Is this a new rifle? Are the action screws torqued?
Mine (an FCP-K) will shoot 168-180 gr just fine, at least after I learned how to get behind the gun, load the bipod, breathe, etc. I also had to learn to adjust the parallax correctly. At 100 yards, I suspect some kind of a scope or loose action screw problem, but I hope some of the more experienced people here respond.
I bet you can find the problem and get it running fine in no time.
Joe
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