Home Forums Hunting & Shooting Hunting Rifles Kimber woes...chamber issue??

Purchased this Kimber Montana 280AI and was able to get to the range today. Fired 30shots total (all reloads with new Nosler factory 2nds brass), some checking for pressure and a few under max loads. Shot well with the bullets/powders combo I had on hand. What got me was how the fired brass looked when ejected. There's a visible ring around the body/shoulder area that looks and feels like when you score/cut copper pipe with a pipe cutter. I can feel the groove when running my finger nails thru it. The PO sent a box of 1x fired factory brass (16 Hornady/4 Nosler) with it and all those brass have the same marks.

I guess a bad/worn reamer was used or a chip got lodged when the chamber was cut? I'm the 3rd owner and way past Kimber's warranty period. So I'm not sure if Kimber will do anything. I'll give Kimber a call tomorrow or next week. Maybe have a smith set back the barrel and clean up the chamber.




Pics of 1x fired Hornady brass




Nosler factory 2nds brass, 1x fired Nosler and 1x fired Hornady brass




Target pics with 120gr Nosler B-tips and 150gr Lapua Scenars at 100yds