Thread: Bullet diameter
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Old May 3, 2006, 11:24 AM   #5
44 AMP
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Join Date: March 11, 2006
Location: Upper US
Posts: 28,677
Cast bullets

cast bullets are intentionally .001 or .002 oversize for standard bore diameter. Since lead compresses (somewhat) this is not a problem, and also allows reasonable accuracy in slightly oversize bores.

Use any standard data for lead SWC of correct weight, and start low, working up to your desired level. Lazercast are pretty hard, I have used them, but do not load them to max in my revolvers. Only because I like something milder for plinking. Just be sure to apply a proper crimp for the load level you use.
Note, some companies (Speer, for one) sell swaged lead bullets, which are softer than Hard cast, and will lead the bore when loaded too hot. A rough rule of thumb is (oddly enough) use your thumb nail. If you can make a dent or gouge in the bullet, then the bullet may be considered "soft". A very small dent, or just a bright spot scraped on the bullet, it is "hard".
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