Seems to me, I've read that low temp silver solders, like Force 44 & the rest, with 5% tin, have up to 30,000psi shear strength in a 1 mil bond. Also, that 50/50 or 70/30 lead solders, commonly used for soldering barrels and ribs for over a hundred years, has a strength in the 15,000 to 25,000 pound range - with a 1 mil bond - which is which or if this is accurate, I do not know. I am only regurgitating what I read - somewhere.

Few joints, as my Dad often told me however, are one mil - which only leaves .0005" clearance on clean metal to metal, which could not quite leave enough room for tinning - would it? Now, with the proper heat and flux, high temp silver would work perfectly, given perfect application.

I can easily see where threads would solve some headaches, but perhaps creat others?

That said, I've never heard of a BPE or Nitro Express set of barrels loosening in their monoblock while only being soldered with lead based solder. Ribs - yes - with poor care and abuse, but monoblocks - never. Maybe I've lead a sheltered life form such occurances?