typically the bbl O.D. is the same ... so with a smaller bore, ya got more mass, out where ya want it, most!
if yer talkin defensive loads, most folks prefer store-bought, at which, there'll be a better selection of .44!
fer the money, I'd go with a S&W 325 "night guard" and load it with supers! ... ya may very well never get the chance, but if ya did, that'd afford a much faster reload!
otherwise, I'd go with a Montado!
that Taurus .41 tracker don't look bad, neither!
jest chrono'd my 200gr WFNGC .40's in my M&P the other day ... 1,000fps +/-10 ... certainly not .44 mag numbers, but x15rd+1, it beats a poke in the eye with a sharp stick!
![Wink ;)](./images/smilies/icon_e_wink.gif)
... not sure where double tap gets 1,100fps?! ... I doubt the gun'd hold up after more than a few of them?!
![Shocked :shock:](./images/smilies/icon_eek.gif)