I suspect you're correct. It isn't long until the draconian caliber restrictions are removed all together.
The DNR has confirmed that necked cartridges are lawful for the upcoming hunting season (only requirement being .35 to .50 diameter, & 500+ foot lbs). It's crazy that we can run our 375 H&H but can't run our .30-30 or .243, but that's what you get when you let special interests and big government write the laws.
I've thought about putting together a 35 Whelen bolt action instead of toting a 45-70, but I honestly can't say that I've killed a deer at over 100 yards (or had an opportunity I would take) in a long time so it seems like a waste of money. At this point, it's sort of pointless to even have firearm restrictions, given how far guys can shoot muzzleloaders and other weapons that are currently in use. I see the comments concerned about guys shooting deer at 500+ yards with long range rifles (people are already doing this with muzzleloaders) and I don't think people realize how rare that would be/how difficult that is in the first place even with modern tech.