I've gone with 40 V-MAX's now in my .222 rem. 21.0 of IMR-4198 at just book COL, 2.130 or whatever it is, and lit by a CCI 400 small rifle primer. The primer is the key to this load. Start lower and work up. I've seen some guys getting as high as 21.5 with this combination, but I didn't need to go beyond 21.0 even. Accurate as heck, flat shooter running at about 3,300 fps out of my old Rem 700 BDL's 24" barrel, with fantastic terminal results in the field too!