I have had Marlins and shot them all the time when I was a kid. The 1897 Win was another popular gun when I was a kid. They weren't collectors items back then, they were cheap. It seems like it was common knowledge as far as what was a good one vs bad
on. I had never herd of blow ups from ammo. Do remember some lock failed and blew open. Both Marlins and Win hammer pumps
were dangerous guns as far as safety when they were worn. Guns in top condition caused no problems. The only hammer gun I have
today is a late production 1897 Win made in 50s. Tight as day bought and hasn't been broke in yet. I shoot 23/4" mags in it. It was
a salvaged Bubba gun and now has screw in chokes, my gobble gun. The Win auto had no bolt handle, had knurled portion on barrel
to cock it. Never popular Browning A5 put in out of business. Win has never had a successful auto shotgun, JMB gave them 1st shot
at the A5 and they turned it down.
Most trouble I have seen with vintage shot guns is smokeless loads in Damacus, modern 23/4" shells in the old short chambers and
idiots shooting guns that are worn out. If they are good tight guns in good repair I am not afraid to shoot them with standard loads.