridge is based on a lengthened .284 Winchester case and has the same rim geometry with a .500 base and the rim rebated to .473 diameter.

Is it an improvement over my 40 year old Mark V in 270 Weatherby?

It is if you are tired of carrying 10 pounds of rifle. Is the cartridge better? Nothing is better than the .270 Weatherby.

except a 28 weatherby.

the rpm actually kind of makes sense, except for the proprietary case.
why they didn't just add a belt to the 6.5-06, or neck up their 257 case, and move on is beyond me.

quote:

Originally posted by Lamar:
except a 28 weatherby.

the rpm actually kind of makes sense, except for the proprietary case.
why they didn't just add a belt to the 6.5-06, or neck up their 257 case, and move on is beyond me.

Bigger case than 30/06.

The Wby/284 is .5 on the base and the belted cases are .512 in front of the belt. At 2.5" length I reclon the Wby/284 case capacity would be abot the same as a WSM case, that is a tad smaller than the 7mm Rem, 338 Winchester etc.

As a side note the 240 Wby is not based on a belted 30/06. The 240's rim and belt diamter is .470 so a bit less than 30/06, 270 etc. in front of the belt. However, it is very close to 6mm/06 case capaity because more parallel case and Wby brass is thin in the walls.

part of that was tongue in cheek.
mostly because they went out of their way to reproduce the 264 win mag which has a belt.

the weatherby rounds being famous for their belted cases.
then they jump the wagon to basically copy a belted round,,,, only without a belt, it just makes me chuckle.

Well Weatherby is now being run by the third generation (grandsons of Roy) so they have different ideas in order to appeal to younger buyers. Beltless cartridges are in right now so I can see the reasoning.

For me I would have thought that just adding a 6.5 to their existing family of short cartridges, that being the .257, 270, 7mm would have made the most sense but instead they came out with the 6.5/300 first and now the RPM along with a redesigned Mark V to house it.

But what buyers are into at any given moment will always determine what manufacturers come out with plain and simple. It will be interesting to see how it sells.

I know most folks climbing hills count oz.
I acquired s 270WM in their Mark V featherweight rifle years ago. I think it is a bit over 6 lbs.
Has a 26" very thin barrel. It is a very finicky rifle but will shoot a 130 TTSX or q 129 LRX bullet at 3450 FPS into a dime at 100 yrs.
I probably will not shoot at anything over 400 yds.
In my case I do not see a great advantage for this new gun over some historical offerings. A the weight it is not heavy enough for stability in LR shooting. Just keep a scope at less than 16 oz. A shame to put a +25 oz scope on a purpose built rifle.
The light Kimber offerings in the 270WSM filed this niche very well.
Jumping on the recent 6.5 band wagon / craze.

EZ

quote:

Originally posted by Cougarz:
Well Weatherby is now being run by the third generation (grandsons of Roy) so they have different ideas in order to appeal to younger buyers. Beltless cartridges are in right now so I can see the reasoning.

For me I would have thought that just adding a 6.5 to their existing family of short cartridges, that being the .257, 270, 7mm would have made the most sense but instead they came out with the 6.5/300 first and now the RPM along with a redesigned Mark V to house it.

But what buyers are into at any given moment will always determine what manufacturers come out with plain and simple. It will be interesting to see how it sells.

There is a reason new cartridges don't have belts, and it isn't just to appeal to the latest fad.

What was the last belted cartridge to come out that achieved any popularity? I would guess the .416 Rem Mag - and when was that? Around 1988?

quote:

Originally posted by AnotherAZWriter:

quote:

Originally posted by Cougarz:
Well Weatherby is now being run by the third generation (grandsons of Roy) so they have different ideas in order to appeal to younger buyers. Beltless cartridges are in right now so I can see the reasoning.

For me I would have thought that just adding a 6.5 to their existing family of short cartridges, that being the .257, 270, 7mm would have made the most sense but instead they came out with the 6.5/300 first and now the RPM along with a redesigned Mark V to house it.

But what buyers are into at any given moment will always determine what manufacturers come out with plain and simple. It will be interesting to see how it sells.

There is a reason new cartridges don't have belts, and it isn't just to appeal to the latest fad.

What was the last belted cartridge to come out that achieved any popularity? I would guess the .416 Rem Mag - and when was that? Around 1988?

Oh sure the belt often isn't really needed but it doesn't hurt anything either. Since most magnum cartridges at the time where based off of the ever usefull .375H&H case it wasn't "added" like many beltless folks seem like to say.

But none of the current offerings have made the existing belted cartridges less popular either.

quote:

Originally posted by AnotherAZWriter:
There is a reason new cartridges don't have belts, and it isn't just to appeal to the latest fad.

What was the last belted cartridge to come out that achieved any popularity? I would guess the .416 Rem Mag - and when was that? Around 1988?

Not popular in general (or is the 416 Remington) but in the line up, the 30/378 Wby. A big winner for Weatherby.

How do the dimensions of this case compare with the Ruger 375/416 case?

It's all about the rifle. From 4.9 lb. titanium to 5.5lb Backcountry with a 6 lug bolt. So if they made a 270 Weatherby in 6.5 it would be another 264 that requires the 9 lug action and more weight. So we have a new cartridge equivalent of a 264 in a small action with very low weight.

quote:

Originally posted by AnotherAZWriter:

What was the last belted cartridge to come out that achieved any popularity? I would guess the .416 Rem Mag - and when was that? Around 1988?

10.3x68 RWS is the newest belted magnum. It fulfills the Swiss canton requirement of a .400 diameter bullet. The 10.3 is a common bullet size in Switzerland because of the 10.3x60R hunting cartridge. Many old Swiss hunters use this cartridge in Martini single shots that are over 100 years old. Though Krieghoff, Blaser, Heym, Sauer and others still make rifles in this caliber for the Swiss market.

A friend of mine is a booking agent in Switzerland and owns a gunshop. He developed his own 10.3x284 Winchester caliber to meet this requirement. I think it is called the 10.3 Capra.

I would say the 6.5-300 WBY is the 2nd newest, followed by the 400 H&H.

looks like a 9.3x64mm necked down to 6.5mm and the rim diameter reduced by .020" plus a few other dimensional tweaks.