Plainsman, I dont know of a " named wildcat " like that but it could be done quite easy.
It would have alot less powder capacity than a 30-30, more like a 300 whisper.
If I were going to make that combination I would shorten a 300 Savage die by around .600 and form it on the 44 mag case. You would need to neck the case down in a couple of steps before you got to 30 cal.
Just picture a case that looks like the top 2/3rds of a 300 Sav. with a rim.
I have a similar cartridge to that myself, out of a short rifle its a 150 yard deer round and would make a nice cartridge for a single shot handgun.
It could also be made in the other cals. you mentioned but all of the steps to neck it to smaller than 30 cal. would be a pain, theres better choices for that. Jedman
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