I have a nagging problem, and would be very grateful for opinions.
I've been having some on-and-off accuracy problems with a Tikka T3 .222.
Sometimes it cloverleafs at 100m, sometimes I can't get groups under 3 inches at 50m. I've been going insane trying to work out what the problem is, and have gone through *all* the variables.
I finally noticed that the spent cases were coming out slightly distorted. These are standard factory rounds (Sako 55gr). About a 6th of the circumference is slightly flattened.
I've cycled rounds through the chamber without firing, and there are no scratch marks or distortions. There's no resistance when cycling rounds, fired or unfired. The distortion only apprears on fired cases.
Is this likely to be the root of my accuracy problem? And if so, what might be causing it? And is there is there a solution?
It is very odd: the rifle behaved beautifully for the first few months I had it, and then the consistency fell off a cliff. Nothing had changed: same cleaning regime, same factory ammo, no knocks etc etc.
I'd be extremely grateful for any input