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Long Range Hunting & Shooting
Is 7mm SST the perfect cartridge for me?
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<blockquote data-quote="MudRunner2005" data-source="post: 1607042" data-attributes="member: 12995"><p>The SS will have less body taper and a 40º shoulder. This means the SS will hold a little bit more powder, and the straighter walls and 40º shoulder will promote better pressurizing & pressure handling, resulting in more velocity. The 40º shoulder also helps keep brass from growing, which means rarely, if ever, needing to trim cases once initially fire-formed.</p><p></p><p>So, there are some advantages to the 40º shoulder over a 30º. Some will debate it's minute, and not worth the hassle or difference, but personally, I prefer 40º and very low wall taper cartridges.</p><p></p><p>Yes, there will be a huge difference in performance between the 7mm SS and a 6.5 PRC... The 7mm SS will toss a 180 grain bullet at nearly the same velocities as a 6.5 PRC with a 140-150 grain. Also, the 6.5mm bullet is .020" diameter thinner so it has less sectional density, and less expansion. I'm not hating on the PRC (this time), just pointing out factual differences.</p><p></p><p>Like was stated earlier, if you don't want to go wildcat, and you are not hellbent on a short action cartridge, the 7mm RemMag has a long-proven track record. With modern bullets and brass, and modern powders, it's quite an impressive cartridge, and still holds it own.</p></blockquote><p></p>
[QUOTE="MudRunner2005, post: 1607042, member: 12995"] The SS will have less body taper and a 40º shoulder. This means the SS will hold a little bit more powder, and the straighter walls and 40º shoulder will promote better pressurizing & pressure handling, resulting in more velocity. The 40º shoulder also helps keep brass from growing, which means rarely, if ever, needing to trim cases once initially fire-formed. So, there are some advantages to the 40º shoulder over a 30º. Some will debate it's minute, and not worth the hassle or difference, but personally, I prefer 40º and very low wall taper cartridges. Yes, there will be a huge difference in performance between the 7mm SS and a 6.5 PRC... The 7mm SS will toss a 180 grain bullet at nearly the same velocities as a 6.5 PRC with a 140-150 grain. Also, the 6.5mm bullet is .020" diameter thinner so it has less sectional density, and less expansion. I'm not hating on the PRC (this time), just pointing out factual differences. Like was stated earlier, if you don't want to go wildcat, and you are not hellbent on a short action cartridge, the 7mm RemMag has a long-proven track record. With modern bullets and brass, and modern powders, it's quite an impressive cartridge, and still holds it own. [/QUOTE]
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Is 7mm SST the perfect cartridge for me?
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