Discussion in 'Gunsmithing and Repairs' started by modwerdna, Nov 22, 2013.
Before you try to fix something that isn't broke.
IMO: You already half wore out the barrel with the Tubbs fire lapping system!!
My first home-built rifle was a DCM 03A3 in 1962 when I was 18 years old.
It's still shoots sub-MOA with the 2-groove barrel and handloads.
Homemade 03A3 30-06 --- 98 Mauser 25-06
every word. If I had doubts I'd maybe go ahead and crown the muzzle, but that's it. Mine shoots good too... second stock I ever did; Richards Micro-fit in AA Tiger Maple
dangit, can't figure out how to post the pic. maybe later....it's late.
Don't worry about barrel whip. Free floated ones whip the same amount and at the same frequency for every shot fired. Whipping free floating barrels are probably the most repeatable thing in your accuracy system; don't mess with them. Accuracy = shooter + parts fit + parts quality + ammo quality + sight quality. Any one of these with too much variance in its performance makes for less accuracy.
110 Sierra HP + 53.0 IMR-4064 gives slightly under an inch.
125 Sierra HP + 53.0 IMR-4895 is nearly as good.
PS, I also reload and am considering getting into casting bullets for my assorted mil-surps to lower feeding costs for Enfields, Arisakas, Mausers, Swiss rifles etc. if this makes a difference.
I'd say the old surplus GI barrel would be very likely to be in spec and screw right on.
Then Feed, Fire, & Function Freely.
They didn't expect to have to do any tinkering around to get them to work when they used them in arsenal rebuilds back then.
I have no experience with the new Criterion barrels, but a lot of folks seem to think pretty highly of them.
But they will require fitting and head-spacing by your gunsmith as they are short chambered .010" and will need final headspace reamed.
It could have come right from the factory like that early in 1944 during WWII.
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