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4/22/2019 5:32:20 PM
Posted: 3/18/2013 11:51:35 AM EDT
Wondering how many of you are running a 7.62 can but shooting 556 thru it to avoid buying two seperate cans , and if so is the noise reduction comparable to that of a 556 can or reasonably close?
Link Posted: 3/18/2013 11:53:47 AM EDT
I do. Lots of folks do.

The difference is about 3-5dB - barely noticeable at the human ear.
Link Posted: 3/18/2013 1:41:18 PM EDT
The downside isn't the noise, its the extra 2-3 inches of length.
Link Posted: 3/18/2013 1:50:36 PM EDT
Originally Posted By Combat_Jack:
The downside isn't the noise, its the extra 2-3 inches of length.


2-3"?

M42K - 6.6"
SDN6 - 7.6"

YHM 5.56 QD Phantom - 6.875"
YHM .30cal Phantom LT - 7.625"

Surefire SOCOM556-SB - 6.2"
Surefire SOCOM762-RC - 8.4"

Of the major cans to compare, only the Surefire reaches 2" over the 5.56 counterpart.
Link Posted: 3/18/2013 2:07:11 PM EDT
I do, but when my Saker stamp comes I'll have another option
Link Posted: 3/18/2013 2:11:47 PM EDT
[Last Edit: 3/18/2013 2:12:30 PM EDT by Combat_Jack]
Originally Posted By andrasik:
Originally Posted By Combat_Jack:
The downside isn't the noise, its the extra 2-3 inches of length.


2-3"?

M42K - 6.6"
SDN6 - 7.6"

YHM 5.56 QD Phantom - 6.875"
YHM .30cal Phantom LT - 7.625"

Surefire SOCOM556-SB - 6.2"
Surefire SOCOM762-RC - 8.4"

Of the major cans to compare, only the Surefire reaches 2" over the 5.56 counterpart.


Surefire Mini, 5"
Mini-RC, 5.2"
AAC Mini-4, 5.25"
TBAC 30BA, 9"

So for the similar noise reduction to a .30 caliber can you can use a mini can in 5.56. Or one could use a Surefire 212 instead of an SDN6 (only $100 price difference) and you're 1.6" longer.

I really should have said 1.5-2 but I had the 30BA and AAC legacy cans in mind. The couple of extra ounces you pick up with a .30 caliber can are nothing compared with the difference in balance.

Now, throw a 762MINI in the mix at 6 inches and you have my attention.
Link Posted: 3/18/2013 2:33:36 PM EDT
Originally Posted By Combat_Jack:
Originally Posted By andrasik:
Originally Posted By Combat_Jack:
The downside isn't the noise, its the extra 2-3 inches of length.


2-3"?

M42K - 6.6"
SDN6 - 7.6"

YHM 5.56 QD Phantom - 6.875"
YHM .30cal Phantom LT - 7.625"

Surefire SOCOM556-SB - 6.2"
Surefire SOCOM762-RC - 8.4"

Of the major cans to compare, only the Surefire reaches 2" over the 5.56 counterpart.


Surefire Mini, 5"
Mini-RC, 5.2"
AAC Mini-4, 5.25"

TBAC 30BA, 9"

So for the similar noise reduction to a .30 caliber can you can use a mini can in 5.56. Or one could use a Surefire 212 instead of an SDN6 (only $100 price difference) and you're 1.6" longer.

I really should have said 1.5-2 but I had the 30BA and AAC legacy cans in mind. The couple of extra ounces you pick up with a .30 caliber can are nothing compared with the difference in balance.

Now, throw a 762MINI in the mix at 6 inches and you have my attention.


Not an apples to apples comparison. Full-size 5.56 to full-size .308 is more apt, hence my M42K/SDN6, Phantom 5.56/Phantom 7.62, etc.
Link Posted: 3/18/2013 2:39:50 PM EDT
In any case the difference is about 1.5" from full size to full size and more if you like mini cans like I do.

Point is, people should think long and hard about whether try NEED a 30 caliber can before they settle on this approach.

My 762K is longer than the .300BLK barrel it would go on.
Link Posted: 3/18/2013 3:35:06 PM EDT
Originally Posted By andrasik:
Originally Posted By Combat_Jack:
Originally Posted By andrasik:
Originally Posted By Combat_Jack:
The downside isn't the noise, its the extra 2-3 inches of length.


2-3"?

M42K - 6.6"
SDN6 - 7.6"

YHM 5.56 QD Phantom - 6.875"
YHM .30cal Phantom LT - 7.625"

Surefire SOCOM556-SB - 6.2"
Surefire SOCOM762-RC - 8.4"

Of the major cans to compare, only the Surefire reaches 2" over the 5.56 counterpart.


Surefire Mini, 5"
Mini-RC, 5.2"
AAC Mini-4, 5.25"

TBAC 30BA, 9"

So for the similar noise reduction to a .30 caliber can you can use a mini can in 5.56. Or one could use a Surefire 212 instead of an SDN6 (only $100 price difference) and you're 1.6" longer.

I really should have said 1.5-2 but I had the 30BA and AAC legacy cans in mind. The couple of extra ounces you pick up with a .30 caliber can are nothing compared with the difference in balance.

Now, throw a 762MINI in the mix at 6 inches and you have my attention.


Not an apples to apples comparison. Full-size 5.56 to full-size .308 is more apt, hence my M42K/SDN6, Phantom 5.56/Phantom 7.62, etc.


I think he was more stating for the same DB reduction of a 5.56 can vs 5.56 through a 7.62 can, you can get away with the Mini sizes in regards to them being the same db level.
Link Posted: 3/18/2013 3:47:31 PM EDT
Correct.
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