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The Range
Ammo & Reloading
12% failure rate in my loading
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<blockquote data-quote="Buzzdraw" data-source="post: 2045397" data-attributes="member: 385"><p>I set my resizing die flat on the the shell plate THEN raise it a tad; about a 1/2 turn. Check your cartridge overall length (COL). Too long there will be trouble. I just ran a batch of 147 gr Zero HP's at a COL of 01.127"; they run fine out of a Bar-Sto as well as stock Glock chambers. Taper crimp with this particular bullet was .375" -.0005</p><p></p><p>Taper crimp is a real monster. Too much and you screw up the bullet diameter, hence loose accuracy. Too little and the bullet backs into the case during chambering process; very bad creating high pressure problems. The TC used for lead bullets is not the same used for jacketed. The TC used for some jacketed bullets doesn't work right with other diameter bullets. Throw in some thinner wall cases, like CCI Blazer brass, and it gets tricky. </p><p></p><p>You have to set TC to be safe with the thinnest brass you are loading. My test is to push the nose of a loaded round, in the thinnest walled case I'm using, against a wood surface. If the bullet telescopes inward, then more TC is needed. Repeat test again until no more inward telescoping.</p><p></p><p>When you change bullets you are loading, or even the lot of brass, you need to re-check TC for safety.</p></blockquote><p></p>
[QUOTE="Buzzdraw, post: 2045397, member: 385"] I set my resizing die flat on the the shell plate THEN raise it a tad; about a 1/2 turn. Check your cartridge overall length (COL). Too long there will be trouble. I just ran a batch of 147 gr Zero HP's at a COL of 01.127"; they run fine out of a Bar-Sto as well as stock Glock chambers. Taper crimp with this particular bullet was .375" -.0005 Taper crimp is a real monster. Too much and you screw up the bullet diameter, hence loose accuracy. Too little and the bullet backs into the case during chambering process; very bad creating high pressure problems. The TC used for lead bullets is not the same used for jacketed. The TC used for some jacketed bullets doesn't work right with other diameter bullets. Throw in some thinner wall cases, like CCI Blazer brass, and it gets tricky. You have to set TC to be safe with the thinnest brass you are loading. My test is to push the nose of a loaded round, in the thinnest walled case I'm using, against a wood surface. If the bullet telescopes inward, then more TC is needed. Repeat test again until no more inward telescoping. When you change bullets you are loading, or even the lot of brass, you need to re-check TC for safety. [/QUOTE]
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