The faster of the 4 you have, the 4895 and the RL-15 are the ones you will have the best luck with. In mine, I settled on IMR 4895 with the 120 ballistic tip. I get 2350 fps or so from a 14 inch contender.
With a 3X9 burris LER scope, I can keep five shots under an inch at 100 yds.
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