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Rifles, Reloading, Optics, Equipment
Reloading
Help me with an AR load
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<blockquote data-quote="QuietTexan" data-source="post: 2779074" data-attributes="member: 116181"><p>To put some perspective on this - you shot a 2" group at 100 yards, I think that you (or rather your friend) has now moved from the "shoot better ammo" to the "put in better parts" phase with this rifle. You hit about as good of precision as can be expected without knowing what the thing is made out of. The next step of changing optics and trigger is because those both make pretty significant differences in the base precision of the rifle. So hey, you done good, even if you weren't thrilled with what you found you.</p><p></p><p>You didn't say what chamber is actually stamped on the barrel of this rifle, is it 5.56 or 223 Rem or something else? Something also to consider - there is load data from Hornady for 223 Rem, 223 Service Rifle, and 5.56. That 'really low' 24.0gn load you shot for 5.56 is close to the top end of 223 Service rifle.</p><p></p><p>The precision load you found was "slow" in that you were about 150 fps behind on what the book says that the charge weight you loaded should do, it was not "low" in the sense that you were right below the 24.9gn max 223 Service Rifle load for the 73gn ELD-M. That means you found the smallest group in the correct charge weight range and lost it when you pushed it. It's not uncommon to find best precision below max velocity.</p><p></p><p></p><p>The 77gn SMK and 23.0-24.xgns of Varget is the gold standard load for ARs IMO. If you aren't happy with the speed where you found precision with CFE, changing powder is the next step. CFE 223 is fine for lighter bullets but for heavier (65+gn) bullets in 223 Varget is better.</p></blockquote><p></p>
[QUOTE="QuietTexan, post: 2779074, member: 116181"] To put some perspective on this - you shot a 2" group at 100 yards, I think that you (or rather your friend) has now moved from the "shoot better ammo" to the "put in better parts" phase with this rifle. You hit about as good of precision as can be expected without knowing what the thing is made out of. The next step of changing optics and trigger is because those both make pretty significant differences in the base precision of the rifle. So hey, you done good, even if you weren't thrilled with what you found you. You didn't say what chamber is actually stamped on the barrel of this rifle, is it 5.56 or 223 Rem or something else? Something also to consider - there is load data from Hornady for 223 Rem, 223 Service Rifle, and 5.56. That 'really low' 24.0gn load you shot for 5.56 is close to the top end of 223 Service rifle. The precision load you found was "slow" in that you were about 150 fps behind on what the book says that the charge weight you loaded should do, it was not "low" in the sense that you were right below the 24.9gn max 223 Service Rifle load for the 73gn ELD-M. That means you found the smallest group in the correct charge weight range and lost it when you pushed it. It's not uncommon to find best precision below max velocity. The 77gn SMK and 23.0-24.xgns of Varget is the gold standard load for ARs IMO. If you aren't happy with the speed where you found precision with CFE, changing powder is the next step. CFE 223 is fine for lighter bullets but for heavier (65+gn) bullets in 223 Varget is better. [/QUOTE]
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Help me with an AR load
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