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Rifles, Reloading, Optics, Equipment
Gunsmithing
New problem, need expertise!
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<blockquote data-quote="BillR" data-source="post: 327433" data-attributes="member: 462"><p>I've been using a .25-06 AI for a few years now and have never had this problem. I use LC .30-06 brass and neck it down in two stages. First .270 and then .25-06 and then trim to length. I have a tight neck chamber so I have to then turn the necks down to the right thickness and trim to length and then anneal it. I then load it with a load I use in my other .25-06's with a cheap bullet and fire it. Comes out right every time. I do end up with a slight bulge upon resizing from where the old .30-06 neck was just below the .25-06 neck and if I don't get this sized just right I cannot chamber the round. It might be that is the reason I'm not having the bulge problem. The slight bulge helps with the head spacing and keeps it tight against the bolt. The bolt also has a Sako style extractor so that might help also. One thing I did find to be critical though was to anneal the case again after fire forming. If I didn't I ended up with a neck that would not hold the bullet tight. I re-size the case to about .003 smaller than the chamber neck and it works great. Took me a lot of playing around to get everything just right but once I had it all right it shot like a dream with no case problems. Annealing was the secret with this gun. That and getting the case neck thickness just perfect. I have never tried it with .25-06 Factory brass as I have too many .25-06;s to feed to waste the brass on this project and had a ton of old LC once fired .30-06 brass that could be destroyed if it didn't work right. Usually after the second firing the cases once tumbled looked like brand new brass and from then on all I do is neck size them. Something else is that I trim the cases to standard .25-06 case length and I don't really see how with all this you could be off on head space. Great gun and cartridge if you like to tinker.</p></blockquote><p></p>
[QUOTE="BillR, post: 327433, member: 462"] I've been using a .25-06 AI for a few years now and have never had this problem. I use LC .30-06 brass and neck it down in two stages. First .270 and then .25-06 and then trim to length. I have a tight neck chamber so I have to then turn the necks down to the right thickness and trim to length and then anneal it. I then load it with a load I use in my other .25-06's with a cheap bullet and fire it. Comes out right every time. I do end up with a slight bulge upon resizing from where the old .30-06 neck was just below the .25-06 neck and if I don't get this sized just right I cannot chamber the round. It might be that is the reason I'm not having the bulge problem. The slight bulge helps with the head spacing and keeps it tight against the bolt. The bolt also has a Sako style extractor so that might help also. One thing I did find to be critical though was to anneal the case again after fire forming. If I didn't I ended up with a neck that would not hold the bullet tight. I re-size the case to about .003 smaller than the chamber neck and it works great. Took me a lot of playing around to get everything just right but once I had it all right it shot like a dream with no case problems. Annealing was the secret with this gun. That and getting the case neck thickness just perfect. I have never tried it with .25-06 Factory brass as I have too many .25-06;s to feed to waste the brass on this project and had a ton of old LC once fired .30-06 brass that could be destroyed if it didn't work right. Usually after the second firing the cases once tumbled looked like brand new brass and from then on all I do is neck size them. Something else is that I trim the cases to standard .25-06 case length and I don't really see how with all this you could be off on head space. Great gun and cartridge if you like to tinker. [/QUOTE]
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