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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel lengths vs. Velocity gain/loss
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<blockquote data-quote="Trickymissfit" data-source="post: 479245" data-attributes="member: 25383"><p>quite honestly a 26" barrel in a 22-250 is nothing more than a barrel harmonics disaster looking for a place to happen. The .250 savage case is not exactly a big case, and is known to work quite well with a 22" barrel, so a 24" barrel should be plenty of barrel even with the Ackley case. </p><p> </p><p> A given barrel profile will be stiffer the shorter it is verses the the same contour but longer. A typical #7 contour 21" long is 2.75 times stiffer than the samething 26" long (275%). A 24" barrel will probably be 33% stiffer, making everything group a little better. The stiffer the barrel, the more controll it has over harmonics.</p><p>When you goto the shorter and stiffer profile, you simply adjust the powder burning range you work out of. With today's huge array of powders, this shouldn't be much of a problem with the .250 case. It might with a .300 mag case.</p><p> </p><p> I shortened a .223 barrel six inches, and lost a huge 75 fps! (not close to a max load by the way). Still use the same three or four basic powders I was using before, and everything's better with it. Plus the balance is so good that I can shoot a heavy barrel offhand without any trouble what so ever.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 479245, member: 25383"] quite honestly a 26" barrel in a 22-250 is nothing more than a barrel harmonics disaster looking for a place to happen. The .250 savage case is not exactly a big case, and is known to work quite well with a 22" barrel, so a 24" barrel should be plenty of barrel even with the Ackley case. A given barrel profile will be stiffer the shorter it is verses the the same contour but longer. A typical #7 contour 21" long is 2.75 times stiffer than the samething 26" long (275%). A 24" barrel will probably be 33% stiffer, making everything group a little better. The stiffer the barrel, the more controll it has over harmonics. When you goto the shorter and stiffer profile, you simply adjust the powder burning range you work out of. With today's huge array of powders, this shouldn't be much of a problem with the .250 case. It might with a .300 mag case. I shortened a .223 barrel six inches, and lost a huge 75 fps! (not close to a max load by the way). Still use the same three or four basic powders I was using before, and everything's better with it. Plus the balance is so good that I can shoot a heavy barrel offhand without any trouble what so ever. gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel lengths vs. Velocity gain/loss
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