What is the correct way to break in a new rifle? I have never owned a new rifle and this is new to me. Should I just reload some crap loads and go shoot 20 or so? This is for my 300 Ultra mag so 20 rounds might be it for the day.
I have an old Mark X with a douglas barrel in .243 that shoots 3/8 " groups at 100 yds broke in as described.Haven't shot it in a while.got out of the bean field and into the woods ruger ,.44 mag carbine is my deer medicine nowdays.
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