Does anyone use 1/16-inch cable in either 7x7 or 1x19 configuration for fox?

Yes in 1x19.

I've caught fox in 1/16" 7x7 as well as 1x19 and 5/64" 7x7 it all will work fine my favorite is still 7x7 in either 1/16 or 5/64 but as I've said before try it all and see what works best for you .
In all honesty this is another Ford Chevy or Dodge , which girl is the best looking question that I've been asked more times that you can believe when I've got a table setup at trapping conventions .
I hand them what ever snare they have questions about and let them check it out for themselves .

I go with 7x7 5/64 , I've never got into the 1x stuff at all.
I feel it's to stiff, but just my opinion.

I agree with you Chad , chances are if you do catch a fox in a 1x19 snare it'll be where you set it for a bobcat or coyote and a fox beat them to the snare and tried to jump through the snare loop and it gets hip caught .
At least if the snare is 7x7 cable you have a bit better chance at a neck catch because the slight difference in the snare loop believe it or not in that same situation of setting for a variety of target animals meaning coyote , bobcat or fox if the habitat holds all three .

Take it you're not loading your snares.

Yes, I use and recommend 1/16-inch 7x7 Korean cable for Fox & Bobcat's. Also, if you have the right combination of snare lock, kill spring and cable length. Coyotes can be taken with this cable.

When targeting Coyotes? I prefer 5/64 7x7 cable set up as a dispatch snare. Yes, plenty of Fox & Bobcat's can be caught with the 5/64 7x7 cable. I like snares!!!!

SniperBBB you are correct I don't load my snares as I've said many times on here as well as at many trappers conversations Keith Gregerson and I both load snares by putting them in the back of the outfit to go out to set them . I've showed people that a good support system holding the snare and a quality snare is all you need it's a time saver .

If folks want to load them that fine do whatever it is that you need to feel confident to catch you're target animal .

If you live where you get 30-40 mph winds on a weather front, and set snares on/in open pasture areas with little natural windbreak, you will have more loaded snares dry fired than non loaded ones. The cross section of 1X19 wire's surface is smoother than 7X7 before any coating is applied. Treating/treatment (wax, dip, paint, dye, baking soda, etc.) affects the wire's contact (surface) with the lock. So when someone loads or not loads a snare's surface and compares the 2 PRIOR to the final coating (like at a convention booth) its really not a true test as to which one is "faster" or "easier" or how it might close when exposed to the elements. Been at ths activity for a few years and (even though I'm slow between the ears) field testing/experience trumps the drawing board in My Experience. ................................. the (slower - trying to catch up) mike

Where I'm at at if we got 40mpg winds, a tornado is about to come through. Theres things that can be done to account for wind to keep loaded snares from firing early in the wind. Whether they'll hold up to that much sustained wind that you guys have up there, I dont know. Lock positioning, kinking the loop, running the lock tight to the support, etc.

Well fella's come on up to Montana we just had wind storms with wind speeds up to a 180 mph , which yes that will knock down snare loops no matter what cable or snare combination you use .

I've ran up to 450 snares in,all sorts of conditions in south eastern and now Central Montana , as if you have ever read my posts on how I prepare my snares I boil them in baking soda and non chlorine water . I don't paint or dye snares other than what may happen when and if I drop some sage brush leaves or juniper in a Ziploc bag .

I use the same snare supports I sell at trappers conventions and I've been at this game the majority of my life and taught snare making and setting at the MTA Youth Trappers Camp yes in Montana which has won National acclaim for teaching kids the proper and ethical way to harvest and care for their catch .

So yes I guess I may have well over 40 year's experience trapping and snaring in areas of wide open grass lands or sagebrush flats to rough breaks and the mountains and have gone out one the snare line with customers who have bought shares from me and showed them what I do that's a bit different than what they do , case in point I reset 6 snares for Gene along the fence between two properties in deep snow we came back 2 days later and we had 4 coyotes waiting dead in the snow ! Gene speaks rather highly of me and my abilities .

Another customer of mine had coyote snares set down a coulee on a ranch here in Central back in the winter of 2017 when we received over 170" of measureable snow and wind speeds of 70+ mph it wasn't until June when the 20' deep snow drifts melted so he could get his snares , I've dug through 4' of snow to get a coyote out of a snare set in a 2 day check .

It doesn't matter one way or the other if you believe it or not all the above in this post is true Paul was active on here until his work and main income changed to where he's to busy to stop in and say hello . Gene thinks that computers are practically black magic ha ha and he isn't on here .

Merry Christmas and Happy New Year !!!

1x19 5\64 is what I use for about everything. I may have a dozen 1x19 3\32 for special areas but not used for fox just coyote

I use 1X19 1/16" dia. cable in my Rams w/o any problems for coyotes to coons to beaver to fox and badgers. I use the snare twisted to 17-18 ga. support wire (learned here on the web) matched with a Lance trigger and catch rabbits to pheasants every year with them. Have since 2003. Don't know if you would call that "loaded" as the snare's original memory is not altered. Probably not a relevant test. Used bent washer and keiflock type snares since 1972 (different locks as they became available) since 1972. Have and still use regular homemade cam lock non loaded snares with certain times drifting to load a few so Allan's experience mirrors mine. Not any benefit either way for me so to be the "lazy guy" title I deserve, I continue to adjust just the support wire and not the memory for the target species and what I want in a snare loop. ............................ the mike

If we could use rams or spring snares, well i can for nuisance work, i wouldnt worry about loaded snares either.