I am going to be working up some loads with the 370 grain North Fork FPS and CPS bullets for my 416 Rigby. Other components are Norma Brass and Fed 215M primers. For those of you with some experience with these bullets in this cartridge, do you have better results when you seat the bullet to the first crimping groove (first when coming from the nose of the bullet) or seating them furthur out? Since I can use only French (Tubal 8000 or SP12) and Vihta powders (N165 would be my choice)my question is more about potential feeding problems rather than seating depth with respect to ballistic results with American powders.

I just looked, mine are 3.700 oAL which is about the second groove on the bullet. Mine will group into 1/2 in. or less (smallest .256) with 105 grains of H4831SC for 2550 fps. They feed very well. Mine is a bit more tempermental feeding with the FP north forks with regard to OAL.

Wink,

If your rifle was not "set up" to need the FPS or CPS they may or may not feed. Load up a few dummy rounds, I would start seating @ the last/first (closest to nose of bullet) crimp groove and find what works, if possible.

I had one CZ that would not feed the FN bullets, on my 416 Rigby I had Roger Ferrell adjust the feeding specifically for the CPS and after Roger's adjustments all worked just fine.

Good luck...