22 PPC for 77-80 Grain bullets?

[SF-Guy]

I have a 22 PPC Shilen with a Bartlein 28 inch 1:8" twist. It should shoot the 77 and 80 grain bullets well but i have not found the sweet spot. Sierra 69's and 75's shoot terrific at 200 but i would not shoot them at 600 due to the wind drift.
I shoot iron sights on this rifle and need to find a load that will work for 600 yd NRA style shooting.

Thanks

 

[DRNewcomb]

Are your bullets molly coated?

 

[SHall]

SF-Guy,
You may want to try this post in another heading: "Small Stuff, 17,20,22 calibers" I think it is. I am interested in this also. Samuel Hall