Opinions please.
Page 1 of 2 12 LastLast
Results 1 to 10 of 11
Like Tree16Likes

Thread: Opinions please.

  1. #1
    Supporting Member

    Member #
    3317
    Join Date
    May 2008
    Location
    Katy, Tx.
    Posts
    10,404
    Liked
    17367 times

    Opinions please.

    I just put together an AR/LR 10 in 308. During my first range trip I had feeding problems with my reloads. Out of the 50 rounds I had taken with me I had only used 30 or so because of rounds not chambering. All of the factory ammo I had (Tula) chambered and cycled, no problem. I came home, pulled the bullets and primers and resized and trimmed each piece of brass. I made some dummy rounds and tried feeding them and the same problem occurred. I removed the barrel and dropped different factory ammo in and used the bolt to seat the rounds. No problem chambering until I tested my dummy rounds and they will not chamber. I'm using a 168 gr bullet, but everything mics out to spec. It's got to be the reloaded brass right? Should I try a different brand of sizing die? All the brass I've got has been sitting in an ammo can for years, but I don't really see that as affecting anything. Any ideas?
    Children, pets, and slaves get taken care of. Free Men take care of themselves.


    When Democracy turns to Tyranny

    I still plan to vote.






  2. #2
    Super Moderator

    Member #
    5628
    Join Date
    Dec 2008
    Posts
    32,752
    Liked
    42020 times
    I was going to suggest wall thickness of the once fired brass, but if you're calibrating the OD at the neck and it's within spec that shouldn't make any difference. Measuring the factory to the handloaded round may suggest an answer. I don't load .308..yet.
    “…democratic socialism, the great utopia of the last few generations, is not only unachievable but that to strive for it produces something utterly different – the very destruction of freedom itself. As has been aptly said: ‘What has always made the state a hell on earth has been precisely that man has tried to make it his heaven.'” F.A. Hayek

  3. #3
    Senior Member
    Member #
    15888
    Join Date
    Oct 2010
    Location
    Pure Apalachia (PA)
    Posts
    2,244
    Liked
    1928 times
    Take one of your reloaded dummy rounds and coat it with prussian blue (the machiist's friend) and try to chamber it . Where the blue rubs through is a tight spot. Your brass may not be resized completely just forward of the case head, due to being fired in an "oversized chamber.

    The next issue I would try is the length at the shoulder - I once had a Rem 760 that had a chamber at minimum length at the shoulder, and it reuired full-length resizing.

    Also, check case dimensions against some of your recently fired cases. There will besome "springback" after firing, but probably not eough to alter your measurements/comparisons.

    It would be neat if you had the use of an "optical comparator" with a magnificatio of 5x or so.
    Czechbikr likes this.
    You must be careful what you pretend to be, because in the end, you are what you pretend to be.
    ....................Kurt Vonnegut, in "Mother Night"

    All governments suffer a recurring problem: Power attracts pathological personalities. It is not that power corrupts but that it is magnetic to the corruptible. Such people have a tendency to become drunk on violence, a condition to which they are quickly addicted. . . . . . . . . . . . .. — Frank Herbert, Chapterhouse: Dune

  4. Remove Advertisements
    TaurusArmed.net
    Advertisements
     

  5. #4
    Senior Member
    Member #
    11801
    Join Date
    Jan 2010
    Location
    Metro Atlanta Georgia
    Posts
    34,860
    Liked
    27410 times
    I would suggest not to get "Tunnel Vision" on just the cases!
    take a look at the projectile, not only the OAL but also the taper of the nose.
    IF the projectile is to fat to fast for the guns chamber then thats the problem, also check your crimp but my guess would lean to you needing to check the projectile and try slightly increasing seating depth until it chambers correctly.
    william, Czechbikr, CJS3 and 1 others like this.
    Retired Firefighter, Advanced Georgia Master Gardener, Hazardous Material Response Member, Certified Hazardous Material Incident Commander, 1911 Addict and General Gun Lover.
    Currently Professionally Retired Old Person.

