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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Which Hammer bullet for 280ai 140 Absolute Hammer or 143 Hammer Hunter
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<blockquote data-quote="nicholasjohn" data-source="post: 2249555" data-attributes="member: 109113"><p>The neck tension you mention makes perfect sense, since these bullets have around half the bearing surface of a regular bullet. Half the gripping area should necessitate around twice as much neck tension for best rests. Steve had told me that the reason for the magnum primer is to have the bullet moving pretty good under a good head of pressure when it first runs contacts the rifling. More neck tension would let prssure build a little before the bullet is released from the case neck. I can see how a crimp would also facilitate this. </p><p></p><p>I've been following ButterBean's work with the Lee FCD, and that guy has really worked the bugs out of the process. I'll bet that there are no fly-specks in his pepper shaker. He's also worked a lot with the Hammer bullets, and posted a ton of good stuff about it here. I got myself one of the Consistent Crimp tools that enables handloaders to use a specific amount of crimping pressure with this die, which ought to accomplish the same thing as BB's methodology - just in a different manner. ( I learned about that device on this forum as well.) I talked with the guy who sells those and got a lot of good intel on how to use it. ( He also has a really good video on it.) I've got a lot of angles to explore here, and need to bring in the variables one at a time. I plan to start with H4350 and the .003-.004 neck tension that Steve recommended ( with no crimp ) and then work my way into crimping in the first relief groove with a light crimp and progressive heavier crimps until I see what works best for accuracy, SD & ES. Will post results when I have them, and thanks for your input, Sir.</p></blockquote><p></p>
[QUOTE="nicholasjohn, post: 2249555, member: 109113"] The neck tension you mention makes perfect sense, since these bullets have around half the bearing surface of a regular bullet. Half the gripping area should necessitate around twice as much neck tension for best rests. Steve had told me that the reason for the magnum primer is to have the bullet moving pretty good under a good head of pressure when it first runs contacts the rifling. More neck tension would let prssure build a little before the bullet is released from the case neck. I can see how a crimp would also facilitate this. I've been following ButterBean's work with the Lee FCD, and that guy has really worked the bugs out of the process. I'll bet that there are no fly-specks in his pepper shaker. He's also worked a lot with the Hammer bullets, and posted a ton of good stuff about it here. I got myself one of the Consistent Crimp tools that enables handloaders to use a specific amount of crimping pressure with this die, which ought to accomplish the same thing as BB's methodology - just in a different manner. ( I learned about that device on this forum as well.) I talked with the guy who sells those and got a lot of good intel on how to use it. ( He also has a really good video on it.) I've got a lot of angles to explore here, and need to bring in the variables one at a time. I plan to start with H4350 and the .003-.004 neck tension that Steve recommended ( with no crimp ) and then work my way into crimping in the first relief groove with a light crimp and progressive heavier crimps until I see what works best for accuracy, SD & ES. Will post results when I have them, and thanks for your input, Sir. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Which Hammer bullet for 280ai 140 Absolute Hammer or 143 Hammer Hunter
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