Unknown suppressors OG testing

[nm.otter]

So these are only coming in 5/8x24? Or will there also be 1/2x20?

1/2"x28 adapter (earlier in this thread).

 

[ztc92]

I finally got around to shooting a bit with the UM OG prototype today in between some rain showers. I put about 20 rounds of 6.5 Creedmore through it to start (all the ammo I had for it at the moment). When that ran out, I moved on to 223 and put another 150 rounds through it. I shot it back-to-back with my Scythe on the 6.5C and against the Scythe and Harvester Evo on the 223.

Overall I'm very impressed and I think UM hit it out of the park with this one. Here's some info on rifles/loads I used for those wondering.
- 6.5 Creedmore: Factory Tikka Blued, cut to 18" and threaded 5/8 x 24. No shoulder to speak of but no issues in over 500 rounds with multiple different suppressors. Shooting handloads of 130 ELDM's.
- 223: Factory Tikka Stainless, cut to 20" and threaded 1/2 x 28. Uses a simple adapter from Midway to get to 5/8 x 24. No issues in over 3000 rounds with multiple suppressors. Shooing AAC 77g OTM.

Note the need for using an adapter with my 223. This was the only real "issue" with the UM OG for my use case.



After about 10 minutes with a hack-saw and a file, we were good to go.



I'll link some videos in a seperate post below that show 3 rounds with Scythe vs UM OG on the 6.5 Creedmore and 5 rounds each with the Harvester, Scythe and UM OG on the 223. I should add that both my Harvester and Scythe have a DIY supressor cover of carbon felt, high-temp tape and Coban. They Scythe also has the 6mm end-cap, rather than the brake it ships with.

In summary, after shooting it today:
- Both the Scythe and the UM OG are noticeably better than the Harvester Evo (no surprise there). I don't shoot the Harvester on my 6.5 Creedmore any more as it is unpleasant without double ear-pro.
- I fired 3 shots each without ear pro using the Scythe and the UM OG on my 6.5. I felt they were very similar in sound and suppression. I think both would be hearing safe for a few shots while hunting but I would use ear pro with either one if shooting multiple rounds while practicing.
- My Scythe did have a high pitched "Ting" to it prior to adding a DIY cover. The UM OG bare metal with a 30 cal bore still sounded better than my Scythe that has been optimized with a DIY cover and a 6mm bore end-cap. It's hard to explain why I liked it better, but I did. They both have a similar "Crack" at the shot and the report of the rifle echoing in the hills was nearly identical. That said, the UM OG seemed to have a deeper tone than the Scythe. Best way I could describe this in words is more of a "BOOM" vs a "HISS".
- On the 223, my Harvester Evo is acceptable but I rarely shoot it without ear pro as it feels borderline too loud. Both the Scythe and the UM OG on the 223 were a joy to shoot.
- As others have said, the rifle does balance better with the UM OG thanks to the reflex design. My wobble zone was smaller and my hit rates were higher when using the UM OG from unstable positions and shooting offhand compared to the Scythe when comparing both on my 223.
- I shot over 100 rounds of 223 through the UM OG without any ear-pro over the course of about an hour and it didn't bother me at all.
- The shorter OAL and narrower diameter of the UM OG compared to my Scythe and Harvester was a welcome change as it made the rifle handle and point better. I suspect I wouldn't see it in my scope at all thanks to shorter length and smaller diameter, which I do find distracting when using my scope on low-power.
- The simple, single hole and permaennt, flat cap without any dimples, patterns, recesses or cutouts makes it extremely easy to tape the muzzle with simple masking tape. This was very relevant today in the rain and my Scythe was pissing me off as the tape wouldn't stick.

In summary, I like the UM OG more than my Scythe for both 6.5 Creedmore and 223. Even if the Scythe didn't have the failure issue, I'd still pick the UM OG if given a choice between the two. It is barely any heavier, balances noticeably better, sounds as good or better (even compared to my optimized Scythe) and predicted to be $200 cheaper. I think UM is going to sell a pile of these if the price stays at $999.

Edit - Forgot to mention mirage. I'm not sure if the 3-D printing plays a role in this but I felt the UM OG had significantly less mirage compared to my Scythe. I shot many strings of 12 rounds quickly (about 1-2 minutes) in the 223 as this is what my 3 mags for the 223 will hold and just started to notice minor mirage around rounds 10-12. I need to do some more testing on this concept with the 6.5 Creedmore once I get more ammo loaded up. I recall with the Scythe it would have a mirage after 3-5 rounds, I suspect the UM OG will be more like 5-10 but we'll have to see.

 

[ztc92]

Videos of shooting UM OG, Scythe and Harvester Evo as mentioned above. Titles should explain what each video shows.

 

[MuleyFever]

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We also have some for pride month. It's crazy how different they can look coming out of the heat treatment.

View attachment 884527

How long does it take to print one?

 

[HuntHarder]

@ztc92 thank you for that review. I played both of your videos showing the Scythe and the og at the same time only seconds apart. Muzzle movement looks less with the Scythe. Sound wise, they sound very similar. I will try out an OG for sure. Looks promising.

 

[Ryan Avery]

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How long does it take to print one?

Not my wheelhouse but a batch of 20+ takes 30ish hours

 

[nm.otter]

I'm not sure if the 3-D printing plays a role in this but I felt the UM OG had significantly less mirage compared to my Scythe. I shot many strings of 12 rounds quickly (about 1-2 minutes) in the 223 as this is what my 3 mags for the 223 will hold and just started to notice minor mirage around rounds 10-12. I need to do some more testing on this concept with the 6.5 Creedmoor once I get more ammo loaded up. I recall with the Scythe it would have a mirage after 3-5 rounds, I suspect the UM OG will be more like 5-10 but we'll have to see.

