[Brett Trimble]

I have several boxes of older Polywad 2.5in 16ga shells, 28grams (1oz) of #6 shot, 2 3/4 dram eq.

Are these safe for an early 20th century LeFever side plate gun with fluid steel barrels in good condition?

My guess is that these shells are probably near 10k psi, but I may be off..

Any knowledge and or opinions?

Best,
Brett