Larry, I find your suggestions as most harmful.
There are hundred of thousands guns around of hundred disigns and different bores constructions and you just push some people to shorten their guns life and maybe in several times even.
Every other gun has to be well inspected before using 2 3/4" shells in 2 1/2" chambers and this is the first aand last rule before final decision to use or not to use.

Geno.