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.

NZGR Knives Africa


User Tag List

+ Reply to Thread
Page 1 of 2 12 LastLast
Results 1 to 15 of 27
Like Tree4Likes

Thread: Bulge buster 40SW

  1. #1
    Member Tertle's Avatar
    Join Date
    Dec 2011
    Location
    Christchurch NZ
    Posts
    457

    Bulge buster 40SW

    Hey just wondering should I bulge bust my 40SW brass, and yes itís for the glorious glock Iíve read that I should not do it for my glock, gen two frame with gen 3 barrel.

    Thoughts?
    www.allaboutenfields.co.nz and www.facebook.com/AllAboutEnfields both dedicated to a great old rifle thatís still knocking them over!

  2. #2
    Member
    Join Date
    Jan 2013
    Posts
    30
    My own 0.02c

    Don't reload 40 S&W and use in a factory Glock barrel, it doesn't provide enough support to the case. Plenty of photos on the internet of glocks and exploded cases in .40 S&W.

    I use a G23 for IPSC, which has a Lone Wolf barrel in it which provides more support than a factory barrel. I always bulge bust my brass for it and also when I had an STI. Haven't had any issues yet but always visually inspect my sized, bulge busted brass before loading it.

    Again this is just my 0.02c

  3. #3
    Member
    Join Date
    Jun 2015
    Location
    christchurch
    Posts
    3,980
    Quote Originally Posted by bluemonsta View Post
    My own 0.02c

    Don't reload 40 S&W and use in a factory Glock barrel, it doesn't provide enough support to the case. Plenty of photos on the internet of glocks and exploded cases in .40 S&W.

    I use a G23 for IPSC, which has a Lone Wolf barrel in it which provides more support than a factory barrel. I always bulge bust my brass for it and also when I had an STI. Haven't had any issues yet but always visually inspect my sized, bulge busted brass before loading it.

    Again this is just my 0.02c
    you had an STI? penicillin normally fixes that

  4. #4
    Member Tertle's Avatar
    Join Date
    Dec 2011
    Location
    Christchurch NZ
    Posts
    457
    Quote Originally Posted by bluemonsta View Post
    My own 0.02c

    Don't reload 40 S&W and use in a factory Glock barrel, it doesn't provide enough support to the case. Plenty of photos on the internet of glocks and exploded cases in .40 S&W.

    I use a G23 for IPSC, which has a Lone Wolf barrel in it which provides more support than a factory barrel. I always bulge bust my brass for it and also when I had an STI. Haven't had any issues yet but always visually inspect my sized, bulge busted brass before loading it.

    Again this is just my 0.02c
    I appreciate that early glocks had issues around not having enough support around the base of the case, But I am curious to know whether or not they addressed this issue and later barrels, as surely they would have addressed this problem? I have purchased about 500 cases and have noticed some of them have obvious bulges, however after Inspecting the cases fired from my glock I have not noticed any with bulges, however these have only been visual inspections. I know the barrel I have in my Glock 22 is not the original barrel and from what I was told it was from a gen three.

    I appreciate that just by resizing my brass it will bring back the case to Near original size, which in itself will slightly stress the brass, how much extra would using a bulge buster increase that stress? Another silly question would be how much of an issue would be if I annealed the brass, admittedly a massive pain in the arse!

    The only reason I bring up the annealing process is because I am noticing a massive variance in velocity I am achieving when I have run my load development over a chronograph, the only variation is the manufacturer of the brass, I am using a Dillon 550 press and have experienced some quite big variations in feet per second, and was wondering if this is a problem with using old brass that has been fired a number of times and that it has lost its neck tension? If that make sense.
    www.allaboutenfields.co.nz and www.facebook.com/AllAboutEnfields both dedicated to a great old rifle thatís still knocking them over!

  5. #5
    R93
    R93 is online now
    Member R93's Avatar
    Join Date
    Feb 2012
    Location
    Westland NZ, PNG
    Posts
    13,484
    Interesting. How much velocity variation are you seeing?
    Have you done a comparison of a batch of new brass vs old to see if there is a consistent velocity difference?

    I basically load a batch of 500 that I only use for practice. I just keep loading it until I get a split case or some other issue. I find a case that I can no longer read the headstamp clearly, will generally split or no longer pass a drop test in the next few loads, so I biff them.

    I only load newish brass for competition and ensure that is running at PF during the winter. In turn knowing I will be above PF when most comps are scheduled during the warmer months. I still chrono to be safe and it is always higher than PF.

