im thinking of gettind .40 and .357 sig barreks fitted for my Delta. i have a 357 sig barrel for my Sig 229. im not much a fan of switch caliber guns but when its a simple switch and dosent have to change anything but the barrel on the Sig.

to the OP, im a fan of the Delta ( i understand Colt is coming out with a new one) or the Glock 20

in revo, as mentioned a 610 can easily shoot both calibers.