Hey Bohunter, I have a 20" heavy barrel Oly Arms upper in .25 wssm. My rifle shoots 3/4 inch groups at 100 yards if I do my part. You can shoot bullets from 75 grains all the way up around the 120 mark. I shoot 75 grain Hornady Vmaxes at around 3450 fps and it absolutely devastates coyotes. If I were going to hunt deer with it, I would load up some softpoints around the 100 grain mark. They are more than enough to kill any deer that God has placed on this earth. I have been a fan of the 25-06 for a long time and this is basically a 25-06 in an AR platform. I am very happy with mine and if you like the 25-06's performance, you will be pleased with the WSSM.
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Thanks, Dustin.