I can understand why someone might wish to have subguage inserts to shoot 12 ga. shells in a short 10. The 2 7/8" 10 ga. factory loaded shells are always costly and not always readily available. But I think a better solution there is to simply reload 10 ga. shells.

For all other gauges, if I wish to shoot a smaller gauge shell, I will just grab a different gun. The subguage inserts have always sounded like they are more trouble than they're worth, especially to shoot a typically more expensive shell such as a 16, 28, or .410