Mtn.Hunter,
1 1/2"-2" groups witht the 175's is definetly acceptable @ 100yds with the 150gr. powder charge.
I'll be you that the 195's will shoot even tighter groups for you. Have you had a chance to try them? I think I purchased mine through Natchez.
I would be happy with my 45cal Omega if it shot that well.
How long have you had your Black Diamond?

Underclocked:
I know that the 45 will never be a .243, but I want to squeeze as much out of the 45 as I can. It gives me a new challenge. My 50's are all sighted in and ready to go.
My son and I are hopefully going to go antelope hunting this fall in Wyoming. If I can get the 45 shooting accurately, I want to be able to take it along with us.
I'll leave the .243 at home!
Thanks guys!
Keep it in the 10X
mac454