That's a head-scratcher. I easily get 30.5 gr of H322 in under a 110 gr SPH. Having said that, even though H322 granules are short, it is still a stick propellant. I find that pouring the propellant slowly, allowing the granules to orient as they accumulate, results in 30.5 grains still coming to rest at or below the bottom of the case neck, about where a Sierra Pro Hunter's base ends when I seat to 2.290" or so.
If I just dump the propellant fast, it takes up a lot more room. If you've already addressed this, then that tell-tale crunching sound is definitely unexpected...unless your TTSX is a lot longer, extending down into the shoulder area of the case (I wouldn't know, I haven't tried them). The 115 gr FMC Remington bullets I use have to be seated deeper (OAL 2.214, IIRC) in order to avoid engaging the lands on a DMR-C chamber, so they'd never fit on top of 30 gr of H322 (probably a grain-too-hot loading anyway).
FWIW, while 30.5gr did not show swipes on SSA-SP cases with the Pro hunters, I did drop it a little to 30.3 gr.