I worked very hard on getting my 82G up to bench level shooting.
1. Nemohunter trigger job. He does great work, fast turn-around, very reasonable price, greatly improved and lighter pull afterwards.
2. Scope base. I used a EGW scope base for a 52C that mounts right on.
3. Scope. I used the standard benchrest scope, the Weaver T36.
4. Action screws. I played with torque a lot but found the best was 36in/lbs on both screws for me.
5. Ammo. I tried virtually every .22 ammo there is, seriously. I have lots of different in my stock, but I also ordered even more. I tested subsonic rounds, every flavor of Eley, Wolf, SK, RWS, Federal, and Lapua and a few others. Best for me was Lapua Center-X.
6. Tuner. Using the Hopewell method, I shrunk group sizes on average by 0.1". That might not sound like a lot, but the gun was shooting 0.4" average groups across ten 5-shot groups and that went down to 0.3" average across ten 5-shot groups.
Didn't touch the crown, didn't touch the bedding. Not sure I believe that these rifles need bedding from some things I've read in Precision Shooting.
Highest score on the USBR? 237, more operator than the gun itself in terms of limitations now.