Recent content by JR

Re: 208 Amax\'s and tight bores do not mix Yeah, but you're describing a different scenario...236 and .237 are bore diameters, which refer to the diameter of the lands..You will find both the .236 and .237 Krieger barrels hold the same groove diameter for both bore diameters..The difference...

Re: 208 Amax\'s and tight bores do not mix Hard to dismiss the results, no doubt, and I'm not trying to argue the fact. I'm arguin, but mostly with myself, hahah, just trying to get my head around it all. While at HS, we shot every rifle for group. I have seen lapping take many a barrel...

Re: 208 Amax\'s and tight bores do not mix Well if it was relapped and chopped back before measurement of original, to the crown, any of Broughton's merits had been discarded. Doesn't quite sound like there is enough information there to disregard 'tighter' groove diameters, other than you...

Re: 208 Amax\'s and tight bores do not mix You said they cut an inch off the muzzle and recrowned. Perhaps the initial crown was the culprit? Perhaps there wasn't enough barrel cut in the first place to alleviate the bellmouthing caused by the initial lapping procedure? JR

[ QUOTE ] Interesting... I did leave out the reaming of the hole... My bad. I have read of at least one BR shooter who polishes the throat with diamond lapidary compund aver x number of rounds... Instead of trying to do this along with the normal lapping,, could a good, consistant, even...

Actually might be a better idea to 'pull lap' instead of pushing...The driving motion in a push to get the lap started would probably deform the lead worse than if pulling thru. JR

[ QUOTE ] 2 - in my "why not" thread, I proposed an idea that could solve this problem as well. Chamber after gun drilling, before the rifling is cut. Then, machine a "chamber plug" that exactly fits the chamber. With an oversized "cap" on this chamber plug, it could be threaded onto the...

[ QUOTE ] I know that... I just agreed with you... [/ QUOTE ] Ahem...fair enough....payin attention..... JR

Lapping, in it's true form, will remove any left nitriding potential. If you lap after the nitriding process, you will remove the nitriding process, no matter how hard you think it is. JR

AW barrels of past had nitrided chambers after cut. No problems..I would find nitriding after chamber cut necessary in your account.. You are thinking too far outside the box, outside your experience quotient. Lapping a barrel after nitriding would be like negating the process. Cutting the...

[ QUOTE ] Absoloutly true, they aren't as critical. However, nitriding should make the part stronger, and odes not impact the toughness of the substrate, thus the safety concern is at least a null factor. As far as accuracy, that's why I prefer the plasma / ion process over gas or salt bath...

Raceways aren't as critical to tolerance and inherent safety concerns as grooves in a barrel. There are that many nitriding processes, it is something have considered. JR

[ QUOTE ] [ QUOTE ] Jeff Your report is interesting. I just heard today that another company is useing that same CNC process and turning out some great barrels.( Satern Custom machining. )Sounds like a new trend. I think we'll give one a try in .338 7mmRHB [/ QUOTE ] I've never heard of...

"What doesn't shoot them are tight bores like Obermeyer, Krieger etc." Broad statement that? Could you expand a little bit there Deano? Obermeyer runs deeper grooves on some calibres, and his groove circle is not all that tight, he just bore reams shallower than the rest, Krieger runs pretty...

Just some FYI about HS, If you spoke to Todd, that is Tom Houghton Sr's son, so you are at VP level all ready, but the next level up is Tom Jr, then Tom Sr.. If I were you I would phone and ask to speak to Todd again, and tell him to tell you exactly what to do fix this problem. HS should...