My Belgium Browning .300 Win mag liked those 180 and 200 grain bullets for hunting big game animals. I used those 190 grain Sierra BT for shooting long range targets.

I used to shoot IMR-4831 powder with the 180 grain partitions and they always group well for me. Later on I tried RL-22 and it also did well shooting 180 & 200 grain bullets. My velocity was around the 3,100fps mark.

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