Re: 1000yards on a 24 inch barreled 308
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: NineHotel</div><div class="ubbcode-body">I was banging a 10"x12" steel plate at 1020 yards Saturday with a 23.5" barreled 308 and the old Sierra Palma bullet (.450 BC) running them 2850 FPS. It helps to be at 8300" ASL.
The newer high BC 155s (Berger Fullbore and Sierra 2156) need to be driven 2900 FPS in order to remain supersonic at 1k at any altitude under any atmospheric conditions. Many locales can get by with a slightly slower 155 or a moderate speed 175 (.505 BC) out of a 24" barrel. </div></div>
That's interesting...
I used to shoot the Lapua 155 Scenar out of my LTR at 2840 & they were STILL supersonic at 1K (600ft elev) at Tiger Valley. I wonder how these bullets differ, both physically & ballistically.
-Wil
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: NineHotel</div><div class="ubbcode-body">I was banging a 10"x12" steel plate at 1020 yards Saturday with a 23.5" barreled 308 and the old Sierra Palma bullet (.450 BC) running them 2850 FPS. It helps to be at 8300" ASL.
The newer high BC 155s (Berger Fullbore and Sierra 2156) need to be driven 2900 FPS in order to remain supersonic at 1k at any altitude under any atmospheric conditions. Many locales can get by with a slightly slower 155 or a moderate speed 175 (.505 BC) out of a 24" barrel. </div></div>
That's interesting...
I used to shoot the Lapua 155 Scenar out of my LTR at 2840 & they were STILL supersonic at 1K (600ft elev) at Tiger Valley. I wonder how these bullets differ, both physically & ballistically.
-Wil