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Got a nice picatinny scope mount for one of my .308 rifles.
Got the old rear mount off with just a little heat. But the front mount won’t budge even with flame applied for a minute.
Broke three Allen key style Torxs, two Torx bits, and bent three Torx T10 impact bits. (No impact gun used. YET!)
It seems it’s a known issue that they come over tightened. So now I’m afraid of shearing off the heads. At least they are good screws, no stripping so far.
I applied 3-1 penetrating oil from the bottom, inside the receiver, and left upside down over night. Still just bending the bits.
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Keeping my eye out for a rod I can heat red and appply to the top of the screw, let it transfer then try again. No gun smiths left in the city either. Mayor chased them out with new bylaws and rules a couple decades back.