Combine more efficient thermal coupling (lack of welds) with increased radiating surface and that would make sense. The OG is 30% longer and has 16% more outer cylinder area. Then add the inner bore of the reflex section and the barrel end ring.

 

[bearcreekbandit]

I still have much to do, including having someone else shoot while I listen, but I did get a chance to shoot in the field without ear pro alternating with a B&T Print X H and KGM R30K. The OG definitely has a more "dead" thumpy sound. Those other two cans (due to the flow-through design probably) are sharper and hissier. My ears have become pretty sensitive, and I wouldn't recommend shooting any supersonic stuff at volume without ear pro through any can. However, it does what it needs to do for a hunting can and is pretty damn pleasant.

 

[Dioni A]

I still have much to do, including having someone else shoot while I listen, but I did get a chance to shoot in the field without ear pro alternating with a B&T Print X H and KGM R30K. The OG definitely has a more "dead" thumpy sound. Those other two cans (due to the flow-through design probably) are sharper and hissier. My ears have become pretty sensitive, and I wouldn't recommend shooting any supersonic stuff at volume without ear pro through any can. However, it does what it needs to do for a hunting can and is pretty damn pleasant.View attachment 885382

I think thumpy has to be my favorite descriptor I’ve ever heard anybody use describing the sound a can makes.

 

[Dan Plantz]

.45 cal version? My dog would thank you when I’m shootings bear over her with the 450 bushmaster AR

 

[nm.otter]

Figure out how to make the best subsonic (limited energy) suppressor. Offer it in various bore diameters.

...and think about potential ISB opportunities.

 

[camelcluch]

I want one bad but @Ryan Avery sold me on an ultra 5 a while back. So, there is that…But the OG looks promising.

 

[Bluumoon]

We also have some for pride month. It's crazy how different they can look coming out of the heat treatment.

View attachment 884527

Do we request extra, extra rainbow, or extra special?

 

[wind gypsy]

So these are only coming in 5/8x24? Or will there also be 1/2x20? I see it will fit up to .750 barrels, but isn’t the recommended minimum size for 5/8x24 thread .750? So anything smaller than .750 barrel diameter will have a smaller thread if I am thinking about that correctly

I've seen 0.725" more commonly referenced as 0.100" shoulder is common min recommendation, 5/8=0.625. But seekins and others have sent a pile of rifles out the door with closer to 0.70" shoulder for 5/8 threads.

 

[camelcluch]

Can a guy use the area 419 adapters they already have mounted on every gun because that was the easiest a month ago??

 

[Dobermann]

Orange? Why?

So @mxgsfmdpx will buy one.

 

[Dioni A]

got out camping this weekend and took just a few minutes to shoot over the sound meter. I was kind of surprised with the results. I set the sound meter up for max DB hold using the LPK format. This measures the absolute peak max sound pressure without doing any averaging or manipulation internally. Most acoustic sound meters would read something that is quieter than what I got unless similarly configured.

The cans tested are
Jk armamenk rcx 155 3 baffle configuration 5in
PWS BDE 556 Full stack 6.5in
AB A10 .308 6.5in
AB RAPTOR 8 3.5 reflex 9.5in oal 22cal
UM OG 4in reflex 8in oal

(Crocs intentionally in picture.)
I was pretty rushed for time so I just tested things quickly. I took two shots with each can and recorded the highest number. I used my 223 shooting a reasonably hot load of varget 73ELDM.

Sounds was measured roughly at shooters ear location.

Jk 155 138.7
PWS 134.3
AB A10 133.5
AB RAPTOR 8 127.6
UM OG 134.5


just listing the numbers is not a great reflection of how my ears perceived them. I definitely think there’s a strong argument for tone playing a significant role in perception. To my ears and a couple other buddies the UM was second quietest of this group. That said I don’t think it’s even the most important point of the design. I really appreciate how much shorter this thing is. The only real fair comparison is the 5 inch JK which is obnoxiously louder by my perception.

The UM really feels like a well balanced Jack of all trades. It seems like it’s quiet enough. It definitely doesn’t weigh What most of these other cans do and man is it nice that it doesn't stick so far out. For a suppressor designed for Hunting it feels like it hits the sweet spot.

I have to give cudos to the ab raptor. it is impressively quiet. For something that doesn't get packed or for high round count shooting it would be nice.

i’ll try and sneak out again to shoot this test with a 22 Creedmoor to see if it plays out any different

 

[Q_Sertorius]

I recall them saying (roughly) it was a very good .30 cal can, but really shined on smaller calibers. Volume matters -- a lot.

I understand that it’s probably not a linear progression, but I have been scratching my head wondering why they don’t offer a 10” version. That would be more volume. Maybe it just doesn’t decrease the sound that much more? I personally have gotten so used to having a 6” can sticking off the end of my rifle that the idea of a reflex suppressor that is 4+6 or even 6+6 sounds appealing to me if it gets it significant sound reduction.

Of course, in a really perfect world, I could get an integrated suppressor barrel that would fit on my T3X for $1000.


____________________
“Keep on keepin’ on…”

 

[Q_Sertorius]

I guess what I just described is the Raptor 8?


____________________
“Keep on keepin’ on…”

 

[BBob]

Can a guy use the area 419 adapters they already have mounted on every gun because that was the easiest a month ago??

No