Here is my current .32 S&W long target semi auto, it's a FAS model 603, made in Italy, brought from a shooter from the left coast several years ago sight unseen. Its a top loader, mag insert from top, mounting a red dot sight like the Ultra dot will be a problem, therefore a Burris Fastfire 3 is being use for the time being.
Like many other Italian pistol this one has excellent roll trigger and take down is a breeze, undo one lever, and the pistol break down in seconds, weight in at 47 oz. empty, much heavier than the .22 model 602.
As other has mentioned .32 are fun to shoot and quite accurate as well, and if you cast your own bullet and reload, it cost not much more then shooting .22, my go to load for the .32 S&W long is either 1.8 gr of Titegroup or 1.7 gr. W231 for 98 gr. wadcutter bullet, a pound of powder can last a long time.
I also has been on the look out for a K 32, but the few I've seen are priced at collector item range, while all I need is a shooter grade gun, and speaking of revolver, if one decided to use one in bullseye match, a model 14 can work out just fine, myself prefer a semi auto, don't think thumb cocking at the rapid fire stage will work out too good for me.
I've suggest the OP look for a Walther GSP, reason being they are fairly common in the bullseye circle, parts are still obtainable and don't forget the frame of a GSP can accept either a .22LR or .32 S&W long top unit, flip one lever, take out the barrel unit, replace with the other calibre, insert the proper mag and you're ready. $1200-$1300 would a bargain for a frame with both .22 and .32 top unit and 2 mag for each calibre. $1500 and up should get a pistol with factory accessories like sight adjustment tool; case...etc. look for them in the bullseye shooting site buy and sale section.
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Good luck.