Hey guys - just looking for some thoughts here. Have a Savage Storm in 300 WM. This model has a pretty light weight barrel. It seems to be shooting a little erratic. Switched scopes, still goofy. Another guy at the range shot it, same deal. Action is tights. (55 in/lbs front and rear) Switched for known good glass from another gun. Pic rail and rings are torqued to spec and loctited. Load - Peterson Long brass, Berger 205 Hybrid, 77.5 H1000. Getting great ES. When I start my shooting session - I'll get 1.5" groups - then as I try different seating depths, neck tension, etc to see if I can tighten things up, the groups just go to heck. Giving maybe 10 minutes between shots. Groups are opening up to 3"-6" and POI shifts at 100 yds.
This is thin, lightweight barrel - only thing I can figure is I have to wait longer between shots. Is that reasonable? Should I be looking at something else?
Pics added to ahow typical first group and example of exact same load after trying to evaluate alternatives. Not real confidence inspiring in underlying system.