Yeah, the frames on the old H&R's and even the current NEF Shotguns are made of "scinctered iron"....they are not steel at all. Ok for low pressure shotguns and some rifle's, but that's it. Trying it would go beyond dangerous; it would end up a guaranteed distaster. That old 155 with the full forend is a neat version, and low pressure factory loads are adeaquate for anything on this planet, almost, up to 150 yds.