Matching bullet to barrel.

CS86 · December 24, 2012, 02:55 AM

I'm wondering what the appropriate diameter is suppose to be for a jacketed bullet to match a barrel. I have a .45 ACP 1911 that slugs at .450, and didn't know if it is ok to shoot the hornady XTP bullets that are .451?

As believe the general rule for plain lead cast bullets are you suppose to bump up .001 or .002 past the slug dia. Is this the same for jacketed bullets?

Sport45 · December 24, 2012, 03:57 AM

.451" is fine for jacketed and .452" is fine for lead bullets in .45acp.

Sport45 · December 24, 2012, 04:02 AM

double post, sorry...

oldandslow · December 24, 2012, 05:28 AM

cs, 12/24/12

When you measure your slug after slugging your barrel make sure you use a micrometer and not your calipers. The caliper measurements can be off enough to influence your choice of bullet diameters.

Merry Christmas- oldandslow

wncchester · December 25, 2012, 09:03 AM

All we need do with bullets is avoid being too small. "Expert" opinions aside, a thou larger than normal insures they will not be too small and that's as large as they need be for any purpose. Thus, .451" - .452" is perfect for both jacketed and cast in a normal .45 barrel. If a barrel is slopply made God alone knows what might be needed.

December 24, 2012, 02:55 AM	#1
CS86 Senior Member Join Date: February 28, 2012 Location: South Dakota Posts: 224	Matching bullet to barrel. I'm wondering what the appropriate diameter is suppose to be for a jacketed bullet to match a barrel. I have a .45 ACP 1911 that slugs at .450, and didn't know if it is ok to shoot the hornady XTP bullets that are .451? As believe the general rule for plain lead cast bullets are you suppose to bump up .001 or .002 past the slug dia. Is this the same for jacketed bullets?

December 24, 2012, 03:57 AM	#2
Sport45 Senior Member Join Date: May 25, 1999 Location: Too close to Houston Posts: 4,196	.451" is fine for jacketed and .452" is fine for lead bullets in .45acp. __________________ Proud member of the NRA and Texas State Rifle Association. Registered and active voter.

December 24, 2012, 04:02 AM	#3
Sport45 Senior Member Join Date: May 25, 1999 Location: Too close to Houston Posts: 4,196	double post, sorry... __________________ Proud member of the NRA and Texas State Rifle Association. Registered and active voter.

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December 24, 2012, 05:28 AM	#4
oldandslow Senior Member Join Date: October 2, 2007 Posts: 641	cs, 12/24/12 When you measure your slug after slugging your barrel make sure you use a micrometer and not your calipers. The caliper measurements can be off enough to influence your choice of bullet diameters. Merry Christmas- oldandslow

December 25, 2012, 09:03 AM	#5
wncchester Senior Member Join Date: December 1, 2002 Posts: 2,832	All we need do with bullets is avoid being too small. "Expert" opinions aside, a thou larger than normal insures they will not be too small and that's as large as they need be for any purpose. Thus, .451" - .452" is perfect for both jacketed and cast in a normal .45 barrel. If a barrel is slopply made God alone knows what might be needed.