That wax bullet idea has me thinking. How much power do they have? Could the shotgun primer be used to propel some other type of bullet for small game use?

I mean, if that were the case, something like a .454 Casull or .460 S&W revolver would make for quite a versatile handgun.

Re-loadable shotgun primer powered loads for inexpensive practice and small game shooting. Standard .45 Long Colt loads for most duties. .454 Casull or .460 S&W loads for larger animal defense or hunting.