I've been reading and watching videos of the Sig 322. Currently, they sell for 350.00 with a rebate. I have been wanting to get one and it has 20 rd mags before Measure 114 takes into effectFor just general plinking and target shooting, my TX seems to really like Aguila copper plated, both the 40 grain solid point and the 38 grain hollow point, which is fine by me since this ammo is inexpensive and plentiful. But as I mentioned, I really haven't been able to find any ammo that my TX has problems with, and believe me I've tried. It even runs the cheap and dirty ammo like Thunderbolt and Armscor without choking. My advice would be to pick up a few 50-round boxes of ammo from different manufacturers and see how your particular gun likes it and if you are happy with the accuracy. Once you find something both you and your gun like you can invest in bulk of the preferred ammo. I know there's a lot of hate for Taurus out there, but I really think they hit a home run with the TX 22. I've been extremely satisfied with mine. Now the P322, that's a different story. It is VERY picky about the ammo it will run (yes, I know the mags for the 322's need to be properly and very carefully loaded). It's been unreliable since day one, and is about to go back to Sig for the third time. I have some Herter's hollow points that the TX will eat all day long and ask for more, but the P322 can't cycle more than two of them without jamming.
There is a lot of negative about it so I decided not to get one.. Problems like jamming and lead fouling in the barrels. My TX22 has been reliable with most bulk ammo.