Why aren't short/super short magnum cartriges more popular?

[mnhntr]

Expensive factory ammo
Crappy brass
Not much gain over the regular cartridge counter part
Excessive barrel wear
and the list goes on and on.

[sinman]

hmm, I didn't know Norma brass was crappy. And excessive barrel wear? are we speculating now or have you taken 2 exactly built rifles and documented how many rounds it takes to wear out a 7mm Wsm to a 7mm rem mag or a 300 wsm to a 300 Win mag?

[mnhntr]

hmm, I didn't know Norma brass was crappy. And excessive barrel wear? are we speculating now or have you taken 2 exactly built rifles and documented how many rounds it takes to wear out a 7mm Wsm to a 7mm rem mag or a 300 wsm to a 300 Win mag?

I should have clarified I am refering to the WSSM calibers. With the 7wsm to 7mm mag or 300wsm to 300 win mag there is not as big a difference however the gain is still negligable.

[geargrinder]

I should have clarified I am refering to the WSSM calibers. With the 7wsm to 7mm mag or 300wsm to 300 win mag there is not as big a difference however the gain is still negligable.

I run the WSM's out of a long action. It lets me hang some heavy VLD's without running into mag length problems. That's a big advantage over the 7RM and 300win.

[FW Conch]

Freepistol, just curious, why is the 7RSAUM "not short enough"? Even with long bullets it should work well in a Savage short action? Thanks...Jim

[Freepistol]

Freepistol, just curious, why is the 7RSAUM "not short enough"? Even with long bullets it should work well in a Savage short action? Thanks...Jim

Jim,
It's not the magazine length. I want to make a light rifle with a 20 or maybe a 21" barrel. The guys on Specialty Pistol have been getting good velocity out of 18-20" barrels using the 7SAUM, however, I think a shorter cartridge would do the same with less powder, muzzle blast, and recoil. I've been comparing velocity and powder weights of various rounds and there are 7mm loadings that'll get 2700fps with 5-11 grains less powder than the SAUM. With a capacity about 7 grains less, I would be happy. After many hours of flipping pages back and forth, I've come to the conclusion that the 7SAUM is the way to go and just have to decide on the contour and length. I'd like to have a short, stiff barrel, but don't want a big velocity concession. I have a 6.5 Creedmoor with a Shilen 24" heavy sporter and I think cutting a couple inches off that would make a great mountain weight barrel in the 7SAUM.