I am waiting on my form 4 and am looking to stock up on a few thousand rounds of subsonic ammo. I will be shooting a 17 with a Lone Wolf threaded barrel and decided to go with the SWR Trident. I have heard that when using cans on pistols there can be some significant baffle erosion due to some factors that include the shorter barrel (as compared to a sub gun or 9mm AR etc..) and that ammo choice is particularly important. The erosion seems to be occuring on the second and third baffles I believe, I know the first baffle (blast baffle) is stainless and the others are aluminum. I have heard that Winchester WinClean ammo is possibly a severe offender in this regard. I was leaning towards the Winchester Super-X Unleaded 147gr with the fully encapsulated bullet, or brass enclosed base as they call it, until I read somewhere that this is basically the same as WinClean. I am trying to stay away from anything that has lead exposed at the base of the bullet (ie Special K, and most all other 147gr offered by the major manufacturers) because I know that cleaning lead deposits out of a sealed can is next to impossible. So what subsonic ammo is the best all around performer, and wont chew up my baffles? As long as it is subsonic, a few decibels either way is less important to me than making sure my can has a long, healthy life. Thanks in advance for your replies!