To re-barrel or not to re-barrel

[beagle]

Different but related. My shooting partner bulged the barrel on a Ruger .45 auto. He finally got the barrel out and being a machinist, turned it back to contour and counterbored past bulge. Lost a little velocity but no accuracy. That was 10 years ago and it's still going./beagle

Just keep in mind that the military frequently counter-bored both rifles and carbines to restore accuracy to worn muzzles, The muzzles seem to swallow a gauge, but are nearly as accurate as new barrels. Don't sell recrowning and counter-boring short. They can work miracles with many of these old warhorses.

[Gtek]

I believe they counterbored muzzles that did not have a gas port close to the muzzle for a controlled pressure window of dwell time.

[Pirate69]

There are other things to consider as well. A Garand is not the most accurate rifle in the world unless you spend a bunch to match condition. You have a gas cylinder hanging off the barrel that can be moving slightly. The stock fit can be critical and if not tight, groups will open up. If you have a Service Grade Garand from CMP, there is nothing wrong with your barrel. I would suggest, before you spend money on a new barrel, you do some other the things that you can do to improved accuracy. Suggested:

1) Ping the splines on barrel to tighten-up the front sight
2) Shim the action to tighten it up as well.
3) Ensure the loads are appropriate for the Garand gas system.
4) Test same load with gas plug in place and with it loosen. See the effect of the gas system on accuracy.
5) Re-crown if the muzzle needs it.

[KenT7021]

The Army counterbored carbine barrels but did not counterbore M1 rifle barrels.The gas port is too close to the muzzle.Try to find a machine shop with pin gages and have the muzzle checked.Cleaning rod damage is common on M1's.It's possible the CMP may do rebarreling at Anniston.I just checked the CMP website.An M1 .30-06 barrel is $189.95.They will rebarrel your M1 but price is not listed.Contact info for gunsmithing work is on their website.They use Criterion barrels.

[Victor N TN]

Go here and get you a cheap countersink. OK it won't be a benchrest quality crown. BUT, you want to cut deep enough to get down past the rounded part of the current crown. $20 bucks and a hand drill will get you into clean metal. Then make the decision to spend more money or not. Good luck.

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M.A. Ford - 1/2" Diam x 1/4" Shank Diam x 2" Overall Length 90° Countersink - 1 Flute, Single End, High Speed Steel, Bright Finish
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