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SL1 · July 29, 2008, 01:04 PM

Even jacketed bullets vary in diameter. Hornady makes .430" bullets, while most other jacketed bulets are 0.429" So long as your chambers allow the .430 bullets to fully chamber (i.e., the action closes so that the gun will fire), it really doesn't matter. The larger diameters MIGHT be more accurate if you have large throats.

There really isn't much pressure difference between cartridges loaded with bullets of the two different diameters, SO LONG AS THEY HAVE THE SAME SHAPE AND CONSTUCTION. But, bullet manufacturers don't tend to make identical shapes and identical jackets, so USE LOAD DATA FOR THE BULLET YOU HAVE instead of just substituting it in somebody else's data. Or, if you must substitute, learn now to properly take the differences into account.

SL1

July 29, 2008, 01:04 PM	#4
SL1 Senior Member Join Date: November 8, 2007 Posts: 2,001	Even jacketed bullets vary in diameter. Hornady makes .430" bullets, while most other jacketed bulets are 0.429" So long as your chambers allow the .430 bullets to fully chamber (i.e., the action closes so that the gun will fire), it really doesn't matter. The larger diameters MIGHT be more accurate if you have large throats. There really isn't much pressure difference between cartridges loaded with bullets of the two different diameters, SO LONG AS THEY HAVE THE SAME SHAPE AND CONSTUCTION. But, bullet manufacturers don't tend to make identical shapes and identical jackets, so USE LOAD DATA FOR THE BULLET YOU HAVE instead of just substituting it in somebody else's data. Or, if you must substitute, learn now to properly take the differences into account. SL1