RedSkyFarm
New member
Hi all. Back again with a question on my recently purchased Marlin MR7 in 25-06. It has a push feed type bolt. I’ve had trouble chambering a few cases. Have one case that doesn’t chamber at all. I feel all have more resistance than normal. These have all been Full length resized. There are marks on the shoulders of the casings that start at the bottom of the neck and go the length of the shoulder to the body. If looking at the case from the mouth end, looks like a star burst pattern. The shoulder in the chamber has these same marks. These marks appear to be “high spots”. Wondering if this was due to tool chatter when it was cut. Wondering how to get rid of these “chatter” marks or if it is even what they are called. Is this what a chamber reamer is for? If so, how does one determine how much to get rid of? I’m sure you don’t want to go too deep. At the same time, don’t want it to be difficult to chamber a round. Can someone one educate me on this and what can done to fix it?
Thanks for any information.
Thanks for any information.