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The Range
Firearms Chat
AR-15 Barrel Question
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<blockquote data-quote="lasher" data-source="post: 3164466" data-attributes="member: 40522"><p>fanatic accuracy folks also want to load to the "proper" OAL and hornady makes tools to measure the jump (leade) length that is best for that barrel, leade being the distance the bullet jumps prior to engaging the rifling. a short jump is good but you do not want the bullet engaging the lands prior to the primer igniting but if you have say more that 1 barrel then for correct possible OAL on several barrels demanding special length for each barrel and creating a nightmare of keeping track of which rifle gets which length. i have over 10 barrels and just use the standard bump back the shoulder around .003, everything runs well and is accurate to clover leaf and bullets in bullet holes. i ony use the medium weight barrels to handle heat, i don't claim they are more accurate than pencil barrels, i do believe the medium barrels remain more accurate over various time/round count than pencil barrels. all the barrels i have are from one builder (not counting pistols or 22 LR), and all the barrels i used are much more accurate than my current level of skill</p></blockquote><p></p>
[QUOTE="lasher, post: 3164466, member: 40522"] fanatic accuracy folks also want to load to the "proper" OAL and hornady makes tools to measure the jump (leade) length that is best for that barrel, leade being the distance the bullet jumps prior to engaging the rifling. a short jump is good but you do not want the bullet engaging the lands prior to the primer igniting but if you have say more that 1 barrel then for correct possible OAL on several barrels demanding special length for each barrel and creating a nightmare of keeping track of which rifle gets which length. i have over 10 barrels and just use the standard bump back the shoulder around .003, everything runs well and is accurate to clover leaf and bullets in bullet holes. i ony use the medium weight barrels to handle heat, i don't claim they are more accurate than pencil barrels, i do believe the medium barrels remain more accurate over various time/round count than pencil barrels. all the barrels i have are from one builder (not counting pistols or 22 LR), and all the barrels i used are much more accurate than my current level of skill [/QUOTE]
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