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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
270 bullet best for whitetailed deer
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<blockquote data-quote="entoptics" data-source="post: 1757230" data-attributes="member: 104268"><p>Your requirements are a bit optimistic. I can think of no 0.277 bullet that will unquestionably hold together at 3300 fps, yet still reliably expand at 770 yds. IMO, with tough bullets, I'd keep impact velocities in the 2000 fps realm or higher.</p><p></p><p>I did some JBM math to get a rough idea of 770 yd velocity from your setup, using "tough" bullets capable of surviving close hits at 270 AI velocities. I just guessed the speeds based on your statement that you're getting 3300 with a 130 gr.</p><p></p><p><em>130 Nosler AB @ 3300 fps</em> - 2000 fps @ ~600 yds, ~1720 fps @ 770 yds</p><p><em>140 Nosler AB @ 3175 fps</em> - 2000 fps @ ~650 yds, ~1800 fps @ 770 yds</p><p><em>130 Barnes TTSX @ 3250 fps </em>- 2000 fps @ ~540 yds, ~1575 fps @ 770</p><p><em>140 Barnes TSX @ 3150 fps </em>- 2000 fps @ ~510 yds, ~1550 fps @ 770 yds</p><p></p><p>Frankly, I don't think there's a bullet that will do what you are hoping, as there's nothing "tough" in 0.277 with a good enough B.C. to carry 2000 fps further than about 650 yds.</p><p></p><p>Nosler hasn't released the B.C. for the new 150 gr Accubond, so that just might get you there, but I still doubt it, unless they've done some magic with the design (and I don't mean Nosler magic of quoting an extremely inflated B.C.).</p></blockquote><p></p>
[QUOTE="entoptics, post: 1757230, member: 104268"] Your requirements are a bit optimistic. I can think of no 0.277 bullet that will unquestionably hold together at 3300 fps, yet still reliably expand at 770 yds. IMO, with tough bullets, I'd keep impact velocities in the 2000 fps realm or higher. I did some JBM math to get a rough idea of 770 yd velocity from your setup, using "tough" bullets capable of surviving close hits at 270 AI velocities. I just guessed the speeds based on your statement that you're getting 3300 with a 130 gr. [I]130 Nosler AB @ 3300 fps[/I] - 2000 fps @ ~600 yds, ~1720 fps @ 770 yds [I]140 Nosler AB @ 3175 fps[/I] - 2000 fps @ ~650 yds, ~1800 fps @ 770 yds [I]130 Barnes TTSX @ 3250 fps [/I]- 2000 fps @ ~540 yds, ~1575 fps @ 770 [I]140 Barnes TSX @ 3150 fps [/I]- 2000 fps @ ~510 yds, ~1550 fps @ 770 yds Frankly, I don't think there's a bullet that will do what you are hoping, as there's nothing "tough" in 0.277 with a good enough B.C. to carry 2000 fps further than about 650 yds. Nosler hasn't released the B.C. for the new 150 gr Accubond, so that just might get you there, but I still doubt it, unless they've done some magic with the design (and I don't mean Nosler magic of quoting an extremely inflated B.C.). [/QUOTE]
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270 bullet best for whitetailed deer
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