ORIGINAL: frontier gander
I think the 535g of lead had a lot to do with it. If I recall a regular PRB is 147g, so what are you shooting a .62? Chap Gleason
535 PRB = .535 diameter. Which is .54cal i think? I only shoot .50's so im a little lost after that.
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I think you're right. A .54 caliber will normally shoot either a .530 grain at 224 grain or a .535 grain at approximately 230 grain. A .570 (.58 caliber)weighs 284 (as I remember) and the .62 caliber is 324 grain in weight.