Okay the questions first since the explanation and excuses are rather convoluted.
Will a 280AI reamer clean up a 7mm/08 chamber that was run too deep? If so that is all the info I need. If not will a 7 RM clean up a 280AI chamber?
First off I am not sure what kind of brain fart I had that ruined my evening in the shop but upon much thought may have stumbled upon the answer. I built basicly a tailstock DRO that lets me know haw far I have gone in with a reamer. I always park my carrage when reaming and always run the tailstock to the carriage and use the feed wheel to run the reamer in. After my first pass I measure to get a rough estimate of how far I need to run the reamer in, then zero my measuring device. I usually stop and use a guage when I get to .100 of correct headspace. Well last night I guess I had a brain fart and moved the freakin carriage toward the headstock during this operation. I do not recall doing it but upon much recollection find this to be the most plausible answer. If I had hit the zero button on my indicator during one of the pull outs to clean chips I would probably have noticed. Anyway when I reached what I assumed would be .100 short I grabbed my go guage and that sucker went outta sight in the hole. I was like WTF did I do?
No problem I have been wanting to build a 280 ackley for myself but this was not my barrel. So I jump on the phone and call Don geraci. He has a barrel that will be a better than suitable replacement. I call the barrel owner he consents to the swap, he is getting a kreiger rather than a pacnor now. I grab a long action and measure everything and make a couple of adjustments to make sure that my clearance to the front of the lugs is correct. Then I run the 280AI reamer in and headspace it. I am only .250 short, that is how much too far I ran the 7mm/08 reamer. I put my indicator in and everything runs true and looks great, life is good. I turn the barrel around cut and crown it, then put it in the blast cabinet and then tightened it on the action. I put the barreled action on the shelf waiting on a stock and move on.
When I woke up this morning I start having this nagging thought even though this chamber looks perfect, did the 7mm/08 reamer which was run too deep open the base of the chamber oversize? This is something I did not consider last night. I guess I was just tired. Am I going to be able to size my cases with my dies? Are the cases going to bulge our in front of the webbing? If so will a 7RM clean that chamber up? All these questions start popping in my head when I am away from anything gun related.
I ran a 6x284 reamer .007 too deep one time and thought I probably held the record for running a reamer too deep. I now have cemented my title as the guy who ran a reamer the furthest too far.
I have a magnum action laying around and it would only take a little time to run the 7RM reamer in, but I would rather have the .280AI since I cut the barrel at 25 inches. I cannot for the life of me picture in my mind a 280 case against a 7RM case to determine whether the 7RM is long enough to clean the 280AI chamber up.
Will a 280AI reamer clean up a 7mm/08 chamber that was run too deep? If so that is all the info I need. If not will a 7 RM clean up a 280AI chamber?
First off I am not sure what kind of brain fart I had that ruined my evening in the shop but upon much thought may have stumbled upon the answer. I built basicly a tailstock DRO that lets me know haw far I have gone in with a reamer. I always park my carrage when reaming and always run the tailstock to the carriage and use the feed wheel to run the reamer in. After my first pass I measure to get a rough estimate of how far I need to run the reamer in, then zero my measuring device. I usually stop and use a guage when I get to .100 of correct headspace. Well last night I guess I had a brain fart and moved the freakin carriage toward the headstock during this operation. I do not recall doing it but upon much recollection find this to be the most plausible answer. If I had hit the zero button on my indicator during one of the pull outs to clean chips I would probably have noticed. Anyway when I reached what I assumed would be .100 short I grabbed my go guage and that sucker went outta sight in the hole. I was like WTF did I do?
No problem I have been wanting to build a 280 ackley for myself but this was not my barrel. So I jump on the phone and call Don geraci. He has a barrel that will be a better than suitable replacement. I call the barrel owner he consents to the swap, he is getting a kreiger rather than a pacnor now. I grab a long action and measure everything and make a couple of adjustments to make sure that my clearance to the front of the lugs is correct. Then I run the 280AI reamer in and headspace it. I am only .250 short, that is how much too far I ran the 7mm/08 reamer. I put my indicator in and everything runs true and looks great, life is good. I turn the barrel around cut and crown it, then put it in the blast cabinet and then tightened it on the action. I put the barreled action on the shelf waiting on a stock and move on.
When I woke up this morning I start having this nagging thought even though this chamber looks perfect, did the 7mm/08 reamer which was run too deep open the base of the chamber oversize? This is something I did not consider last night. I guess I was just tired. Am I going to be able to size my cases with my dies? Are the cases going to bulge our in front of the webbing? If so will a 7RM clean that chamber up? All these questions start popping in my head when I am away from anything gun related.
I ran a 6x284 reamer .007 too deep one time and thought I probably held the record for running a reamer too deep. I now have cemented my title as the guy who ran a reamer the furthest too far.
I have a magnum action laying around and it would only take a little time to run the 7RM reamer in, but I would rather have the .280AI since I cut the barrel at 25 inches. I cannot for the life of me picture in my mind a 280 case against a 7RM case to determine whether the 7RM is long enough to clean the 280AI chamber up.
