walnutty Posted December 1, 2013 Share Posted December 1, 2013 (edited) Hi Guys, I was throat reaming my new 1911 9mm barrel to allow longer bullets to seat. This is not the first time I have done this. I have previously successfully reamed a couple of 45 ACP barrels. So last night I proceeded very carefully but I was gifted with a scratched bore--specifically one land was scratched. I'm quite upset. I used a brand-new Manson reamer. I used the proper cutting oil, reamed straight, and used only light pressure. How common in this occurrence? I researched online about this phenomena and it appears that reamers with a solid pilot can cause the lands to get scratched. Please talk sense into me if I'm just over-reacting. Any advise on how to prevent this in the future? Thanks in advance! Edited December 1, 2013 by walnutty Link to comment Share on other sites More sharing options...
ltdmstr Posted December 1, 2013 Share Posted December 1, 2013 I think if it was from the reamer, you'd see the mark all the way around, not on just one. How well did you clean the barrel and reamer before putting the two together? Link to comment Share on other sites More sharing options...
walnutty Posted December 1, 2013 Author Share Posted December 1, 2013 The barrel has been scrubbed and the reamer cleaned with a toothbrush. It was definitely from the reamer. Link to comment Share on other sites More sharing options...
Service Desk Posted December 2, 2013 Share Posted December 2, 2013 Looks like the reamer may have a slightly undersized pilot dimension for that barrel and a little sideways pressure at the opposite side. Link to comment Share on other sites More sharing options...
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