I had, many years ago, a similar pistol but it did not have the saw handle spur at the top of the grip.

It was Belgian, smooth bore and .22 rim-fire. Nowdays it would be a “s.5 Prohibited short firearm”!

I could not decide if it was intended to be used as a Saloon Pistol or as a naturalist’s collection gun.

I share the concern that the action is not strong enough for .22 Hornet factory loads. Perhaps use the milder cast bullet loads?