Originally Posted by DaveB
I was looking at a few Spanish 20 gauges. I don’t know anything about Spanish guns, so I figured I would ask. The flats were marked for 20/70 chambers and 900 KGS. Is this proof level safe to use with modern American 2 3/4” loads?

If the barrels are in good condición there would be no problem to shot 70 mm cartridges.

28 ga, hammerguns and all shotguns and rifles made by hands.
Waidmannsheil 🌿📯