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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
260 Rem AI
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<blockquote data-quote="twh731" data-source="post: 954366" data-attributes="member: 53716"><p>I got my new 260 AI Rem. barrel from 4D<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" />. It is a Green Mountain 1:8 twist 26" Chromemoly barrel. Standard dished target crown. I had my receiver timed and trued by SavageShooter<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool :cool:" loading="lazy" data-shortname=":cool:" /> while I was waiting on the barrel to arrive. I have to say I was nervous installing the barrel the first time. I was disturbed b/c the barrel nut would not thread onto the barrel. I tried and tried to screw it on but it would only go on about 2 turns and then get really tight, almost like the threads were different pitch. So I put the barrel between to 2x4's and put them in a large vise. I put some moly grease very lightly on the barrel threads and then bit by bit turned the barrel nut back and forth with the barrel nut wrench, moving gradually up the barrel threads. Once it got all the way thru the barrel nut it went on by hand! I assume that the barrel nut threads were cut with a tap and the barrel threads were cut using a point bit on a lathe therefore they were slightly different profile. Next I put the recoil lug onto the barrel and started screwing the receiver onto the barrel. When I figured it was getting close to the proper headspace I put the bolt into the receiver and put the .308 Go Gauge into the chamber. I closed the bolt and screwed the receiver on until it suddenly wouldn't go any further. I noted where the receiver was indexed on the barrel. Then I place a new Lapua 260 Rem piece of brass into the chamber and screwed the receiver on further until it met resistance. It was about 1/2 turn further onto the barrel than with the Go Gauge in place. I then turned the receiver further onto the barrel (with the brass still in the chamber) while checking the bolt resistance. It was approximately another 10th of a turn until I just couldn't close the bolt onto the cartridge anymore. So I then backed off the receiver until the bolt would close with a good bit of resistance. Sorry, no way to measure it other than by feel. Since it was described to me on this forum as a "crush fit", that was what I was going for. I think I got it. I installed the rest of the kit on the rifle and began to figure out how to load a good fire forming combination. I will describe this part in another post here later. Tom</p></blockquote><p></p>
[QUOTE="twh731, post: 954366, member: 53716"] I got my new 260 AI Rem. barrel from 4D:D. It is a Green Mountain 1:8 twist 26" Chromemoly barrel. Standard dished target crown. I had my receiver timed and trued by SavageShooter:cool: while I was waiting on the barrel to arrive. I have to say I was nervous installing the barrel the first time. I was disturbed b/c the barrel nut would not thread onto the barrel. I tried and tried to screw it on but it would only go on about 2 turns and then get really tight, almost like the threads were different pitch. So I put the barrel between to 2x4's and put them in a large vise. I put some moly grease very lightly on the barrel threads and then bit by bit turned the barrel nut back and forth with the barrel nut wrench, moving gradually up the barrel threads. Once it got all the way thru the barrel nut it went on by hand! I assume that the barrel nut threads were cut with a tap and the barrel threads were cut using a point bit on a lathe therefore they were slightly different profile. Next I put the recoil lug onto the barrel and started screwing the receiver onto the barrel. When I figured it was getting close to the proper headspace I put the bolt into the receiver and put the .308 Go Gauge into the chamber. I closed the bolt and screwed the receiver on until it suddenly wouldn't go any further. I noted where the receiver was indexed on the barrel. Then I place a new Lapua 260 Rem piece of brass into the chamber and screwed the receiver on further until it met resistance. It was about 1/2 turn further onto the barrel than with the Go Gauge in place. I then turned the receiver further onto the barrel (with the brass still in the chamber) while checking the bolt resistance. It was approximately another 10th of a turn until I just couldn't close the bolt onto the cartridge anymore. So I then backed off the receiver until the bolt would close with a good bit of resistance. Sorry, no way to measure it other than by feel. Since it was described to me on this forum as a "crush fit", that was what I was going for. I think I got it. I installed the rest of the kit on the rifle and began to figure out how to load a good fire forming combination. I will describe this part in another post here later. Tom [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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260 Rem AI
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