I SERIOUSLY doubt that 34 GRAMS is the powder charge as opposed to the shot charge. Even 34 GRAINS would be a whale of a charge
34 GRAMS is a 1-1/8oz load
Shotgun hull length is the FIRED length. 70 is 2-3/4, 65 is 2-1/2, 60 is 2"
In other words, is there some kind of potency level I should stay below in order to not run the risk of damaging this little piece of family history?
If so what is the way of identifying this level?
The 16 should have proof marks which will state pressure, maybe payload, and hull size