Thread: Breaking in the 260rem and load development

Looks like a nice bit if kit

The group you've posted looks like it starts great and then goes pear shaped, are you letting the barrel cool between shots? A lot of rifles wander like this when they get too hot.

I'd be checking ring screws are tight with a torque wrench as well as the action screws torqued to the manufacturers specs. Overtightened action screws are the devil.

After that I'd look at ammo and then technique. Are you shooting off a bipod or sandbags?

With the barrel cleaning, a couple of my past 308s shot like dog shit with a dirty barrel, my rem mag on the other hand shoots pretty good clean, outstanding dirty. Also when you say clean are you using solvent?