Just bought myself a new toy, a secondhand Tikka T3 in 308, sat in a Bell & Carson and wearing a T8.
The chap I bought it off gave me around a hundred rounds, some Sako Gamehead 123gr, Sako Hammerhead 150gr and Hornady Superformance 150gr SST. It was zeroed with the SST but with little difference between the 3. I have been out several times now and have managed some good groups with the SST, an average one shown below at just over half inch at 100 yards.
With the 123gr Gamehead I cannot get a decent group, this is average at 2 inches! Shot same time, same place, same way so pretty sure it's not me.
I haven't seen this before in any rifle, could it be it just doesn't like this ammo? I haven't yet tried the Hammerheads (not sure if they are a bit overkill for anything other than boar, so I was told?) so I guess I have to just try some other ammo, or stick with the SST?
My only worry is the SST doing the mincing before I have even skinned anything I have shot.
Grateful for thoughts of anyone who knows more about this ballistics game than me.