Well.....the Olympic guys have weighed in heavily with Euro pistols in 32 Long that, despite their expense, are probably cheaper than a modded Ruger. It is not what can be done, but rather what is reasonable to do...and what the winners are doing.
I suspect the guys who are making the Walthers and Hammerlis and similar dedicated target pistols used by such shooters are having the last laugh. Factory support and spare parts are helpful.