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Rifles, Reloading, Optics, Equipment
Reloading
.223 bolt action 600 yd
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<blockquote data-quote="J E Custom" data-source="post: 1429352" data-attributes="member: 2736"><p>Depending on the twist rate of your barrel, this is where the heavier bullets are needed. Something in the 69 to 90 grain works best as long as you have a twist rate of 1 in 7 for the 80s and 90 grains. </p><p></p><p>The i in 8 twist is recommended for the 55 to 70 grain and depending on the bullet design will sometimes work for the 75 grain.</p><p></p><p>If your twist is more than 1 in 8 you will probably need to shoot bullets lighter than 55 grains and load to max for maximum performance at 600 yards. you may have to seat long (Single load) to gain more powder capacity and use secant ogive bullets to reach the lands or come close to them with less bullet body encroachment in the cases.</p><p></p><p>I rechambered to 223 AI to get enough velocity for longer distance with a 1 in 8 twist and gain a little more powder capacity (it shoots very well using the 69 grain bullets).</p><p></p><p>The 223 is very capable at 600 yards as long as conditions are good or you are good at reading wind and mirage.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1429352, member: 2736"] Depending on the twist rate of your barrel, this is where the heavier bullets are needed. Something in the 69 to 90 grain works best as long as you have a twist rate of 1 in 7 for the 80s and 90 grains. The i in 8 twist is recommended for the 55 to 70 grain and depending on the bullet design will sometimes work for the 75 grain. If your twist is more than 1 in 8 you will probably need to shoot bullets lighter than 55 grains and load to max for maximum performance at 600 yards. you may have to seat long (Single load) to gain more powder capacity and use secant ogive bullets to reach the lands or come close to them with less bullet body encroachment in the cases. I rechambered to 223 AI to get enough velocity for longer distance with a 1 in 8 twist and gain a little more powder capacity (it shoots very well using the 69 grain bullets). The 223 is very capable at 600 yards as long as conditions are good or you are good at reading wind and mirage. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.223 bolt action 600 yd
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