There is a LOT of confusion out there for the ZMAX bullets. Mostly because they are several different types of bullets (AMAX, VMAX, FTX, etc.) with a green tip instead of a red tip but many people think they are all AMAX or all VMAX for some reason.
The 30-30 ZMAX are FTX bullets; 100% identical except for the colour. The only cases that had to be made oddly short to work with FTX bullets are the 45-70's and that's only in certain rifles; full length cases work in most rifles. All the other FTX ammo (357, 44, 30-30, 308MX, etc.) uses standard length cases.
Most of the .224" ZMAX bullets are VMAX with a different colour tip. I think some might be AMAX.
The 168gr .308" ZMAX bullets are AMAX but the 110gr .308" are VMAX.
You just have to remember that Hornady didn't make any new bullets for the ZMAX line; they only used a different colour tip for the plastic or rubber in existing bullets they already made. If you want to know what a ZMAX bullet is, check their normal product line for that weight and shape. It'll be the same bullet with a different coloured tip, that's all. I've had several people tell me the .308" 168gr ZMAX is a VMAX bullet but there is no VMAX in .308" except for the 110gr. So Hornady designed, tested, and manufactured an entirely new bullet for a gimmick? No, not possible, I can't see components manufacturer making that large of a fiscal mistake.
---------------------------------------------------
Onto loading FTX bullets in general (and 30-30 ZMAX as an extension)...
My Lee 30-30 dies press against the ogive of the FTX bullet, not the zip, even though they are an odd shape. As a result the rubber shouldn't come into play during reloading and you should be able to do everything as normal. My 44 mag dies on the other hand press against the tip so usually really deform the rubber tip and sometimes have inconsistent seating depth because of it. The rubber springs back after a couple minutes. I could drill out the seating stem but I don't often use FTX bullets for 44 mag so it's good enough for me.
I shot two boxes of Hornady FTX for 30-30 (not ZMAX) and found all the primer pockets to be significantly too short. They were actually the perfect depth for large pistol primers, not rifle. For the amount of work it took to cut them with a uniforming tool, even in a cordless drill, and how much Win/FC/RP 30-30 brass I have lying around, I just tossed the Hornady brass in the scrap box. I don't know if it was just one lot or what but I'd check the primer pocket depths.
