Others with much more know how will weigh in, but, you may not even need to do it. Lapping is done by better barrel makers to smooth things out. If your barrel was made by a reputable aftermarket barrel maker, it may have been done. If not, someone here may answer up whether or not the factory maker would have done it in your case. "Fire lapping" is a kit you can buy, load your own rounds, and shoot successively finer grits embedded in the bullets thru it which polishes things up.
I have a match grade M1A built 10 years ago by one of the best with a match grade Krieger barrel. First several shots at 100 yards were in a 4" group with match ammo ( :shock: ). An Army Marksmanship Unit fella that was helping me had me shoot 1 round, then wet brush, wet patch, dry patch, etc., for 10 shots, then every 2 shots for 20 shots. then every 5 for 20. The groups shrunk to where the rifle will keep shot after shot in the space of a nickel at 100 yards, open sights. My eyes suck now, I doubt I can keep groups like that any more. Who knows, maybe firing rounds thru the gun would have achieved the same result. Precision Shooting magazine had a similar procedure using Remclean with a patch over an undersize brush.......prefering never to let a brush touch a barrel. Its all voodoo. Shoot it, clean it with whatever method floats your boat, can't hurt no matter what you do. If you need to lap it later you always can. Clear as mud?
R
