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Rifles, Reloading, Optics, Equipment
Reloading
Why I Crimp
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<blockquote data-quote="Laguna Freak" data-source="post: 1922799" data-attributes="member: 87188"><p>I started using the roll-crimp in my .30-06 Hornady seating die to get more complete burn of RL16. I trim my cases the same and set seating depth then adjust the crimp down ~ 11 degrees rotation. If I rotate down too much, I start seeing compression dimpling in the neck or shoulder. Once it is set, I seat and crimp in one stroke. I'm crimping 150 Nosler BT and AB. BT is load development for AB application since their the same geometry, BC, etc and BT is much cheaper. </p><p></p><p> I saw RL16 burn improvement and my groups tightened up. Did it for H4350 too, though it wasnt needed for burn, and saw groups tighten up and velocity increase. Admittedly with 4350 that could be due to ambient temp increase of 20 F. Not planning to test to comfirm that possibility though.</p></blockquote><p></p>
[QUOTE="Laguna Freak, post: 1922799, member: 87188"] I started using the roll-crimp in my .30-06 Hornady seating die to get more complete burn of RL16. I trim my cases the same and set seating depth then adjust the crimp down ~ 11 degrees rotation. If I rotate down too much, I start seeing compression dimpling in the neck or shoulder. Once it is set, I seat and crimp in one stroke. I’m crimping 150 Nosler BT and AB. BT is load development for AB application since their the same geometry, BC, etc and BT is much cheaper. I saw RL16 burn improvement and my groups tightened up. Did it for H4350 too, though it wasnt needed for burn, and saw groups tighten up and velocity increase. Admittedly with 4350 that could be due to ambient temp increase of 20 F. Not planning to test to comfirm that possibility though. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Why I Crimp
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