    Might have to chromo my practice stuff to see if there is a major difference.
    Might be a glock thing tho?

    Sent from my SM-G965F using Tapatalk
    Do what ya want! Ya will anyway.

  6. #6
    Member Tertle's Avatar
    Join Date
    Dec 2011
    Location
    Christchurch NZ
    Posts
    457
    Ok i need to preface what i have done, also ive been reloading for a wee while now. Ive shot FTR and am well aware of case volumes and neck tension, turning etc etc, ive even marked cases in the past at the 12 o'clock position on the base of the case to ensure the round was chambered in the same place ever shot, i even weighed cases bla bla.......

    the cases im shooting in the 40SW glock are of a mixed assortment of manufacturing, i also am shooting 9mm BUT these are all once fired Speer cases, this is whats giving me a control group and have a smaller variance i.e

    9mm String using ADI AP70N Dillion press
    1045
    1070
    1049
    1035
    1070
    1051
    1048

    my 40SW using ADI AP70N Dillion press
    879
    849
    742
    837
    737
    838
    857
    722
    852
    858
    737

    thought ok lets negate the press powder measure and dusted off the handy dandy RCBS Charge Master Combo, set it up left it for 30 mins and then calibrated. as i was after Major PF i went with the following loads

    5 5.1 5.2
    933 891 error
    874 930 914
    865 857 943
    860 927 934
    895 857 917
    930
    (having issues lining up the above but 930 is in the middle string at 5.1)

    now as i have just sat down and done the maths, first two loads have a variance of 73fps which is interesting and the last 29, yes a shorter string with the last load but still makes me wonder a couple of things

    my OAL is off the top of my head is 1.140 and this was done to reduce freeborn to rifling, and i assumed that in doing so would have reduced velocity and pressure, so has my reduction in case volume by increasing the powder charge "stabilised" the detonation of the powder and in turn given a better consistent FPS?

    the pain in the butt is my preferred most accurate load is 4.9 and as you can imagine isn't within a bull roar of the PF im after!

    actually after sitting down and writing this i think ive negated the brass haven't i !!!!!!!

    so.......as im just going baby steps, do i retest with an OAL of 1.130, Then possibly a gentle increase of crimp.........or stop being a tight prick and get a different powder? and yes Bill if your reading this I KNOW
    www.allaboutenfields.co.nz and www.facebook.com/AllAboutEnfields both dedicated to a great old rifle thatís still knocking them over!

  7. #7
    Member Tertle's Avatar
    Join Date
    Dec 2011
    Location
    Christchurch NZ
    Posts
    457
    @R93

    This the wear I noticed at the time the rod snapped!

    Name:  B11B905B-B84B-4421-BB4A-D54E669E71A9.jpeg
Views: 143
Size:  1.07 MB
    Name:  64A29418-69EF-4797-9520-EB42E3636F7F.jpeg
Views: 141
Size:  890.4 KB
    www.allaboutenfields.co.nz and www.facebook.com/AllAboutEnfields both dedicated to a great old rifle thatís still knocking them over!

  8. #8
    R93
    R93 is online now
    Member R93's Avatar
    Join Date
    Feb 2012
    Location
    Westland NZ, PNG
    Posts
    13,484
    To me that looks like damage from the slide hitting the mag lips. Or vise versa.
    Worn mag catch or worn mag catch slots in magazine allowing mag to be seated higher than normal. Smashing mag into gun when slide locked back.

    Could be wrong as you would normally see where the mag has hit the slide further back from speed reloads.

    Edit: Just looked at a gen 4 19 I hide at the back of my safe.
    I can't see how a mag would do that damage as on the 19 it is only plastic parts of the mag that could contact that area.



    Sent from my SM-G965F using Tapatalk
    Last edited by R93; 10-06-2018 at 08:30 PM.
    Do what ya want! Ya will anyway.

  9. #9
    OPCz Rushy's Avatar
    Join Date
    Jun 2012
    Location
    Nor West of Auckland on the true right of the Kaipara River
    Posts
    26,110
    OK educate an old fart. PF = ?
    It takes 43 muscle's to frown and 17 to smile, but only 3 for proper trigger pull.
    What more do we need? If we are above ground and breathing the rest is up to us!
    Rule 1: Treat every firearm as loaded
    Rule 2: Always point firearms in a safe direction
    Rule 3: Load a firearm only when ready to fire
    Rule 4: Identify your target beyond all doubt
    Rule 5: Check your firing zone
    Rule 6: Store firearms and ammunition safely
    Rule 7: Avoid alcohol and drugs when handling firearms

  10. #10
    R93
    R93 is online now
    Member R93's Avatar
    Join Date
    Feb 2012
    Location
    Westland NZ, PNG
    Posts
    13,484
    Quote Originally Posted by Rushy View Post
    OK educate an old fart. PF = ?
    Power Factor.

