regular 1# thin (1/4 - 3/8 inch or so) flat bar solder. One type labeled 2-5/8% and the other type labeled No 20.
I figured the 20# at $20 was worth it for solder even if not especially rich solder. But was wondering if anyone was familiar with those labels and had an idea of what they were used for.
I was sort of thinking leaded body work. Low tin for filling and if the No 20 is 20% Sn then that might have been used to tin the body panel before filling. But that is all just a SWAG. Been around 25+ years since I did a small amount of lead body work and don't recall the solders used.
Any ideas on if those numbers are tin percentages and/or what that solder was used for?
I can mix 2 5/8 Sn at 50/50 with WW's for a nice pistol or mild rifle round. Or use as is for HBWC rounds. That is assuming that 2 5/8% was Sn rather than some other alloy. I recall 5% solder but not anything at 2 5/8 percent. That is really low for Sn and an odd amount too. Not 2% not 3% but 2 5/8% rather weird.