Tim, I have a question for you about neck reaming. I have been making 7.62X25 brass from .223 range pickups and I need to turn the necks to get the case neck thickness correct. I've seen where people have used an inside neck reamer to do the same thing but in reading up on the use of a neck reamer it basically implies that the case that is to be neck reamed must be a fired case. I can't load and fire a case that's got a neck that's too thick to chamber. Neck reamers don't seem to be made in different sizes to allow a new formed case to be neck reamed before they can be fired so is my only choice being neck turning? I had thought about making an expander ball to open the unfired case necks to what I would normally have on an actual fired case but I'm not sure that would work. Have you ever neck reamed newly formed cases and how did you do it?
Last Edit: Aug 12, 2015 10:56:33 GMT -5 by 22boomer
Ive reamed a bunch of cases inside and out. Last ones were the batch of 22 U Z i first did. If you size cases first, u can get proper size inside reamer to compensate for neck expansion. Or just do outside turning.
I guess I'll stick with outside neck turning. When I do .223 cases to use for 7.62X25 Tok cases the necks are why to thick to chamber and the only inside reamer I could find was actually something like .311. The next size inside reamers were either to small or to large to work for me. I guess I stay with what I know works.