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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
260 AI barrel length for a light gun
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<blockquote data-quote="woodcr24" data-source="post: 1211185" data-attributes="member: 84411"><p>FWIW, a 24" bbl standard .260 Rem can send a 140-grain projectile at a MV of ≥2,750 fps; in my neck of the woods, at 900' elevation, that projectile (ELD) remains supersonic until it passes ~1,500 yds (at 65F). I doubt that it would be much less with the shorter barrel that you are considering. Re: running the improved version of the cartridge, you might want to look into Quickload as a means of determining how efficiently your propellant will act behind the projectile. In other words, will going the AI route add much to the MV, or at least enough to justify the added price of reloading for it. Or to be more succinct: is 23" enough barrel to permit complete combustion of the propellant and give you the effective range that you are after? Again, QL will shed some light on this for you.</p></blockquote><p></p>
[QUOTE="woodcr24, post: 1211185, member: 84411"] FWIW, a 24" bbl standard .260 Rem can send a 140-grain projectile at a MV of ≥2,750 fps; in my neck of the woods, at 900' elevation, that projectile (ELD) remains supersonic until it passes ~1,500 yds (at 65F). I doubt that it would be much less with the shorter barrel that you are considering. Re: running the improved version of the cartridge, you might want to look into Quickload as a means of determining how efficiently your propellant will act behind the projectile. In other words, will going the AI route add much to the MV, or at least enough to justify the added price of reloading for it. Or to be more succinct: is 23" enough barrel to permit complete combustion of the propellant and give you the effective range that you are after? Again, QL will shed some light on this for you. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
260 AI barrel length for a light gun
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