good tip about small ring mausers ThanksMany rear entry wrenches are made so that they bear along the raceway and if the receiver is particularly tight, they can twist. Those which do not bear on the rails at all, must be made of a decent material (not mild steel) or the shaft of the wrench will simply twist. I made one with heat treated 4140 and on a really tight one, it will twist quite a ways until the receiver comes loose with a bang! With the port entry wrench (18 inches long and made from 1x2 key stock) I can set the wrench in place and give it a whack with a 3lb hammer.
When an action is real tight, either wrench puts a lot of stress on the receiver but they can take it OK. Small ring Mausers cannot take it and one must use an outside wrench on these; with a mandrel inside to prevent crushing of the receiver ring. WH
Exactly my thought, except I would probably try a propane torch. To date I've only ever removed barrels that were installed by gunsmiths - well lubricated threads and not excessively tightened down so I've not had an issue.I always use a heat ( hot air gun ) gun and heat the threaded area up ( about 45 minutes ) till I see the thread compound turn whiteish in the scope base hole. Makes it a lot easier to remove barrel.
I also use an action wrench like in the picture, but made it myself.
Tarey
I have found that by the time you get enough heat on a really tight barrel you may damage the receiver. That is why I relief cut them off. I once took several junk actions and played around with just what it took to twist or otherwise do noticeable damage. A lot of heat will mess one up. Usually you cant get it to move without a lot of heat. 47 years at this and I found heat to not be the answer, not for this anyways. Exhaust manifold bolts, rusty nuts sure, precision gun parts and expensive receivers....nope. Nazi Germany must have used gorillas with a 10 foot bar to put some Mauser 98's together...crazy.Just curious, but is there any reason not to put some heat to the receiver to get the barrel to loosen?
I agree with Will and Jackie, a properly fit port wrench works when properly applied. I've been using a port wrench on 700s since '92 without issued. A good barrel vise is just as important. I've been using the same one that was a "required" when I went to school ('91-'93). Uses bushings and has a 4 bolt top to bottom with 1/2" bolts. Solidly mounted, the only ones needing a relief cut are P14s, M1917s, and the Howa, the Howa only sometimes. Most all the other wrenches and vises I've looked at appear to be hobby stuff. I have made several rear entry wrenches for installing barrels on custom actions, but I'd not consider using one to remove a factory installed barrel from a factory action. By the way, no heat required or needed.......You may or may not be able to remove the action with a port entry wrench BUT you must be sure the wrench does not bear on the rails of the action. These rails are very thin and I have seen a half dozen which have been cracked by an improperly seated or poorly fitting wrench. I had one wrench which was made to work on both left hand and right hand actions and it would bear on the rail. I could see the potential for a wreck so I removed the left hand end and made another wrench for LH actions. By the way, I use the port entry wrench for removing factory barrels and have had no issues doing so. WH