Bill I know of your long-standing frustration with the 35 Rem in the TC. I am a big 35 Rem fan having a tack driver of one in a Marlin lever no less. When I went about having one set up in a TC I was able to learn at the expense of others the headspace issues plaguing it. I had a barrel made by a custom maker, properly headspaced of course, with a rim cut for Krag brass. That Krag brass provides among the biggest, user friendly rims out there. I have an extractor for rimless 35 Rem brass for the barrel also.
I know this is a bit of a wildcat as is the Herret you mentioned. I agree though they represent a practical package: reasonable powder space, 35-40Kpsi pressure, 180-200gr ideal bullet, recoil yes but not too much. There isn't much else in between the 35 cal straightwalls and the 358Win/35 Whelen that is not an even more offbeat wildcat - yeah the JDJ is in there but it starts to get rough. The 35 is a just great stopper. I live in the northeast where the deer run big, the ranges shorter, and the need for a sub-30 cal deer/bear round is not as great. I should think FA would chamber for some good 35 cal hunting round. I understand the need for it to have some reasonable commercial availablity. What exactly it should be I'm just not sure.