If he reloads there are plenty of low pressure low velocity loads in both the Hodgdon site and Alliant site. I use many of these loads in my Damascus barreled guns. You can get loads with 7/8 oz of shot, 1 oz and if you like, even 1 1/8 oz.
I shoot 28 ga. in a modern gun made for today's shells. I used to reload the 28 ga and now still shoot it with factory and some left over reloads. I do believe that the 28 ga. has higher pressures and I don't know what the Side Kicks will do as far as pressure.
If he does not reload, there is a few companies making shells for old guns, and keeping the pressures down, RST is one.
