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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
22x47 Lapua
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<blockquote data-quote="TracySes23" data-source="post: 938669" data-attributes="member: 52763"><p>One of the good things about the 22-250 AI, it longer case life. The 40° shoulder significantly slows down the brass from flowing to the neck. This migration of the brass from the body of the cartridge will thin the body of the brass therefore weakening it. You can also increase case life by increasing the time between shots. Personally, I take at least 2 minutes between shots with a standard 22-250.</p><p>This coming Fall I intend to get a new barrel for the 22-250 Ackley Improved version for the purpose of improved brass life and bullets up to 75 or 80 grains. There is a special nitride coating available, which also significantly increases barrel life (aka: throat life). Another option I'm strongly considering, is a polygon barrel from PacNor, which I think may also contribute to longer throat life. At the very least, the polygon barrel makes cleaning the barrel easier & faster. Do some research like I did. Maybe you'll come to a conclusion similar to mine.</p><p>Looking at the specs of the 22 x 47, it appears as though the powder capacity isn't much different from the 22-250. The 22x47 has a shoulder angle 0f 30° vs. 28° on the 22-250 & 40° on the Ackley Improved. Think about it.</p><p></p><p>Spencer</p></blockquote><p></p>
[QUOTE="TracySes23, post: 938669, member: 52763"] One of the good things about the 22-250 AI, it longer case life. The 40° shoulder significantly slows down the brass from flowing to the neck. This migration of the brass from the body of the cartridge will thin the body of the brass therefore weakening it. You can also increase case life by increasing the time between shots. Personally, I take at least 2 minutes between shots with a standard 22-250. This coming Fall I intend to get a new barrel for the 22-250 Ackley Improved version for the purpose of improved brass life and bullets up to 75 or 80 grains. There is a special nitride coating available, which also significantly increases barrel life (aka: throat life). Another option I'm strongly considering, is a polygon barrel from PacNor, which I think may also contribute to longer throat life. At the very least, the polygon barrel makes cleaning the barrel easier & faster. Do some research like I did. Maybe you'll come to a conclusion similar to mine. Looking at the specs of the 22 x 47, it appears as though the powder capacity isn't much different from the 22-250. The 22x47 has a shoulder angle 0f 30° vs. 28° on the 22-250 & 40° on the Ackley Improved. Think about it. Spencer [/QUOTE]
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22x47 Lapua
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