Welcome guest, is this your first visit? Create Account now to join.
  • Login:

Welcome to the NZ Hunting and Shooting Forums.

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.

Black Watch DPT


User Tag List

+ Reply to Thread
Results 1 to 7 of 7
Like Tree6Likes
  • 1 Post By shooternz
  • 2 Post By Marty Henry
  • 1 Post By Banana
  • 2 Post By Sasquatch

Thread: Filthy cases shooting suppressed (piston AR)

  1. #1
    Member
    Join Date
    Mar 2014
    Location
    Palmerston North
    Posts
    182

    Filthy cases shooting suppressed (piston AR)

    I've noticed that when I shoot suppressed I get quite alot of carbon blasting back into the action, enough so that the rounds in the magazine get cruddy too. If this is what a piston AR is like then I can't imagine what a DI gun is like? I have my gas regulator set to the lowest setting too but it doesn't make much difference.

    Without having done any research into the issue, And this being my first AR... My only guess is I need a heavier buffer? Like an H3 or an H3 silent? I'm guessing the back pressure from the suppressor is causing the bolt to open slightly before the piston hits it And some of the gasses still burning escape around the shell?
    Last edited by Macca; 05-09-2017 at 11:59 PM.

  2. #2
    Member
    Join Date
    Dec 2013
    Location
    Tokoroa
    Posts
    810
    The piston unlocks the bolt if the bolt opens too soon your gun would blowup, the back pressure from the suppressor blows the crap back into the action
    because it can't get all get out through the front end of the can,
    Banana likes this.

  3. #3
    P38
    P38 is offline
    Member P38's Avatar
    Join Date
    Dec 2011
    Location
    Hastings
    Posts
    5,717
    Macca

    It's an AR thing I guess

    The cases extracted from my AR and the first few rounds in the magazine are almost black after just one shot.

    I've just accepted it and moved on.

    Cheers
    Pete
    Arguing with an Engineer is like Wrestling a Pig in Mud.

    After awhile you realise the Pig loves it.

  4. #4
    Member Marty Henry's Avatar
    Join Date
    Oct 2014
    Location
    Tararua
    Posts
    3,328
    Have you tried reloading with smokless powder instead of 3f?
    P38 and Tommy like this.

  5. #5
    Member Mathias's Avatar
    Join Date
    Oct 2015
    Location
    Canterbury, home of the big Rakaia Red Stag
    Posts
    2,436
    Mine is a DI and when firing off a string any remaining rounds in the mag start changing colour. Brass cases start going green within an hour. Life with a suppressed AR, get used to it

  6. #6
    Member Banana's Avatar
    Join Date
    Sep 2013
    Location
    NZ
    Posts
    592
    Quote Originally Posted by Macca View Post
    I've noticed that when I shoot suppressed I get quite alot of carbon blasting back into the action, enough so that the rounds in the magazine get cruddy too. If this is what a piston AR is like then I can't imagine what a DI gun is like? I have my gas regulator set to the lowest setting too but it doesn't make much difference.

    Without having done any research into the issue, And this being my first AR... My only guess is I need a heavier buffer? Like an H3 or an H3 silent? I'm guessing the back pressure from the suppressor is causing the bolt to open slightly before the piston hits it And some of the gasses still burning escape around the shell?
    DI is pretty much the same as piston, the blow-back from the gas tube is relatively minimal. In either system the majority of the blow-back is a result of the bolt unlocking while there is still residual pressure in the bore. A piston AR will unlock sooner than a DI so slightly more blow-back will escape from the chamber.

    A heavier buffer will theoretically help decrease blow-back by delaying unlocking, but the difference will be barely noticeable. The A2 buffer is nearly the same weight as an H3, so if you've got an A2 tube on your gun already, an H3 isn't going to make any difference.
    Sasquatch likes this.

  7. #7
    Member Sasquatch's Avatar
    Join Date
    Nov 2014
    Location
    The Forest
    Posts
    1,643
    People get too caught up with DI guns claiming they are "dirtier" than piston guns especially in regards to shooting suppressed. How dirty they get isn't really much between the two systems and what is often missed is direct impingement AR's are slightly better in terms of accuracy.
    Mathias and Paddy79 like this.

 

 

Similar Threads

  1. Anyone out there shooting 6.5x55 suppressed ???
    By kiwi39 in forum Reloading and Ballistics
    Replies: 23
    Last Post: 05-05-2016, 04:18 PM
  2. Replies: 12
    Last Post: 09-04-2016, 01:07 PM
  3. Piston-type hydraulic decapper
    By Mauser308 in forum Reloading and Ballistics
    Replies: 11
    Last Post: 16-01-2015, 01:39 PM
  4. WTB: Suppressed .410
    By Spanners in forum Buy, Sell or Swap
    Replies: 0
    Last Post: 30-11-2014, 04:36 PM
  5. WTS - Adam Arm piston Kit Carbine Length
    By FletchNZ in forum Buy, Sell or Swap
    Replies: 6
    Last Post: 01-10-2013, 01:39 PM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Welcome to NZ Hunting and Shooting Forums! We see you're new here, or arn't logged in. Create an account, and Login for full access including our FREE BUY and SELL section Register NOW!!