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I presume you're talking about subsonic use.
The 220 grain is my choice for a 300wtf in a 2.28" magazine (AR-15) The 240 SMK is just too long
The 240 grain is my choice for a 300wtf in a longer magazine. More mass and higher BC = more deliverd energy and less wind deflection.
My favorite SMK however is the .338 300 grain. It's suitable for a 338 BR in a Rem SA subsonic. Also for a 338 Win Mag and 338 Norma Mag in a Rem 700 LA for a bit more velocity and range.
Last edited by LouBoyd; 06-08-2011 at 07:39 PM.
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