I have not had good luck with the 100 grain Remingtons. They do not feed all that well in my rifle (a 16 inch Stag 1 in 10 twist) and when chronographed they are not going fast enough to be worth while.
I can get a 90 grain up to 2,900 fps or a 110 to 2550 or so.... The 100s seem to be the odd man out...
I have tried:
26.0 grains AA-1680 = 2,520 fps and a large group, whith feeding problems.
27.0 grains H4198 = 2,646 fps and a 2 inch group with feeding problems
28.5 grains RL-10x =2,455 fps, 2 inch goup wityh feeding problems
28.0 grains IMR 3031=2,336 fps and a 2.75 inch group
30.5 grains H-322 = 2,646 fps and a 5/8 inch group. (good group but not a reliable feeder)
26.2 grains RL-7 = 2,437 fps and a 1.25 inch group,