Have either of you any experience with the .40cal HiPower? I'm a huge fan of the 9mm version, but never had a chance to try the .40.
It’s pretty much what you’d expect - a bit more felt recoil, more muzzle flip, a little heavier, but pretty much the same weapon.
Unfortunately, then you get to the downsides of the .40 BHP, and that’s magazines. Stock flush fit .40 mags only hold 10 rounds, which means you give up three rounds right off the bat. The 15 and 17 round Mec-Gar/Military contract/Argentine mags in 9mm have no .40 counterparts, so that’s even more of a disadvantage. Finally, there are dimensional differences between some parts of the .40s and the 9mms, so there’s a parts issue there, too.
If you like .40 and you like the HP (and shoot it well), there are worse options you could choose. However, most people seem to be of the opinion that the .40 BHP is not the happiest marriage of caliber and weapon and that BHPs are best in 9mm.