Since the plating is pretty much just a wash, not a jacket, and all LR ammo is lubed with either some sort of grease or wax, I don’t know what the harm would be. I’d stick with SV or SS, but for pleasant shooting and accuracy. Have no idea if either of those is limited to SV pressure, but I suppose it’s possible.
Pugs or gnoahhh would be good ones to ask.
I agree that I can't see the bullet coating making any difference. I'd probably stick to standard velocity stuff.
As far as the Mossberg, those plastic trigger guards were bad to shrink. I'd say someone replace their poor fitting or broken original trigger guard with a homemade one.
