FWIW & IMHO,
Dunno as that as that is the best answer available. The .300 Blackout, .308 Winchester , .300 Winchester Magnum, .300 Norma Magnum, and .300 Lapua Magnum(rare) ALL SHOOT THE SAME CALIBER BULLET. This, as far as I know, does NOT mean that all .30 Caliber suppressors are GOOD TO GO shooting exteme overbore .30 caliber offerings. The ONLY source for this information is your suppressor manufacturer. They, generally, will give you a bore size and a amount of powder being burned(personally thinking of ThunderBeast here(hint;-). Just because the bullet fits throught the hole does NOT mean it is safe for you OR the long term health of your suppressor. YMMV.
Regards, Matt.