Only trouble with the .22 HP - is the .228" bullet size.
If set up for .224" bullets, great!

Here's one. Buffalo Arms 55gr .228 bullet

another quote from a forum:

Buffalo Arms makes 45 grain and 60 grain .228 bullets for the 22 Hi Power

There are lots of combo guns available from tradeexcanada in .22 HP,. Tradeexcanada has some .228's for sale. They are quite expensive. $64.00 per 100 and they are out of stock, of course.