Efficiency is what I like. Short, fat powder columns and sharp shoulders help. Can anyone comment on carts in the 6.5-30 cal range on WSSM's with Ackley 40 shoulders? Will such a combo feed acceptably? Seems like this would be a good balance for a 20-22 inch BBL with more or less 06 level performance in a shorter bbl. Should have a very consistant burn for uniformity. I think an A-bolt in super short in 30 WSSM with a medium heavy 21 inch Bbl would be perfect for tight stands and brushy area carry. Does anyone have any experience with larger bore WSSM's?

I am currently thinking about a project, building a 6.5 on a 300WSM case and 26 inch custom barrel. I think it would be better than the 300 Win mag case for all practical purposes and perhaps a bit more accurate also.

Excluding the belt, sounds a bit like the old 6.5 Rem Mag, 2Bits!

Can't blame you for the choice - I've got a thing for the 6.5's, also. Think the .264 WM would fit right in with today's Short and Ultra mags.

I can't beleive that they would feed as well as one of the longer cases that give the same velocity at the same pressure. I think that the WSSM is a good idea gone to far. If you want to take it to the max get someone to neck down a 20 MM cannon shell to 25-30 cal in a 1" cartridge. I don't beleive that it would work in anything except a single shot rifle.

I feel that cartridges are just like engines. It takes Cubic inches to get more not just gimics.

I like the idea of a 6.5mm WSSM, not to be confused with the 6.5 WSM. Winchester alleges that the .25 WSSM, an interesting cartridge in and of itself, will match the 25-06. Sorry to further hijack the post with more 6.5mm ramblings.

I don't have any experience with the larger bore WSSM's, but if the performance carries over..it could be interesting. In practical terms, and I realize that wildcatting has nothing to do with that, it seems the 30x284 would do all of it and more on a standard short action. For tight stands and brushy areas I see the benefits further diminished. But wildcatting is about having what you want, not what you need. Keep us posted if you decide to go forward with the project, it's always interesting to see what folks come up with.

I would really like to see what a 6.5WSSM could do, bullets intruding on power space and all...be ****ed.

I was thinking along the lines of a 7mm or 30cal WSSM with the possibility of chambering in an AR-15. I have a 50 Beowolf, and the WSSM dimensions appear to be close enough to work in a single stack magazine situation. Power level of .308 to 30-06 range from the small frame AR might be interesting. I have heard talk that Olympic Arms is working on such a project.

I am currently thinking about a project, building a 6.5 on a 300WSM case and 26 inch custom barrel. I think it would be better than the 300 Win mag case for all practical purposes and perhaps a bit more accurate also.
I think this would be a great long distance dialer. I agree that 26 inches of barrel would be needed to squeeze all of the velocity potential out of this round. I saw an article in one of the major gun magazines about 6 months ago about a 6.5-300WSM chambered in an AR-10 with a 26 inch barrel.
The preformance was impressive with accuracy in the 1/2 minute range with heavy Sierras.

Efficiency is what I like. Short, fat powder columns and sharp shoulders help. Can anyone comment on carts in the 6.5-30 cal range on WSSM's with Ackley 40 shoulders? Will such a combo feed acceptably? Seems like this would be a good balance for a 20-22 inch BBL with more or less 06 level performance in a shorter bbl. Should have a very consistant burn for uniformity. I think an A-bolt in super short in 30 WSSM with a medium heavy 21 inch Bbl would be perfect for tight stands and brushy area carry. Does anyone have any experience with larger bore WSSM's?


Maybe this is something you would like instead?

THE 375/356 ULTRA IMPROVED!

This is a FUN article.

http://www.leverguns.com/articles/paco/375-356.htm

GOOD LUCK! :)

Looks like a 6.5-25wssm gives one a short-fat 6.5 swede; the 458-25wssm gives one a short-fat 450 marlin.

www.gmdr.com/levern/65-25wssmEtc.jpg

and

www.gmdr.com/levern/458-25wssmEtc.jpg

do shoot straight,
greg
www.gmdr.com

Looks like a 6.5-25wssm gives one a short-fat 6.5 swede; the 458-25wssm gives one a short-fat 450 marlin.

www.gmdr.com/levern/65-25wssmEtc.jpg

and

www.gmdr.com/levern/458-25wssmEtc.jpg

do shoot straight,
greg
www.gmdr.com

Do you have any more drawings like the .270WSM and the 300WSM?

I think those cases are very much alike in amount of water they will holf.

I am having a hard time figuring out why the 300WSM according to the Nosler manual, drives a 150 grain bullet much faster than the 270WSM caliber. Anybody got any ideas or is it a fact that the manual is WRONG!!! Perhaps one is a bigger diameter bullet making it go faster at first?

Do you have any more drawings like the .270WSM and the 300WSM?

I think those cases are very much alike in amount of water they will holf.

I am having a hard time figuring out why the 300WSM according to the Nosler manual, drives a 150 grain bullet much faster than the 270WSM caliber. Anybody got any ideas or is it a fact that the manual is WRONG!!! Perhaps one is a bigger diameter bullet making it go faster at first?


For a .270 the 150 gr bullet is a heavy bullet. For the .300 it is a light bullet. To compare apples to apples (or at least come closer) choose the bullets of different calibers with the same or very close Sectional Density.

As far as your 6.5 project I think the 7 WSM has a longer body to preclude it chambering in the .270 WSM rifle. Longer body should equal more powder. I know the first guys that I read of doing .338 WSM were using the 7mm case. Sean