Suppressor Testing??

[Formidilosus]

You’ll notice a lot of videos were made. But I haven’t seen one showing comparison to an airlock.

I’ll be told how silly I am. But why not just post a video of airlock vs OG (any or all of them) with same meters and setup

The issue across the board, is that people get emotional with all of it. I will test any can that someone wants to send Ryan for the eval- just like the scopes. However, the eval is what it is for a lot of reasons- reasons that come from hundreds of thousand of rounds of legitimate testing. I’ve got test cans from until companies, specifically doing field evals on them before they come to the market- in the last two weeks I have seen over 10,000 rounds being shot from suppressors during testing- I don’t give two flying flips which cans do what, anymore than I do which bullet does which, or what scope does what. You have people that posted for months in every thread how one can or another is “so loud” all while never allowing it to be looked at and metered, and then falling all over themselves for another can that is demonstrably as loud.

People have sent cans to Ryan, and specifically and directly stated that I am not to use the cans…. Funny how that works.

 

[few907]

@Formidilosus ...who doesn't want you to test their cans???

 

[Ryan Avery]

I think it's totally disingenuous of me, owning Rokslide, to review something I helped create against another product.

T&K asked me to test some cans, and that's what I'm going to do. Along the way, you will see why these meters suck, and why we do need a better standard.

I should have the first video up tomorrow for your viewing pleasure.

 

[HuntHarder]

I was mainly talking about @Formidilosus. He was making alot of videos for a while comparing OG cans to different other cans. I remember one specifically comparing to a raptor without the reflex.

But I haven’t seen one comparing to an airlock.

Post in thread '**Results are in** REAPER vs AIRLOCK vs PTR VENT 1 vs NOMAD TI-XC vs DD ENTICER LTI TITANIUM SHOOTOUT' https://rokslide.com/forums/threads...cer-lti-titanium-shootout.427266/post-4464742

Airlock stood out amongst all these cans that are all considerably larger. So far, I haven't had a person yet not think my airlock isn't my quietest, best sounding can. I have compared it against my Scythe, OG30, Og65, gemtech and a few buddies Ultra 7, Ultra 5 and an Omega. From a size/weight, suppression factor, I don't think I have seen an equal for a hunting rifle can.

 

[4th_point]

I am saying it may not be measurable. Ie our meters are simply not accurate enough and/or the event of firing a projectile is too variable to get a measurement that has enough confidence that it’s actually different. If you are saying it makes a 1 db difference, I argue that the current technology is not that accurate. If you are saying 3 db, then yes it might be reliably measured with today’s tech. But from testing data I have been able to find, that’s a pretty big change like a baffle or two difference.

Small sample size bias just like people claiming nodes exist. If you simply do small sample sizes, they can exist, but when you do enough test to be statistically significant, they no longer exist. I have never seen anyone provide statically significant data on a suppressor test. I also believe it’s not relevant. As a user, I am more interested in big changes, ie 3-5db. 1-2 db changes are noise. I have also concluded that once you are around 130-133, it really doesn’t matter if it’s quieter. I can’t tell the difference on a rifle. Standing next to it, sure, but not when shooting.

Bluefish,

I think we're on the same page. My question is at the end of this post, but bear with me here.

Ryan's link doesn't show what meter/preamp/mic he's using (only the brand) but assuming it's a Class 1 with appropriate mic and range, then it should be +/- 1 dB in the band of interest. And +/- 2 dB for Class 2.

Either way, you have a point, simply based on datasheets. But the +/- 1 dB is really the limit right? And possible that the equipment can do better than 1.

Some tests with bare muzzles have shown less than 1 dB std dev. Not 30 rounds, but I think 20 IIRC. So the shot to shot variation with bare muzzle can be very low. Impulse from simple pressure vent. But accuracy of equipment plus std dev of ammo can make detection of small design changes difficult.

Are you also saying that once you add a can, its affect on the actual pressure has more variability? In other words, it's no longer a simple pressure vent, but more complicated gas expansion and gas path leading to measurable differences in peak pressure? Therefore, large shot counts are needed?