Re: Tanker Garand
Tanker Garands often have two problems with the barrels.
#1. A barrel with a worn muzzle is shortened to Tanker style, which gives a new muzzle. But, it does absolutely nothing for the worn throat. One often sees Tanker Garands listed with brand new muzzles, but very worn throats, and that does nothing for accuracy.
#2. A 2 piece barrel. People used to take worn out Garand barrels, cut off the front, and sleeve in a turned down 1903 Springfield barrel. This also does nothing for the accuracy. This is often a barrel visable seam line around the barrel at the taper from the major chamber diameter to the major barrel diameter about 4" in front of the chamber. These barrels often have only 2 grooves in them, as many 1903 barrels often did.
What kind of barrel does yours have? Military or commercial. Pull the op rod back and check the numbers stamped on the side of the barrel. If it is a military barrel it could have one of those two problems.
I built my Tanker, using a kit I got from Numrich, in .308 Win, and it is one of my more accurate guns. If you decide to go back to iron sights, put on a National Match front sight. They are thinner, but since the front sight is closer to your eyes, it appears the same width as the standard sight on a standard length barrel.