Most people might suggest the .22 HP is a little "light" for tigers, however didn't Corbet also use a Savage 99 in .22 HP on at least one such beast?

There are a flood of combination guns on the Canadian market using 12 and 16 bore along with 5.6x52R chamberings right now
at tradeexcanada.com. These, of course have .228" groove diameters. I bought one, but in .222 Rem.x12 bore.
some makes have the rifle bl. on the bottom, others on the top bl.