Todd, I'm looking to buy another can tonight or tomorrow...But I'm torn between the Sandman-S and Nomad-30...Sorry I missed this. I guess I need to turn on notifications or something. I've had my head down working on our new taper mount, and times are just crazy busy in general.
Here's my take on it all from the designer and how we positioned the Nomad and Sandman in the lineup:
For full auto, continuous, heavy shooting, there's just nothing that beats the Sandman. The KeyMount mounting system is welded into it and it doesn't come loose on the muzzle device when shooting. The stellite baffles handle erosion better than any other material out there. It also comes off when you want. It's known for very low backpressure and is very "friendly" for DI guns in that it allows for easy set up to get them hearing safe at the ejection port (i.e. changing out buffer weight, gas block adjustment, A5 buffer system, etc.). Many suppressors will require all of the above mods, where the Sandman-S or especially the -K may just require one of the above. That all depends on many factors, hence the term that it's "friendly" for hearing safe setup. The rifle is usually dialed in pretty quickly.
The Nomad will still take full auto fire and even sustained hard use. Heat is only the enemy in terms of baffle erosion. The 17-4 stainless is crazy strong, but will begin to wear before stellite will at those high temps. Note that it takes sustained high temps and firing schedules to see this, though. If you get a suppressor glowing red hot every time you're out shooting, then the Sandman is for you. I've ran many Nomads in full auto tests I can tell you that a few mag dump sessions of 4-6 straight mags of full auto use will begin to impinge the face of the blast baffle and you'll see roughness along the bore-line--but no increase in diameter of the bore due to wear. Otherwise, the Nomad will offer you more options. If you have a favorite mount on all of your rifles, then it let's you still run with that if the manufacturer provides an adapter for it.
It's also quieter than the Sandman-S and is lighter. It has a super efficient baffle stack that is not a standard cone design. It redirects gas into secondary chambers and it also allows that gas to return back across the bore-line to impede reverse flow back down the bore. The net effect is backpressure that is on par with the Sandman-S (which is awesome as mentioned above), while still being efficient at the muzzle. Many suppressors that are super efficient at the muzzle will massively drive up backpressure (i.e. the Omega 300). You'll also find that the Nomad works incredibly well on subsonic ammo and shines even more as the pressure goes up with supersonic cartridges.
The Nomad's baffle structure is like a lattice bridge where it directs the forces to reinforced points. The welded joints you see between the baffle sections are super thick and that's where all the hoop stress is diverted. That's why it has a higher caliber rating than the Sandman series (300 Norma Mag).
I hope that helps answer some questions!
Todd Magee
Dead Air Engineering
Will the Nomad-30 be fine on a 7.5" 5.56 pistol without any real detriment to the baffles, as long as you only do the occasional mag-dump, otherwise, just regular shooting, no F/A fire...???
Reason I ask, is because I already have a Nomad-LT waiting approval, that I want to use for my bolt-action and hunting rifles, but need a can strictly for my AR's. All my other AR's are 14.5" or longer, and are 5.56, .300 BLK, and 6.5 Grendel. Just the 1 odd-gun out, the 7.5" 5.56 pistol. I prefer the mounting options of the Nomad-30, and could use it in DT config as well as KeyMo, so I find it more versatile of an investment. So, the only reason I'd choose the Sandman-S over the Nomad-30 would be for CYA on that 1 gun... Do you find it necessary to go Sandman-S just to cover that 1 base, or would you just go ahead and get the Nomad-30, and call it a day?
Thanks!