BravoFoxtrot
FNG
I have a M92 in 300 win. Been messing with the 215 bergers and 212 eldx bullets and h1000 without too much luck. Pretty frustrated with it. I ran through a bunch of loads prior to the season starting and settled with one that shot 2 moa stringing up and down with the occasional flier to make the group 3 moa max. At least it's up and down and not left and right to compound with wind!
The really frustrating part is that the first three shot group I shot with it after getting a new trigger put in it was .3 moa. Thought I was golden and was ecstatic. The next ~7 shot group I shot opened up to ~3", but you could still see the awesome tight grouping where they randomly connected.
I ran through the gamut of checking everything I could think of without improving results. Check out this thread if you're interested (pics on snipers hide):
Cooper Model 92 Load Development
Cooper Model 92 Load Development | Sniper's Hide Forum
My buddy is a multi time national champion long range shooter. I'm going to have him reload for it and shoot the gun, just to take me out of the equation. If that fails, I'll be trying ~180 grain and eventually 168 grain bullets. Cooper said that the 200+ grain bullets are too heavy for the thin barrel.
Another thing to consider when purchasing the M92 is that the brake makes it bark pretty loud. I feel like I'm going deaf even with doubling up on plugs and quality ear muffs. Considering a suppressor or taking the brake off and just shooting 168 grain bullets with the gun, but that defeats the ballistic advantage of shooting a 300 win.
Let me know if you find a load that it likes - I'd like to give it a whirl.
One thing I've definitely learned is that 3 shot groups don't mean anything.
Yep. That sums up my Cooper experience in a nutshell (4 rifles). Lowly 5 shot groups were never near 1/2 MOA on any of them. That applies to most rifles. I’m not saying 1.5 MOA is a bad place to be, but in my experience few rifles are true sub-MOA. Some recent examples for me of true sub-MOA rifles for me (10 shot minimum) are AI AT, AO TMR, three Tikka CTR’s, and a Remington 700 with a Bartlein barrel. Most don’t make the cut. I think anyone can make a 2 MOA rifle look like a 1/2 MOA rifle with a 3 shot group and enough attempts.
Caveat: For most applications, I believe sub 1.5 MOA is more than enough to get the job done.