    Sent from my SM-G965F using Tapatalk
    Do what ya want! Ya will anyway.

  11. #11
    OPCz Rushy's Avatar
    Join Date
    Jun 2012
    Location
    Nor West of Auckland on the true right of the Kaipara River
    Posts
    26,110
    Quote Originally Posted by R93 View Post
    Power Factor.

    Sent from my SM-G965F using Tapatalk
    Thanks. Relative to speed or knock down energy ( fps or ft lbs )?
    It takes 43 muscle's to frown and 17 to smile, but only 3 for proper trigger pull.
    What more do we need? If we are above ground and breathing the rest is up to us!
    Rule 1: Treat every firearm as loaded
    Rule 2: Always point firearms in a safe direction
    Rule 3: Load a firearm only when ready to fire
    Rule 4: Identify your target beyond all doubt
    Rule 5: Check your firing zone
    Rule 6: Store firearms and ammunition safely
    Rule 7: Avoid alcohol and drugs when handling firearms

  12. #12
    R93
    R93 is online now
    Member R93's Avatar
    Join Date
    Feb 2012
    Location
    Westland NZ, PNG
    Posts
    13,484
    Quote Originally Posted by Rushy View Post
    Thanks. Relative to speed or knock down energy ( fps or ft lbs )?
    Bullets mass x velocity divided by 1000 will give power factor.

    All to do with recoil impulse and scoring. Hence major and minor PF.

    Sent from my SM-G965F using Tapatalk
    Do what ya want! Ya will anyway.

  13. #13
    OPCz Rushy's Avatar
    Join Date
    Jun 2012
    Location
    Nor West of Auckland on the true right of the Kaipara River
    Posts
    26,110
    Ok thanks. Just like most of my time at school
    Name:  image.jpeg
Views: 140
Size:  31.1 KB
    It takes 43 muscle's to frown and 17 to smile, but only 3 for proper trigger pull.
    What more do we need? If we are above ground and breathing the rest is up to us!
    Rule 1: Treat every firearm as loaded
    Rule 2: Always point firearms in a safe direction
    Rule 3: Load a firearm only when ready to fire
    Rule 4: Identify your target beyond all doubt
    Rule 5: Check your firing zone
    Rule 6: Store firearms and ammunition safely
    Rule 7: Avoid alcohol and drugs when handling firearms

  14. #14
    R93
    R93 is online now
    Member R93's Avatar
    Join Date
    Feb 2012
    Location
    Westland NZ, PNG
    Posts
    13,484
    Quote Originally Posted by Rushy View Post
    Ok thanks. Just like most of my time at school
    Attachment 89118
    Uncle Google is your friend Rushy.
    Would explain it better than I could.


    Sent from my SM-G965F using Tapatalk
    Do what ya want! Ya will anyway.

  15. #15
    Almost literate. veitnamcam's Avatar
    Join Date
    Dec 2011
    Location
    Nelson
    Posts
    19,045
    Quote Originally Posted by Rushy View Post
    Ok thanks. Just like most of my time at school
    Attachment 89118
    I thought you shot 3 gun and stuff competitively or had a go etc?
    Rule 3: Load a firearm only when ready to fire

    Chicken Intolerant.

 

 

Similar Threads

  1. Swap: .40sw Square deal conversion
    By Tommy in forum Buy, Sell or Swap
    Replies: 1
    Last Post: 15-04-2018, 11:38 AM
  2. WTB: PRI gas buster charging handle
    By Apocalypticaman in forum Buy, Sell or Swap
    Replies: 3
    Last Post: 01-11-2017, 07:07 PM
  3. looking for a wallaby buster :D
    By MackaS in forum Buy, Sell or Swap
    Replies: 40
    Last Post: 04-07-2014, 05:58 PM
  4. Marriage Buster 101
    By Tahr in forum Hunting
    Replies: 20
    Last Post: 25-04-2014, 11:26 AM
  5. Bunny Buster Suppressor 2.0
    By JoshC in forum Buy, Sell or Swap
    Replies: 0
    Last Post: 14-11-2013, 11:07 AM

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!!