Yes sir
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Accuracy decrease with supressor on
- Thread starter Sykes
- Start date
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lancetkenyon
Well-Known Member
I run 42.0gr H4350 w. 105 Hyb @ 3188fps in a 24".
ajkellerusmc
Well-Known Member
No baffle strikes which is what I suspected at first, I then put on the shorty version of the same model suppressor and groups tightened back up. Rifle is a DD5V1 semiauto and suppressors are AAC 762 SD and its shorter brother AAC 762-SDN-6. I was suprised and shot 3 more groups just to be sure I was suprised. The only thing I suspect is baffle erosion in the SD as it has a lot of rounds through it and with a flashlight you can see the first 3 or 4 baffles have significant erosion. I put it on a different 308 and a 6.5 creedmoor and it shoots great. Go figure
jarheadhunter
Well-Known Member
Mine is acting the opposite what others are saying. My speed seems slow with my suppressor on. Running the same length barrel as my buddy he is getting at least 200 FPS faster then me.
QuietTexan
Well-Known Member
You're seeing a 200 FPS decrease putting a can on? Or you didn't shoot yours without the can to confirm it's 200 FPS slow with AND without the can?
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Bob Wright
Well-Known Member
Tag
waveslayer
Well-Known Member
Do you have a cover on your can? Could be mirage from the suppressor heating up. What's your ambient air temp. Shoot at a 100 and report back.. have two targets. Go round Robin style. Shoot no can at target 1. Place can on and shoot target 2. Remove and shot 3rd shot on target 1. I'd be interested to see your no can groups this way
No cover, it was 10 degrees. Only 3 rounds before letting it cool. Which doesn't take long at that temp! Also did the same thing at 100 yards back in November with the 88 gr hammer load.
waveslayer
Well-Known Member
I'd round Robin that load. Also when was that load developed? When it was 10 degrees. My cans get pretty hot quick ... could be mirage but most likely a bad load... what Can is it ?
Load was developed that day. Gemtech Tracker.
waveslayer
Well-Known Member
I'd say you need to work on the load. Was there a big velocity swing? How many rounds down the barrel. Usually 200 rounds is when the varrel settles more and is nice and broken in. Barrels will speed up.. passing up on your loads.
If you plan to use a can all the time then do load development with the Can on. Otherwise the POI shift can throw off your nodes, just like the lovely Magnetospeed does
Texas Speed Bump
Well-Known Member
Joining in on this conversation. I recently got my first can and have tried it on my LR-308 and just this weekend, on my 6.5 Creedmoor. While it (predictably) changed the POI on my 308, it didn't seem to affect it's accuracy. My Bergara 6.5 Creedmoor is a different story. Without the can, my Bergara easily shoots sub-MOA but with the supressor, it widens the pattern to between 2 and 3 MOA. This rifle really loves Hornady Black 140 grain factory loads and consistently shoots between 0.5 and 0.75 MOA with those store-bought rounds, so it's a huge disappointment to lose that cartridge just to shoot supressed. I guess I'll have to go back to ladder testing hand loads until I find one that shoots consistently with a can. 
As Plinker147 said..
Harmonics...I have the same problem with a 338 Savage Elite Precision.....I have tried 3 different EXPENSIVE BRAKES from three Top manufacturers.....nothing works. The moment I thread anyone of them on groups go from .337 five shots to......HELLO...just like yours....and no amount of load development can cure the shotgun effect!...It's harmonics
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