Is anyone aware of sound pressure studies on the subcaliber use of suppressors (e.g., .308 can for 6.5, .338 can for .308)?
Suppressors subcaliber suppressor sound pressure studies
- Thread starter Nukes
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Re: subcaliber suppressor sound pressure studies
There is no way to reliably do it.
What is your interest/question/concern?
There is no way to reliably do it.
What is your interest/question/concern?
Re: subcaliber suppressor sound pressure studies
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RollingThunder51</div><div class="ubbcode-body">There is no way to reliably do it.
What is your interest/question/concern? </div></div>
(1) DTA .338 titanium can on the way (ATF slow-motion) to be used on both .308 22" and .338 29" barrels. One informant stated approximately 7dB loss using .338 rather than .308 can on .308 barrel, but more details would be of interest.
(2) Will soon purchase 6.5x47L or 6.5CM 26" barrel for the DTA and it seems a stretch to use a .338 can on a 6.5.
(3) Considering Alexander Arms 6.5 Grendel GDMR purchase, hence a can to accompany it.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RollingThunder51</div><div class="ubbcode-body">There is no way to reliably do it.
What is your interest/question/concern? </div></div>
(1) DTA .338 titanium can on the way (ATF slow-motion) to be used on both .308 22" and .338 29" barrels. One informant stated approximately 7dB loss using .338 rather than .308 can on .308 barrel, but more details would be of interest.
(2) Will soon purchase 6.5x47L or 6.5CM 26" barrel for the DTA and it seems a stretch to use a .338 can on a 6.5.
(3) Considering Alexander Arms 6.5 Grendel GDMR purchase, hence a can to accompany it.
Re: subcaliber suppressor sound pressure studies
I don't think we've measured it but shooting .308 through our .338 can "sounds" as quiet or quieter than using the .30 cal suppressor.
I don't think we've measured it but shooting .308 through our .338 can "sounds" as quiet or quieter than using the .30 cal suppressor.
Re: subcaliber suppressor sound pressure studies
I don't have meter data on it but we have fired all sorts of stuff through my AMA built .338 Lapua can. It seems to work quite well with .308, .243, .300 blackout, .338BR(sub and supersonic). Firing it next to an AAC .308 suppressor the jury is out on which was quieter, my .338 can or the AAC .308 both shooting the same .308 ammo. Different observers had different opinions which is common due to different sound from each can. I can't tell you that it would meter as well as a .308 can but it sounds as good. You should be fine shooting the 6.5 through it as well.
Frank
I don't have meter data on it but we have fired all sorts of stuff through my AMA built .338 Lapua can. It seems to work quite well with .308, .243, .300 blackout, .338BR(sub and supersonic). Firing it next to an AAC .308 suppressor the jury is out on which was quieter, my .338 can or the AAC .308 both shooting the same .308 ammo. Different observers had different opinions which is common due to different sound from each can. I can't tell you that it would meter as well as a .308 can but it sounds as good. You should be fine shooting the 6.5 through it as well.
Frank
Re: subcaliber suppressor sound pressure studies
Only thing I can contribute here would be the following. Can volume can only make up for so much overbore, and that is not much really with rip roaring cartridges. When you hear 7dB, think of that in terms of just short of a tripling of preceived sound. A .30 through a .338 can do wonders and makes great sense. I buy XL .30 cans (.338 chamber #, but still .30 bore) and they are sensational. Its the old balance between length and weight, etc. The 6.5 has issues with overbore.
Same perhaps for a 6.8 round through the .30 can. But a 6.5 through a .30 it would be, imo, fair supression only. I use a 6.8 XL can for my 6.5 and get reasonable results for a guy that wants superb results. Faster is harder to strip gas.
The big trick is not just good/great suppression, but reliable accuracy when using overbore as well.
Only thing I can contribute here would be the following. Can volume can only make up for so much overbore, and that is not much really with rip roaring cartridges. When you hear 7dB, think of that in terms of just short of a tripling of preceived sound. A .30 through a .338 can do wonders and makes great sense. I buy XL .30 cans (.338 chamber #, but still .30 bore) and they are sensational. Its the old balance between length and weight, etc. The 6.5 has issues with overbore.
Same perhaps for a 6.8 round through the .30 can. But a 6.5 through a .30 it would be, imo, fair supression only. I use a 6.8 XL can for my 6.5 and get reasonable results for a guy that wants superb results. Faster is harder to strip gas.
The big trick is not just good/great suppression, but reliable accuracy when using overbore as well.
Re: subcaliber suppressor sound pressure studies
Shooting .260 is consistently quieter than .308 through most .30 cal suppressors I've heard.
Shooting .260 is consistently quieter than .308 through most .30 cal suppressors I've heard.
Re: subcaliber suppressor sound pressure studies
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Graham</div><div class="ubbcode-body">We just did it for 200 rounds over three days: With .308 the .338BA is noticeably quieter than a 30P-1. </div></div>
Interesting. As best I can tell from the info on the TBAC website, the only difference is attachment. I am pressed to understand why a substantial perceived difference.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RollingThunder51</div><div class="ubbcode-body">Only thing I can contribute here would be the following. Can volume can only make up for so much overbore, and that is not much really with rip roaring cartridges. When you hear 7dB, think of that in terms of just short of a tripling of preceived sound. A .30 through a .338 can do wonders and makes great sense. I buy XL .30 cans (.338 chamber #, but still .30 bore) and they are sensational. Its the old balance between length and weight, etc. The 6.5 has issues with overbore.
Same perhaps for a 6.8 round through the .30 can. But a 6.5 through a .30 it would be, imo, fair supression only. I use a 6.8 XL can for my 6.5 and get reasonable results for a guy that wants superb results. Faster is harder to strip gas.
The big trick is not just good/great suppression, but reliable accuracy when using overbore as well.
</div></div>
Since a barrel swap is all it takes on the SRS, the cost savings of a can swap would be attractive, but it seemed too much to hope that the .338 can would do much for the 6.5x47L.
Other than Surefire, does anyone make a 6.8 can?
Despite credible glowing reports regarding TBAC sound pressure performance and understanding that 7dB is quite a loss, I still decided to go with a DTA for my SRS because of the consistent reports of improved accuracy. Having just shot a 0.22MOA 200 yard group through my new .308 (Lapua 155 Scenar factory load) I figure that the reported 0.25MOA improvement (0.22-0.25MOA) should take my groups into another dimension of the space-time continuum.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Graham</div><div class="ubbcode-body">We just did it for 200 rounds over three days: With .308 the .338BA is noticeably quieter than a 30P-1. </div></div>
Interesting. As best I can tell from the info on the TBAC website, the only difference is attachment. I am pressed to understand why a substantial perceived difference.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RollingThunder51</div><div class="ubbcode-body">Only thing I can contribute here would be the following. Can volume can only make up for so much overbore, and that is not much really with rip roaring cartridges. When you hear 7dB, think of that in terms of just short of a tripling of preceived sound. A .30 through a .338 can do wonders and makes great sense. I buy XL .30 cans (.338 chamber #, but still .30 bore) and they are sensational. Its the old balance between length and weight, etc. The 6.5 has issues with overbore.
Same perhaps for a 6.8 round through the .30 can. But a 6.5 through a .30 it would be, imo, fair supression only. I use a 6.8 XL can for my 6.5 and get reasonable results for a guy that wants superb results. Faster is harder to strip gas.
The big trick is not just good/great suppression, but reliable accuracy when using overbore as well.
</div></div>
Since a barrel swap is all it takes on the SRS, the cost savings of a can swap would be attractive, but it seemed too much to hope that the .338 can would do much for the 6.5x47L.
Other than Surefire, does anyone make a 6.8 can?
Despite credible glowing reports regarding TBAC sound pressure performance and understanding that 7dB is quite a loss, I still decided to go with a DTA for my SRS because of the consistent reports of improved accuracy. Having just shot a 0.22MOA 200 yard group through my new .308 (Lapua 155 Scenar factory load) I figure that the reported 0.25MOA improvement (0.22-0.25MOA) should take my groups into another dimension of the space-time continuum.
Re: subcaliber suppressor sound pressure studies
He's comparing our .338 suppressor to our .30 cal suppressor. The .338 versions are much larger to accommodate the additional gas volume of the .338 Lapua.
He's comparing our .338 suppressor to our .30 cal suppressor. The .338 versions are much larger to accommodate the additional gas volume of the .338 Lapua.
Re: subcaliber suppressor sound pressure studies
I missed that. <span style="font-style: italic">That</span> I can certainly understand. Thank you.
I missed that. <span style="font-style: italic">That</span> I can certainly understand. Thank you.
