When I read post # 26 stating it was a 270 Win. I got a Cold Creepy Feeling. The first thing I thought was did someone put a 308 Win., Federal 338 or 7MM-08 shell in the 270 Win. rifle and fire it. I was going to ask when he got the shell head out of the bolt if he could read the caliper. When I got to post #32 there was the answer.
In my career as a field Wildlife Officer for 17 years and 17 1/2 years as Regional Training/ Hunter Education Sgt. I investigated many incidents of 308 Win. shells put in the wrong chamber. District 3 at French Creek WV had a Pre 64 Mod. 70 Win. custom barreled to 25-06. in 40 some pieces of wood and metal. The receiver was split through the front scope screw holes, The bolt lugs held, In a shadow box display. I seen another 25-06 blew up by a 308 Win shell that would have killed the shooter except for fate. He forgot his hat going to the range, Hot day, Sweat was dripping in his eyes. He had a towel in the vehicle and rolled it up and put it around his head. There was a piece of metal blew out of the action and was caught deep in the towel. If not for the towel it would have went through his forehead. DRT.
When I taught Hunter Education classes in the Ammo Section I always discussed the dangers of 308 Win. Ammo in 25-06 Rem. 270 Win. 280 Rem/7mm Rem. Express chambers. The book only shows the 20 ga. shell 12 ga. shotgun danger.
With 338 WM and Weatherby's 6.5/300 mag. Win. WSM and Rem. SAUM and Rem UM cartridges, Could be a problem. I want to do some study and tests before the fall classes start.
The pressure that barrel and action has been exposed to, Remove any good parts, Trigger, barrel Lug, Bolt handle?, stock and do the unspeakable to the action. Would be the safest thing.