I never could get the 180s to shoot with any accuracy out of mine. Here's some data for you:
20.0 grs SR4759-158gr JHP Winchester bullet- .75" group at 50 yds
25.0 grs 2400- 158 grs JHP Winchester bullet- 1.5" group at 50 yds
39.0 grs 748- 200 gr Remington bullet- .5" at 50 yds
33.0 grs IMR 4064- 250 gr Winchester bullet- one hole group at 50 yds.
The 748 load has a brilliant muzzle flash
so be aware. The 250 gr Winchester bullets I don't think are available to the reloader anymore.
From the Thomson Center reloading manual:
32.0 grs IMR4198- 158JHP Sierra- 2195'ps max load
32.0 grs IMR4198- 170 FMJ Sierra-2307'ps max load
27.5 grs H4227- 200 gr Sierra RN- 1959'ps max load
I have never seen a 170 Sierra but it's in the book. The velocitys listed are for a 14" barrel. Yes, the data for powder is the same for the 158 and 170 bullets. Hope this helps.
Trapper