Wall thickness relative to frame size

[Gary Laudermilch]

My P grade 1 frame 12 with twist barrels were measured by Mr. Hosford. He recorded .115 at the end of chambers, .090 in front of the forcing cone, and a min. wall thickness of .031 and .032. He also commented that they were one of the most uniform sets of barrels he ever measured.

[Bill Murphy]

I would check that .020 measurement against other guns known to be original #1 frame barrels.