Given that my Nomad-LT and Hydrogen-L 7.62 are almost identical, I’d guess the Nomad-Ti and Hydro-S 7.62 would be nearly identical also.
That being said, Andrew said that during his sound meter testing, the shorter Hydrogen-S 6.5mm (7” can) performed nearly equally to the .30 caliber Hydrogen-L (9” can) on the same exact 6.5 rifle back-to-back. So apparently with the 6.5mm version, you can save 2” in length (better for hunting), and get equal sound performance to the 9” cans, when used on a 6.5mm (or smaller) bore rifle.
I haven’t had a chance to shoot it yet, as I didn’t have my KeyMo for it 2 weekends ago, and was out of town all last weekend, but I plan to shoot it this weekend. And will do some comparison videos.