.451 or .452, what's the difference?


PDA






GSDFAN
January 5, 2008, 08:18 PM
Newbie question: I'm reloading for my .45's and it's working out pretty well so far. It's hard to find .45 bullets around here but I have noticed some in .451 and .452 diameter. What's the difference to my .45 cases? Is .452 the heavier bullet weights like 250 and 300gr? What do I need to know about this?
Thank you.:confused:

If you enjoyed reading about ".451 or .452, what's the difference?" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!
Khornet
January 5, 2008, 08:21 PM
lead .45 bullets are usually .452, while jacketed are usually .451.

nate.45
January 5, 2008, 09:07 PM
1/1000th of an inch.;)

Walkalong
January 5, 2008, 09:39 PM
Khornet got it. Also, plated bullets are usually closer to .452.

GSDFAN
January 5, 2008, 10:17 PM
Ok, that makes since. Does 1/1000" affect the setting of my flare die or is it just trial and error? I have been using Hornady 230 (.451) HP/XTD, 230g FMJ (.451) encapsulated, FN, RN etc. what ever I can lay my hands on.

Stinger
January 5, 2008, 10:46 PM
Hornady's 45 bullets that weigh over 230g are usually .452 in diameter.

shc1
January 5, 2008, 10:57 PM
Iíve used .451 and .452 in 45 ACP, no problems at all.
As said above itís only 1/1000 of an inch.
What part of VA? Might see you at the range.

GSDFAN
January 5, 2008, 11:01 PM
Roanoke area

mike_in_md
January 6, 2008, 12:24 AM
.452 will have more contact with the rifling in the barrel. It's the size I use for my 185 LSWC hollow points.

kildar
January 6, 2008, 01:35 AM
What about a .45 a cast bullet measuring .453 would it have detrimental affects on accuracy in a .45 auto?

NuJudge
January 6, 2008, 02:51 AM
Slug your bore. If your pistol groove diameter is .451", you are about right with a .452" cast bullet.

I have always believed that bigger is better in cast bullets, up to where they will not chamber, and the less sizing the better. The problem is that a .453" bullet in your brass may be too big in diameter to chamber freely.

1911NM
January 8, 2008, 12:18 PM
NuJudge is on the button. Depending on what you are shooting, ie., semi-auto, if slugging your bore comes out large enough for the .453, do you really want to shoot that diameter, or would you be better served by getting a new barrel. If you're in the wheel gun bunch, swapping barrels is not as easy so you might want to use the .453 to tighten up some sloppy groups.

If you enjoyed reading about ".451 or .452, what's the difference?" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!