  6. #5
    oso
    oso is offline
    Senior Member
    Member #
    22503
    Join Date
    Nov 2011
    Location
    N.E. OHIO
    Posts
    2,075
    Liked
    1645 times
    Well if this ^^^^^ does not work I would try small base die set.


    https://www.midwayusa.com/product/1011284542?pid=473959
    CJS3, stupimlico and str8wheel like this.

  7. #6
    Senior Member
    Member #
    22402
    Join Date
    Nov 2011
    Location
    Springfield, Mo.
    Posts
    1,545
    Liked
    1648 times
    You might try Hornady's Head Space guage and set the shoulder .002 back from cases fired in that chamber
    stupimlico likes this.
    "They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety." -Ben Frankin-

  8. #7
    Supporting Member

    Member #
    3317
    Join Date
    May 2008
    Location
    Katy, Tx.
    Posts
    10,404
    Liked
    17367 times
    I was looking at the cases again this evening (yes I did check bullet size and shape with calipers) and noticed that almost all of them had a barely perceptible dimple halfway down the case side. I realized then that all the 308 brass in that can, the one I had loaded all my range ammo with, had been the brass I used for my Saiga 308 win AK. I'm guessing that the chamber, like all Russian made rifles, had plenty of slop built in so that there wouldn't be any failure to feed or ejection issues. The thing I remember about the ejected brass is that the cover on the receiver would cause a dimple on the brass when the ejected cases hit the cover. I'm going to try a small base sizing die as suggested, and load 10 or so rounds for my next range trip. If they work I'll give the same treatment to all the 308 brass in that can. If it doesn't, well I've got an unopened bag of new 308 brass, and I'll pick up the cases from the 308 ammo I recently bought, after I've shot them. It just gives me the shivers to get rid of 150 brass cases. I guess I could load them for my 1916 Spanish, but I rarely shoot that.

    Thanks for the input.
    Czechbikr and oso like this.
    Children, pets, and slaves get taken care of. Free Men take care of themselves.


    When Democracy turns to Tyranny

    I still plan to vote.






  9. #8
    Senior Member
    Member #
    40722
    Join Date
    Jan 2014
    Location
    Central Virginia
    Posts
    2,044
    Liked
    3226 times
    I was gonna suggest small base dies and a case gauge.

    Sent from my SM-G960U using Tapatalk
    jwc007, oso and CJS3 like this.
    PT111 G2
    PT92 AFS

  10. #9
    Senior Member
    Member #
    22402
    Join Date
    Nov 2011
    Location
    Springfield, Mo.
    Posts
    1,545
    Liked
    1648 times
    Is the sizing you're using full length or neck sizing die?
    "They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety." -Ben Frankin-

  11. #10
    Senior Member
    Member #
    15888
    Join Date
    Oct 2010
    Location
    Pure Apalachia (PA)
    Posts
    2,244
    Liked
    1928 times
    Well, if yu re going to start at the botttom, FIRSTjust try a freshly resized case - BY ITSELF!


    Then,SECOND, Olfarhrse's suggestio of the riling being not relieved enough for the ogive of the projectile you are using. (here's where the russin blue will work) and see if the projectile hits the rifling.


    Then, ext rty the gage. and go onfrom there.
    olfarhors likes this.
    You must be careful what you pretend to be, because in the end, you are what you pretend to be.
    ....................Kurt Vonnegut, in "Mother Night"

    All governments suffer a recurring problem: Power attracts pathological personalities. It is not that power corrupts but that it is magnetic to the corruptible. Such people have a tendency to become drunk on violence, a condition to which they are quickly addicted. . . . . . . . . . . . .. — Frank Herbert, Chapterhouse: Dune

 

 
Page 1 of 2 12 LastLast

Sponsored Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •