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Posted: 4/25/2024 4:46:56 PM EDT
Aside from versatility is there any benefit to a 30cal can vs 5.56?
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Posted: 4/25/2024 4:56:57 PM EDT
[#1]
Reduced blowback from a larger aperture?
Sloppy AK 556 or 545 threads? |
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NC, USA
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Posted: 4/25/2024 6:19:52 PM EDT
[Last Edit: dmk0210]
[#2]
Originally Posted By Blacktoothgrin: Aside from versatility is there any benefit to a 30cal can vs 5.56? After filling most of my 556 can needs, I've been shopping 762 cans lately. I've noticed there seemed to be a much wider selection of 556 cans than 762 cans. And many 762 cans are geared towards either precision (long and heavy) or hunting (LW and light duty titanium) rifles. There seem to be fewer 762 cans that fit middle ground of the semi-auto light carbine use case. |
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NC, USA
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Posted: 4/25/2024 6:24:30 PM EDT
[#3]
Quote HistoryOriginally Posted By bradpierson26: Reduced blowback from a larger aperture? Sloppy AK 556 or 545 threads? The larger bore definitely does help with 556/545 AK bore concentricity though. Though my 556 Saiga gets by with a 6mm bore. |
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Posted: 4/25/2024 6:27:13 PM EDT
[Last Edit: Ryan_Scott]
[#4]
There are no advantages to a 308 can on a 5.56 on the balance.
Originally Posted By dmk0210: I'm not sure the larger bore always leads to less back pressure. Sometimes, maybe even often, but I'd think baffle design has a lot to do with it. The larger bore definitely does help with 556/545 AK bore concentricity though. Though my 556 Saiga gets by with a 6mm bore. All things equal a 308 bore will be louder and have less backpressure than a 5.56 can. Not a good trade. |
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MI, USA
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Posted: 4/25/2024 6:41:31 PM EDT
[#5]
 Does Bore Size matter? Not super scientific (or surprising), but larger bore = louder but less backpressure. |
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Posted: 4/25/2024 7:52:26 PM EDT
[#6]
Quote HistoryOriginally Posted By bluedog82:  https://www.youtube.com/watch?v=zZL7jwWCZ3kNot super scientific (or surprising), but larger bore = louder but less backpressure. I had this question and I asked CAT between the ODB and the WB. They said the ODB was quieter than the WB but the WB was slightly shorter and lighter when comparing Inconel's and then titaniums. I went with the CAT ODB titanium |
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NC, USA
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Posted: 4/25/2024 8:03:57 PM EDT
[#7]
Quote HistoryOriginally Posted By Ryan_Scott: All things equal a 308 bore will be louder and have less backpressure than a 5.56 can. Not a good trade. Quote HistoryOriginally Posted By Ryan_Scott: All things equal a 308 bore will be louder and have less backpressure than a 5.56 can. Not a good trade. Originally Posted By bluedog82: Not super scientific (or surprising), but larger bore = louder but less backpressure. What if you are comparing a low back pressure baffle design 5.56 can to a 30 cal can designed for maximum muzzle dBs? |
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Posted: 4/25/2024 8:20:33 PM EDT
[#8]
Get both
Get multiples of both Playing QD swap the can around on different rifles is not a fun game for me. |
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Posted: 4/25/2024 8:55:26 PM EDT
[#9]
I think my 8 inch 1.5" form 1 30 cal can is quieter than my fat cat which is a lot fatter but short by 3 inches when both are shot on the same rifle. It is actually quieter on a 11.5 223 than my 8.5 300, but I think the 300 has a ton of port pop.
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Posted: 4/26/2024 5:54:46 AM EDT
[#10]
Thanks
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Posted: 4/26/2024 10:45:22 AM EDT
[#11]
Quote HistoryOriginally Posted By Blacktoothgrin: Thanks I've seen the explorr 30 and 224 shot back to back. very similar weights, the 30 has one extra baffle. its not noticeably louder or quieter than the 224. so in this case, the extra length and weight (1 oz maybe) of the 30 isn't detrimental and worth it for extra versatility if you need it. now my gigantic griffin sportsmen is pretty quiet on 5.56 guns due to the larger volume. |
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AL, USA
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Posted: 4/26/2024 11:31:33 AM EDT
[#12]
I'm a big fan of modular suppressors. The .224 end cap on my 36m and 46m make a noticeable difference.
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Posted: 4/26/2024 10:16:48 PM EDT
[#13]
This is interesting:
 Smaller suppressor end cap means less noise? |
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VA, USA
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Posted: 4/26/2024 11:40:46 PM EDT
[#14]
I haven't bothered buying a 5.56 suppressor. I have three .30 cal cans I can use if I want on 5.56. They work well enough.
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FL, USA
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Posted: 4/28/2024 11:08:45 AM EDT
[#15]
I have the Ranger 7 and for me it is perfect for my purposes.
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Posted: 4/29/2024 5:48:07 AM EDT
[#16]
If I were going to buy a .30 cal suppressor for both .556 & .30 I’d at least find one that is modular to take advantage of the smaller size and weight when using on .556.
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Posted: 4/29/2024 6:35:30 AM EDT
[#17]
I don’t buy 5.56 cans even though I own 5.56 rifles 5:1 over 7.62s. Lightweight, modular.30 cal cand FTW. I could run 5.56 end caps but I don’t bother.
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SC, USA
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Posted: 4/29/2024 7:45:19 AM EDT
[#18]
I've seen a few people suggest a modular .30 cal can to use for both .30can and 5.56. Can y'all recommend a make/model of what you're having success with?
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OH, USA
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Posted: 4/29/2024 1:05:53 PM EDT
[#19]
Quote HistoryOriginally Posted By Ammon: I've seen a few people suggest a modular .30 cal can to use for both .30can and 5.56. Can y'all recommend a make/model of what you're having success with? I've been happy with my Huxwrx flow 762 Ti. |
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IN, USA
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Posted: 4/29/2024 1:12:08 PM EDT
[#20]
I used my CGS Hyperion on my .223 ARs and my 6.5 Grendel. I was happy with it. It was mainly for varmint hunting from a tripod, so size wasn't really an issue.
I've got a Polonium K on my AR pistol. Wanted to keep it small. I'm happy with both setups. But my Hyperion did just fine on my ARs. It's definitely a great way to get by until you get completely sucked in and need a reason to buy a can. Then, you just get a dedicated 5.56 can, just because. |
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Posted: 5/1/2024 9:25:29 AM EDT
[#21]
Quote HistoryOriginally Posted By 10milg29: I'm a big fan of modular suppressors. The .224 end cap on my 36m and 46m make a noticeable difference. downside is potential to forget to swap out the endcap when you swap to another larger caliber. |
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FL, USA
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Posted: 5/1/2024 9:39:23 AM EDT
[#22]
I have a resonator r2.
It was my first "rifle" supressor so I focused on versatility. I am happy with the reduction on my 11.3" .223 upper. I have a .308 bolt action too. Was contemplating a .300BO as well at the time. Now looking for a dedicated .223 supressor for my 10.5" brn-180. I dont shoot suppressed that much currently since I only go to a indoor range and use double earpro. |
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AL, USA
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Posted: 5/1/2024 9:40:59 AM EDT
[#23]
Quote HistoryOriginally Posted By IHTFP08: downside is potential to forget to swap out the endcap when you swap to another larger caliber. How'd that work out for you? |
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Posted: 5/2/2024 9:49:57 AM EDT
[#24]
Quote HistoryOriginally Posted By 10milg29: How'd that work out for you? I've never done it. I don't have any modular rifle cans for this reason. If I didn't have dedicated 556 cans, I wouldn't hesitate to use an explorr 30 on my 556 guns. I've got an optimus micro with threaded end cap but thats because its mostly 22lr rimfire can for me |
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ID, USA
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Posted: 5/4/2024 10:59:15 PM EDT
[#25]
I've been running cans for the last 20 years and still don't have a 5.56 can. I'm sure they are more efficient in the DB reduction...but how much, probably negligible.
The modern .30 Cal cans are village bicycles. You can run them on many/anything. My early YHM, and now HUXWRX 762 run on everything from my 556 SBR up to an 18" 300WM, or 24" 7PRC hunting rig. If you have a lot of 5.56 rifles/SBRs a dedicated 5.56 can might be a good option but from a general sound suppression standpoint the .30 cal cans do a great job. |
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Posted: Yesterday 2:15:11 AM EDT
[#26]
Quote HistoryOriginally Posted By BravoSector1: I've been running cans for the last 20 years and still don't have a 5.56 can. I'm sure they are more efficient in the DB reduction...but how much, probably negligible. The modern .30 Cal cans are village bicycles. You can run them on many/anything. My early YHM, and now HUXWRX 762 run on everything from my 556 SBR up to an 18" 300WM, or 24" 7PRC hunting rig. If you have a lot of 5.56 rifles/SBRs a dedicated 5.56 can might be a good option but from a general sound suppression standpoint the .30 cal cans do a great job. The main advantage of a 5.56 can is the tailored length and weight for that purpose. |
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Posted: Yesterday 2:51:45 AM EDT
[#27]
So I was on a 100% suppressed firing line and some asshole was shooting unsuppressed. But then I got closer and realized he wasn’t shooting unsuppressed it was the Huxwrx booth.
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NC, USA
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Posted: Yesterday 11:16:34 AM EDT
[#28]
Quote HistoryOriginally Posted By Missilegeek: The main advantage of a 5.56 can is the tailored length and weight for that purpose. This. I started collecting 5.56 cans and was spoiled by the options available. Now I'm looking for 30 cal cans to use on AKs and semi-auto battle rifles. The selections are much more limited. Except for a few outstanding exceptions, you mostly have a choice between long and heavy or light duty Ti. 
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VA, USA
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Posted: Yesterday 11:46:44 AM EDT
[#29]
Take a look at the results from the TBAC Silencer Summit.
https://thunderbeastarms.com/sound/summit2023/ There are some .30 cal cans that metered quieter at the muzzle than 5.56 cans on the 5.56 host. Or if your prefer, go to Pew Science and check out his results, there are some .30 cal cans that perform very very well on 5.56 there too. When you compare cans of equal volume the .30 cal cans are very close, within a dB or two, of the 5.56 cans. In my mind a couple of dB less noise on a 5.56 can really doesn't justify me purchasing another can just for 5.56. I have three .30 cal cans that I can run on 5.56 if I want. In the end you need to look at your use case, your budget, and the suppressors that work for you. |
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Posted: Yesterday 11:51:29 AM EDT
[Last Edit: Green0]
[#30]
The larger aperture of 30cal cans reduces erosion of the bore by putting a similar amount of particles through a lower pressure/ lower velocity hole with more surface area, reducing the bore aperture temperature, and wear. The cone of crap squeaking through a 5.56 brake, around the bullet, is also more inside the diameter of a 30 cal (~.354) hole, so it is hitting baffles further from the muzzle at a lower velocity which is also a means of reducing wear.
The larger .30 cal hole generally increases system backpressure in a well designed can, because gas can flow backward more easily through a larger bore on bolt opening. This would probably flip at a point like at 1/2” the hole is so big the flow is more like out the muzzle when the bolt opens, so timing is part of that situation. Our bushwhacker .46 for example doesn’t really have any backpressure on a 5.56, or .300blk gun. It won’t cycle our .300blk guns to bolt lock unless you put the 30 cal cap on the can. I saw one sent in for cs for that reason and I told the cs guy in the future, point the customer at the 30cal cap, for that reason and showed him the solution to prove it and it worked 100% with the 30 cal cap. |
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Posted: Yesterday 9:06:05 PM EDT
[#31]
Ok i will get called a liar and get flamed for this but this is just my two cents. I have an original yhm turbo. Use it on a couple different guns. But just an example i have an 11.5 ar and 10 inch zatstava m85. Recently got a griffin bushwhacker 36. If i use a 30 caliber cap on the griffin it does not eliminate backpressure but noticibly reduces it. But dammit im gonna say it, its not really much louder at all compared to the 5.56 can.
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Posted: Yesterday 9:47:07 PM EDT
[Last Edit: Green0]
[#32]
Quote HistoryOriginally Posted By aimatdeer: Ok i will get called a liar and get flamed for this but this is just my two cents. I have an original yhm turbo. Use it on a couple different guns. But just an example i have an 11.5 ar and 10 inch zatstava m85. Recently got a griffin bushwhacker 36. If i use a 30 caliber cap on the griffin it does not eliminate backpressure but noticibly reduces it. But dammit im gonna say it, its not really much louder at all compared to the 5.56 can. The BW .36 just performs really well in 5.56, and it does a bunch of other stuff well too. It is a better all around performer than the .46, due to not being as overbore for small caliber stuff. It has 8 baffles and most of our .30 cal cans have either 6 or 7. I’ve thought it would be kind of neat to have like a 5.56 can with the length of a .30 just to see what would happen but I’ve always figured that wouldn’t really sell, and we seem to make a lot of models, not even trying to make more models so its kind of a tough call. The psr5 is a nice can but it is 1/2” shorter than an Ops 12th model for example and thats one baffle shorter in our system. We are currently going to a second gen unit that has an m4sd-L stack but is identical length to the original model. |
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Posted: Yesterday 10:42:50 PM EDT
[#33]
Originally i wanted the bushwhacker for my 350 legend deer rifle build but realized it would work on lots of my ar's, ak's also. Glock 19 too but i need to get a threaded barrel and adapter. Deer seasons gonna be great this year. With a little tuning it sounds pretty good on the 350 even with supers!
 Attached File |
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NC, USA
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Posted: Today 6:55:55 AM EDT
[#34]
Quote HistoryOriginally Posted By Green0: The larger .30 cal hole generally increases system backpressure in a well designed can, because gas can flow backward more easily through a larger bore on bolt opening. This is opposite of what most people say / think. |
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