Archie Otteson Posted January 19, 2020 Report Share Posted January 19, 2020 I Built my first DPMS pattern lower and bought a .308 upper from KM Tactical at bargain basement cost. Yeah I know, ya get what ya pay for..... Went to range with 1 box "Hornady American Whitetail165gr. Interlock" factory ammo. I am using SR25 type magazines. Functions perfectly with mild recoil. Groups were more of a spread (3"@50yds) but I was shooting for break-in and function test not pinpoint accuracy. Anyways, I'm getting these dimples on all the case necks and some occasional dents and scrapes on the fired cases. You guys see this a lot? Does this need to be corrected? Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 19, 2020 Report Share Posted January 19, 2020 What brand is the barrel, and what's the chamber look like? Able to get in there close enough with a small flashlight and check it out? Quote Link to comment Share on other sites More sharing options...
Archie Otteson Posted January 19, 2020 Author Report Share Posted January 19, 2020 I just finished reading your post on aftermarket .308 parts and problems with mismatched gas and recoil systems. I bought a complete upper so I don't know the barrel manufacturer. KM Tactical had like 40+ on hand so I figure they bought out a liquidation or something, but maybe not. I don't see anything in the chamber that might cause this issue. I did clean the bore and chamber before the first shots. I was thinking the marks might be a magazine or feed ramp issue but I don't know that. . Quote Link to comment Share on other sites More sharing options...
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