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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
NON-TYPICAL rifle build in mind; need some help...
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<blockquote data-quote="Rifleman97" data-source="post: 2102307" data-attributes="member: 103996"><p>Your end velocity being lowered by shorter barrel length won't change your barrel life. In fact it might make it shorter.</p><p></p><p>Barrel's aren't worn out at the end, they wear out at the throat where the bullet hits the lands, and the powder is the hottest. In fact, the faster, hotter burning powders you'll have to use, to make up for lack of barrel length, will very possibly shorten your throat life even further.</p><p></p><p>As for cartridge choice, the magnums to look at when it comes to short barrels are the short fat ones, like the 300 WSM. Using the right powders, a 20" 300 WSM will easily outpace a 300 win mag or PRC in the same length barrel. That's where it's efficiency is best used, especially on 150-185 grain projectiles.</p><p></p><p>If it were me, I would go with the 300 WSM over the 7 or 270, because the energy gain you have from the heavier projectiles. Specifically because you have a 6.5 prc now and you don't want to go too low in energy. 300 WSM kicks about like a 30-06 to my shoulder, maybe a tad harder. I don't think a brake is necessary, but if you're recoil sensitive, a good brake can tone it down to creedmoor levels of recoil. Plus, in the ammo shortage, it seems like the only rounds always in stock by me are 300 wsm, so brass and ammo is pretty easily available. 30 caliber bullets are fairly easy to find as well.</p><p></p><p>So yeah, 300 WSM in a 20-22 inch barrel gets the vote from me.</p></blockquote><p></p>
[QUOTE="Rifleman97, post: 2102307, member: 103996"] Your end velocity being lowered by shorter barrel length won’t change your barrel life. In fact it might make it shorter. Barrel’s aren’t worn out at the end, they wear out at the throat where the bullet hits the lands, and the powder is the hottest. In fact, the faster, hotter burning powders you’ll have to use, to make up for lack of barrel length, will very possibly shorten your throat life even further. As for cartridge choice, the magnums to look at when it comes to short barrels are the short fat ones, like the 300 WSM. Using the right powders, a 20” 300 WSM will easily outpace a 300 win mag or PRC in the same length barrel. That’s where it’s efficiency is best used, especially on 150-185 grain projectiles. If it were me, I would go with the 300 WSM over the 7 or 270, because the energy gain you have from the heavier projectiles. Specifically because you have a 6.5 prc now and you don’t want to go too low in energy. 300 WSM kicks about like a 30-06 to my shoulder, maybe a tad harder. I don’t think a brake is necessary, but if you’re recoil sensitive, a good brake can tone it down to creedmoor levels of recoil. Plus, in the ammo shortage, it seems like the only rounds always in stock by me are 300 wsm, so brass and ammo is pretty easily available. 30 caliber bullets are fairly easy to find as well. So yeah, 300 WSM in a 20-22 inch barrel gets the vote from me. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
NON-TYPICAL rifle build in mind; need some help...
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