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Rifles, Reloading, Optics, Equipment
Reloading
Above Max COAL to hit lands
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<blockquote data-quote="j_unzicker" data-source="post: 447054" data-attributes="member: 28887"><p>OK...I set my bullet on the lands and climbed the ladder (as described in the article). I loaded rounds charged from 60.5 - 64 grains of IMR4831 (7RM). Starting with 60.5 grains my bullets climbed up the paper as the charges increased and they climed in velocity about 60 f/s for every grain added. Until I reached 62.5 grains. Then they started dropping lower, until I shot the 64 grain charge. My velocity climbed 120 f/s and the shot was about 4 inches higher than my highest shot. Primer looked OK and I didn't feel a tight bolt, but I am assuming that this is my gun saying that's enough powder.</p><p>I will take the next step and vary my charges between 61 - 63 grains with increments every 2-3 tenths of a grain and see how that ladder looks.</p><p>I really like this method. Saves bullets and time. I don't have to worry about groups until my gun tells me that I have found the right charge...then I will play with the COAL.</p></blockquote><p></p>
[QUOTE="j_unzicker, post: 447054, member: 28887"] OK...I set my bullet on the lands and climbed the ladder (as described in the article). I loaded rounds charged from 60.5 - 64 grains of IMR4831 (7RM). Starting with 60.5 grains my bullets climbed up the paper as the charges increased and they climed in velocity about 60 f/s for every grain added. Until I reached 62.5 grains. Then they started dropping lower, until I shot the 64 grain charge. My velocity climbed 120 f/s and the shot was about 4 inches higher than my highest shot. Primer looked OK and I didn't feel a tight bolt, but I am assuming that this is my gun saying that's enough powder. I will take the next step and vary my charges between 61 - 63 grains with increments every 2-3 tenths of a grain and see how that ladder looks. I really like this method. Saves bullets and time. I don't have to worry about groups until my gun tells me that I have found the right charge...then I will play with the COAL. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Above Max COAL to hit lands
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