Re: Over 4,000 round GAP groups!!
Amen! My 308 Savage (far cry from the GAP) has about 1500-2000 rounds through it (far cry from your GAP), and it shoots at least as well as it ever has. I attribute it to moderate ammo and lack of cleaning! LOL
I run a boresnake through it before/after each session, and use Foaming bore cleaner once every 400-500 rounds.
Gotta love a quality 308 rifle.