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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Badlands Precision Bullets thread - From BC to terminal ballistics
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<blockquote data-quote="akmtnhnt" data-source="post: 2711142" data-attributes="member: 120824"><p>If you take a 250gr 338 lead and 250gr 338 copper bullet and seat them to the same COAL, the copper bullet is a good bit further into the case because it's longer. Seating depth greatly effects peak pressure and also doesn't allow as much powder. Because of those two things, I've found, in general, that short grain powders that pack into a case more tightly work better and even better if they are double base powder to make up for the lack of space. For that reason, I would not just take a 338 lead bullet data and use it with a mono. Start with Barnes or the CX bullet data, not say Berger.</p><p>I make sure all my loads are under max pressure by modeling them in GRT instead of counting on brass to be really strong and compensate for overpressure. The nice thing about starting with GRT or Quickload is you'll know the top couple powders for velocity before you even shoot a bullet.</p></blockquote><p></p>
[QUOTE="akmtnhnt, post: 2711142, member: 120824"] If you take a 250gr 338 lead and 250gr 338 copper bullet and seat them to the same COAL, the copper bullet is a good bit further into the case because it's longer. Seating depth greatly effects peak pressure and also doesn't allow as much powder. Because of those two things, I've found, in general, that short grain powders that pack into a case more tightly work better and even better if they are double base powder to make up for the lack of space. For that reason, I would not just take a 338 lead bullet data and use it with a mono. Start with Barnes or the CX bullet data, not say Berger. I make sure all my loads are under max pressure by modeling them in GRT instead of counting on brass to be really strong and compensate for overpressure. The nice thing about starting with GRT or Quickload is you'll know the top couple powders for velocity before you even shoot a bullet. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Badlands Precision Bullets thread - From BC to terminal ballistics
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