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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 PRC or 30 Sherman mag
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<blockquote data-quote="CA48" data-source="post: 2545916" data-attributes="member: 21446"><p>My experiences pretty much mirror Codys when it comes to my personal wildcats, AI and 3 Sherman cartridges I have loaded for. That was a good explanation. I think you can expect to easily run 75-100 fps over a standard 300 PRC all things being equal when you add 3.5grs of case capacity, reduce case taper, and add a 40* shoulder. I've loaded for a lot of 300 PRC's 24-26" barrels and they shot best with n565 and h-1000 at 2850-2950 with 205 bergers. I could have and did run some faster but that's where they shot best most of the time. And I would would not run a customer rifle at the top end anyway. My personal 30 Sherman Mag shoots best at 2950 with 215s and n570 out of a 20" barrel if that tells you anything even though it's not a direct comparison. Although I think mine will not be the norm but on the higher end for velocity and I am running a warm load. But for educational purposes I've added 0.6gr to my load and still got 10 plus firings out of a case with some slight ej shadows.</p></blockquote><p></p>
[QUOTE="CA48, post: 2545916, member: 21446"] My experiences pretty much mirror Codys when it comes to my personal wildcats, AI and 3 Sherman cartridges I have loaded for. That was a good explanation. I think you can expect to easily run 75-100 fps over a standard 300 PRC all things being equal when you add 3.5grs of case capacity, reduce case taper, and add a 40* shoulder. I’ve loaded for a lot of 300 PRC’s 24-26” barrels and they shot best with n565 and h-1000 at 2850-2950 with 205 bergers. I could have and did run some faster but that’s where they shot best most of the time. And I would would not run a customer rifle at the top end anyway. My personal 30 Sherman Mag shoots best at 2950 with 215s and n570 out of a 20” barrel if that tells you anything even though it’s not a direct comparison. Although I think mine will not be the norm but on the higher end for velocity and I am running a warm load. But for educational purposes I’ve added 0.6gr to my load and still got 10 plus firings out of a case with some slight ej shadows. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 PRC or 30 Sherman mag
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