There is actually only one 'right' method to check long cases in short chambers. Just load lead caliber slug in long case and fire it through your gun with short chambers. If fired case, its throat looks not good or broken, these particular cases are not suitable for this gun.
Actually I don't care about peak pressures, light or hot loads and Sherman Bell article, but if cases throat is damaged or broken after slug firing, I'd suggest to stay away from these cases or cut them to right length.

Geno.