Personally I like the rst shells because they are factory available in 7/8 and even 3/4 oz loads for higher volume shooting. leaving relative pressures aside, these definitely lower the wear and tear on the gun and body.

The lower pressure (equates to lower velocity and lighter payload) are much better for 100 year old stocks. I don't worry about the metal, but some of the stocks can't take a heavy pounding. I reload 2 3/4" and 2 1/2" shells for clays and for birds. No problems when you keep the loads "friendly".

I believe RST sold out of the 16g online last week. I think they still have .410 shells if anyone is looking for them.