,45 Cal. Bullet Size
I have been loading 45 ACP and 45LC for quite some time and have always used .451 bullets...primarily because that is what the loading manuals tested.
I have noted that bullet mfgs list both .451 and .452 pistol bullets...some list .4515
My questions : Is there any real difference in these sizes other than how the particular Mfg lists them...or do some pistols prefer one size over the other with regard to accuracy?
I have noted that bullet mfgs list both .451 and .452 pistol bullets...some list .4515
My questions : Is there any real difference in these sizes other than how the particular Mfg lists them...or do some pistols prefer one size over the other with regard to accuracy?
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Pre WWII model revolvers normally have a groove diameter of .454", while post WWII models usually run 0.451". I have never loaded for anything that didn't take cast bullets sized to .452" and I never had an issue with any of them.
Of course, none of my handguns that shoot .45LC could be considered to possess bench rest accuracy while none of my handguns in .45ACP seem to notice any difference.
I think it is just how the particular manufacturer lists them. Your milage may vary, however.
Dan R0 -
If you shoot lead bullets that or undersize 451 in a 452 bore then you will get heavy leading . I prefer a bullet about .001 over bore bore size . I have seen 230 Ball bullets run anywhere from .4495 to .452 and 1911 type barrels from .450- .452 most Target shooters like Barsto barrels because the run on the small size and shoot these 230 grain bullets better At camp perry you shoot targets at 25 and 50 yards but the backstop is 1000 yards away I have gone out after the match and P2 shot bags of bullets laying in the grass you can see where some of theses have STRIPPED in the rifling. This does not happen as often with rifle bullets because the higher pressures normally cause the base of the bullet to upset and fill the bore. 0
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