Haven't tried 200's....again, IMO. stretching would be inhibited in the Montana's magwell. 2900 for a 200 might be a feat Ben. Think the heaviest I loaded were some 185 VLD & don't recall the fps....wanted to test some 190 AB's but they never became available during my CDS ballistic run up recipe days. Now a 300 win mag might be a better choice if 200gr is your benchmark.