Thanks for the input guys. Keep them coming.

It appears my techniques of tuning the 375 as I would a bench rest rig (which I also shoot) is a touch dramatic.

Bench guns mostly shoot best with hot loads, powders that fill the case and the projectile touching the lands.

I shoot a golf bag full of rifles including 22-250, 243W and 270W all zeroed around 200 yds which I regularly practice shoot at the range. This gives me great confidence in the field as I know what every rifle will do. This is my approach with the 375 but I guess the advice largely is "cool it", lighten the loads and stick to the max 3.6" OAL.....Peter