At about what round count are you guys cleaning your T1X mags at? or is it due to the more greasy ammo like Tac-22?
About 2-3 years ago went to SST/Pins to clean my brass and had a big 25+ year old Lyman 2500 vibrating dry media case cleaner sitting around literally gathering dust.
I had a big box of bungie cords and quite a bit of 3/4" plywood and short 2x12 cut offs laying around so I decided to throw together a ultrasonic cleaner. About 90 minuets later had a pretty good non-heated ultrasonic cleaner that cost me less than $20 to put together.
Have used the C**P out of it with great success for cleaning/de-greasing everything from brand new scope rings, entire rifle bolts, my mags for my P320, S&W Shield, XD45, all kinds of other gun parts, my AR's BCG's, to my full sized HG's and lots of non gun related items.
Use small stainless steel shower organizers I modify to hold parts oriented to allow internal dirt and debris a way to vibrate out.
I use a 50/50 mix of mineral spirits and PB Blaster or my home brew of Big Ed's Red or just strait mineral spirits depending on the application.
Pretty sure would work very well if I invert and submerge my T1X mags and let the ultrasonic motion to its work.