Thanks for chiming in Steve. I ran the numbers on the 124gr in and if I can push 3000fps (and I think it will if Quickload is even remotely close) Hopefully the rifle will cooperate, maybe even a little better than that. 3000fps muzzle would give a usable range of out to about 700yds in that application keeping the 1800fps minimum. That should work well for the intended application. It also leaves energy in the 1000ft/lb range at that distance. The way these solids work, I'm not sure that that is really the iron clad critical number often touted. Putting the bullet where it belongs is most important then second having terminal performance is second to that. These Hammers should do both of those jobs well.
It's interesting that your BC results back up what I was quoting from Litz. If I can get some more confidence in these, my son might inherit this Kimber and a second one I have may get a faster twist barrel, 7 or even a 6.5. It sounds like using the faster twists is all positive with these bullets.
I'll have to look at the 7mm options for further out/bigger stuff. Quickly running some numbers on that shows that you should be able to get to 1K and keep the 1800fps if done properly.
It looks like Cutting Edge is gaining a bit of BC with their tipped versions. Have you looked an that option by chance Steve?
My poor Marlin just winced in the safe as I read that 1800fps minimum. Had to reassure her that it was only for those lesser-smaller bullets and that it didn't apply to the 45/70 as I read further in Steve's post. Reassured that there were several options for feeding slow and fat.