Re: Help on dented brass - FNAR
I have found that if you decide to reload AND you find the right "recipe" for the FNAR, that the brass deformation will decrease dramatically.
When I first purchased mine, 2 years ago, I shot the
Winchester 7.62mm 147gr. FMJ. I was at times shooting MOA accuracy out to 300 yards, but the deformation rate of my brass was over 65%. Switching over to the 168 Gold Metal Match, my accuracy increased and deformation rate went down to about 40%. I had begun to catch my brass in a homemade net and base, to try and eliminate other factors, when i decided to build a dedicated hunting round for this rifle.
My shooting partner and reloader likes to find the heaviest bullet each barrel can stabilize and shoot accurately at distance. With the 20" barrel and 1 in 12 twist we found a 180 gr. sierra round nose loaded with Power Pro 2000 at a modest 2450 fps, produced MOA groups consistently out to 300 yards, AND a deformation rate of about 25%. For the deer hunting I do in south central alabama, it has proven to be an extremely deadly round. (We have since tried the 180gr. SierraGameKing SBT and had a little tighter groups, but no history of hunting results as of this writing.)
I believe that "hotter" rounds fired in the FNAR will produce more case deformation than slower rounds with a medium powder burn rate. Just a thought!