In America, 2 pistols stand out in bulls eye shooting (I think both of them are phased out). One of them is S&W 52 - 38 sp wc, the other colt gold cup 38 sp wc.
Both of them extremely accurate, and to maximise accuracy potential both of them were chambered for 38 special wad cutter cartridge, in order to compete on the national matches.
European answer to these, came from Switzerland in early 70ties.
SIG factory designed SIG Hamerli P240, on the platform developed on basis of P210 (most accurate service pistol). To beat everything else in the world, calibers chosen were revolver calibers with rimmed casing. And, Bullet chosen - wad cutter, of course
The parts for this pistol were produced in SIG (Schweizerische
Industrie Gesellschaft ) and barrels were produced in Hamerli.
FInally made, Chambered in 38 special wad cutter, 32 S&W long wad cutter, and 22LR.
Produced from 1975 till 1990.
In caliber 38 sp wad cutter produced only from 1975, till 1979.
Barrel was made with smallest possible tollerances, and the reports came in with barrel bulging when used some of the factory ammo.
The factory, later stopped production of 38 special cal barrels, and issued a reccomendation that pistols in this caliber can be used with GECO factory ammo, 38 special wad cutter. The barrels in other two calibers continued in production.
(Personally I am not aware of any issue with 38 sp wc barrels, above is information collected from various sources)
With these 3 pistols Colt, S&W, Sig Hammerl 240), and their phasing out from production, ends the era of top ranking match pistols in revolver rimmed caliber, 38 special wad cutter. Those three were record breakers of their time, and even today. They still compete healthy, and keep getting medals, Why production of pistols in that chambering stopped globally, after the excellent accuray achieved with them - I really dont know, except that in case of S&W was worn out factory machines. Manufacturing cost for the pistols, is my next guess, and various 9mm, were close with accuracy to them, and easier to produce (???). Maybe.
In any case, purchasing one of those, 2nd hand, for the purpose of bulls eye shooting is good choice, even today.
To date, continues production of pistols in caliber 32 S&W long wad cutter, for example:
Pardini HP in 32 S&W long wad cutter. And the references I got, from national shooting team, is that this small pistol today is considered "the most accurate pistol in the world". End of quote.
Personally I prefer pistol to look like a pistol, and small pardini would not by my choice.
Prices and availability of ammo for high volume shooting, is also consideration, and 9 mm, still ranks high. Any of the pistols I posted earlier, will be good choice for accurate bulls eye shooting.