Re: .243 starting point
The .243 is a fun, accurate and user friendly round. It makes a great "learning" rifle that won't break the bank or make you and your wallet flinch every time you pull the trigger.
I have one in the Win70 HVB configuration and it is a pleasure to shoot. Mine shoots the V-Max weight's (65, 75, 87) that I have tried into .4", no matter what I do. I mean that's pretty good but I can't get that bullet to print any tighter.
The 90 and 95gn Ballistic Tip's run in the .2's and .3's. Not really alot of difference between .2 and .4", but it helps me.
My rifle shoots the 85gn great also. A suprising (to me!) bullet that turned out VERY accurate was the 85gn GameKing HPBT. This thing prints bug holes at 100yds and last time I tried it @ 500yds I printed a 2.366". This was with IMR3031 (37.5gn) & BR2's.
Great accuracy with VihtN560 (44.0gn), BR2's and the 95gn Ballistic Tip. This load prints in the .2's at 100yds and I gased whistle-pigs at 600yds in Virginia with this load. Very accurate and consistent.
None of these loads showed over-pressure signs in my rifle but yours may show a big difference. Be careful and enjoy. JohnnyK.