Interesting description on the Cabela's website. Says they are low pressure and then says they are safe in any gun that can fire modern trap loads.
I'll probably buy some just because it is available in 28 gauge and there are few choices in that gauge, for modern guns or otherwise.
Here's the description:
Pull that fine side-by-side or vintage pump gun out of the cabinet and get it back in the field. A safe, nontoxic alternative for older shotguns, this low-pressure, low-recoil ammo has 44% more energy than comparable steel loads, yet it's as soft as lead for the protection of barrels and fixed chokes. Buffered loads and sealed hulls ensure optimum all-weather performance. For use in any firearm that can safely fire modern lead trap loads. Shells are available for the specific needs of upland hunts. 10 shells per box. 10 boxes per case.
And the link:
Cabelas Hevi-Shot Classic Doubles
