Figuring stuff out!
Latest groups, 3 shots per group, letting barrel cool between groups. In order of shooting today:
Distance is 100m
.582"
.275"
.819"
1.554"
.950"
.924"
2.212"
.807"
.622"
Average = .972"
Average without that D*mn 2.212... = 0.817"
Can't say enough how pleased I am, thanks everyone for all of your advice. This is what I've done:
-Started shooting off bags, removed my sling swivels.
-Bedded the gun with JB Weld, removed a bit of plastic from the stock so it doesn't touch the barrel at all.
-Reseated the scope, set it straight vertical, tightened everything nice.
-Adjusted the trigger down to a very light level. Don't have a gauge, but breaks easily. Feels about similar to my accutrigger on my Savage.
-Quit using Hornady BTSP, as I noticed the lead on the tip is often not even and had advice that it doesn't work. Started using 58gr Varmint Grenades.
-Used the the ladder test to determine best charge (47.5gr H380) then picked best COL (looks to be 2.610, still have to shoot more)
-Cleaned all the oil between the action and the stock.
-Cleaned the barrel really well between every time out at the range (used to skip a few), ran 5x brass brush with solvent, then patches until they come clean (anywhere from 5 to 15 depending on... not sure what depending on... just depending on.)
I think that's what I've done. Thanks everyone for all your great advice, it is SO encouraging to break the 1" mark with a factory rifle. I'm saving for a precision rig (after I define precision of course...

) but in the meantime this is awesome.
Thanks again for your advice,
Barry