I have seen the 165gr .30cal grand slam take deer quite swiftly when fired from a .300WSM. Velocity was about 3100fps and they were very accurate also. It was by brother's rifle and load and he also did the shooting I was along and watched a doe get run from stem to stern with one she was D.O.A. Not alot of damage and complete pass through I think it was a good performance. The stores in my area just don't carry alot of them so I buy other brands but I would have no problems using them on most any game including elk or moose.
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hit em' hard and hit'em fast
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