DMK
Member
How do the 7.5 Swiss and 7.62x51 rounds compare, ballistically, velocity and pressure wise?
How do 7.5 Swiss and 7.62x51 compare?
- Thread starter DMK
- Start date
- Status
jerkface11
Member
7.5x55 has a slightly lower pressure rating. Slightly more case capacity. And nearly identical balistics. It will do anything a 7.62x51 will do.
Pretty darned close, all things considered!
Matter of fact, I load 7.5x55 for my M1911 rifle using the same powder charge (41.5gr IMR4895) and bullet (168gr Sierra HPBTM) as I do for the 7.62x51 loads in my M14NM, BM-59, and Remington 700 PSS. The Schmidt-Rubin 1911 just uses a larger case, with lower pressure and 30" barrel to get the bullet going, compared to the higher working pressure of the 7.62x51 NATO chambering. Way cool, and economical when it comes time to buy powder and bullets.
Matter of fact, I load 7.5x55 for my M1911 rifle using the same powder charge (41.5gr IMR4895) and bullet (168gr Sierra HPBTM) as I do for the 7.62x51 loads in my M14NM, BM-59, and Remington 700 PSS. The Schmidt-Rubin 1911 just uses a larger case, with lower pressure and 30" barrel to get the bullet going, compared to the higher working pressure of the 7.62x51 NATO chambering. Way cool, and economical when it comes time to buy powder and bullets.
cracked butt
Member
^what he said^
I use very close to the same loading in the 7.5 with the same bullets with 4064 as I do with the .308. The 7.5 case will hold just about as much water as a 30-06 case -a grain or two.
I use very close to the same loading in the 7.5 with the same bullets with 4064 as I do with the .308. The 7.5 case will hold just about as much water as a 30-06 case -a grain or two.
- Status
