addendum: I too have seen AA hulls get longitudinal splits in the plastic body, but only in 12 ga. and only when the person loading was using very 'hot' loads, like 1350fps+ in 24gram Bunker loads. Have never had it happen to me w/a 12 nor seen that in a AA28 hull, but mine are limited to 3/4oz. target loads and not being loaded for pheasant, duck or larger game birds. #7.5 is the largest shot size I've ever loaded in a 28ga.
I don't reload AA 12's. I've got a bunch of Remingtons (mostly Gun Clubs) and have no problems with them, so I don't bother with anything that's not green in 12ga--with the exception of Gold Medal hulls which I use for low pressure pheasant loads (around 7,000 psi) using Unique. I only reload 28ga target loads. 3/4 oz, very light load of 20/28 (12.2 grains). If I want heavier/hotter 28ga loads--and I don't use the 28 at all on wild pheasants--I go with factory stuff.
