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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
260 remington bbl length/vel?
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<blockquote data-quote="LouBoyd" data-source="post: 585818" data-attributes="member: 9253"><p>All rifles are tradeoffs. You have to decide what you want and what's appropriate. I have a 260 Rem DPMS LR-260 with a 24" barrel and a 260 Rem XP-100 with a 15-7/8" barrel. It's not that one is good and one is bad but they're very different. The chart below assumes 123 grain Lapua Scenars, which have a decent BC and will fit in a short action magazine. I shoot it in both guns. Obvioiusly other bullets and loads will give different numbers. Numbers are from Quickload. The load is 100% fill, 42.8 grain H4350. 2.80 COAL at sea level standard metro.</p><p></p><p>Len MV ME 1KV 1KE 1KW</p><p></p><p>26 2965 2391 1524 634 71.6</p><p>24 2906 2306 1490 606 73.4</p><p>22 2848 2215 1453 577 75.6</p><p>20 2781 2112 1414 544 78.3</p><p>18 2705 1988 1366 510 81.7</p><p>16 2616 1869 1314 472 85.9</p><p></p><p>Len barrel length in inches</p><p>MV muzzle velocity in fps</p><p>ME muzzle energy in ft-lbs</p><p>1kV 1000 yard velocity fps</p><p>1KE 1000 yard energy ft-lbs</p><p>1Kw 1000 yard wind deflection for 10 mph wind inches</p><p></p><p>Draw your own conclusions. No one step in barrel length is dramatic. That's just one bullet and load.</p></blockquote><p></p>
[QUOTE="LouBoyd, post: 585818, member: 9253"] All rifles are tradeoffs. You have to decide what you want and what's appropriate. I have a 260 Rem DPMS LR-260 with a 24" barrel and a 260 Rem XP-100 with a 15-7/8" barrel. It's not that one is good and one is bad but they're very different. The chart below assumes 123 grain Lapua Scenars, which have a decent BC and will fit in a short action magazine. I shoot it in both guns. Obvioiusly other bullets and loads will give different numbers. Numbers are from Quickload. The load is 100% fill, 42.8 grain H4350. 2.80 COAL at sea level standard metro. Len MV ME 1KV 1KE 1KW 26 2965 2391 1524 634 71.6 24 2906 2306 1490 606 73.4 22 2848 2215 1453 577 75.6 20 2781 2112 1414 544 78.3 18 2705 1988 1366 510 81.7 16 2616 1869 1314 472 85.9 Len barrel length in inches MV muzzle velocity in fps ME muzzle energy in ft-lbs 1kV 1000 yard velocity fps 1KE 1000 yard energy ft-lbs 1Kw 1000 yard wind deflection for 10 mph wind inches Draw your own conclusions. No one step in barrel length is dramatic. That's just one bullet and load. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
260 remington bbl length/vel?
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