Titan ReloadingRotoMetals2Lee PrecisionMidSouth Shooters Supply
ADvertise hereGraf & SonsStainLess Steel MediaInline Fabrication

Page 1 of 2 12 LastLast
Results 1 to 20 of 27

Thread: 45 acp ar upper

  1. #1
    Boolit Bub
    Join Date
    Feb 2014
    Location
    kansas
    Posts
    22

    45 acp ar upper

    Hope this is right forum to ask! I have a 45 acp upper I am reloading for with a noe 200gr HP mold. I am using tightrope with 5gr. Powder coated. I am getting soot on ever case, am getting got accurate shoots out to75 and 100yards. Same load I shoot out of several pistols with no soot. Any help or ideas I would appreciate

  2. #2
    Boolit Master maxreloader's Avatar
    Join Date
    Jan 2015
    Location
    Southern March 15th, 1820
    Posts
    499
    Quote Originally Posted by bobby View Post
    Hope this is right forum to ask! I have a 45 acp upper I am reloading for with a noe 200gr HP mold. I am using tightrope with 5gr. Powder coated. I am getting soot on ever case, am getting got accurate shoots out to75 and 100yards. Same load I shoot out of several pistols with no soot. Any help or ideas I would appreciate
    Shooting while using a tightrope must be be pretty tricky!
    Looking for Ideal molds 419181 (44 Evans Long) and 375167 (38-72)
    My Feedback is HERE

  3. #3
    Boolit Master
    Join Date
    Jun 2013
    Posts
    184
    I guess tightrope is tighgroup, regardless. Soot usually means not enough pressure to seal the case; it's not going to harm anything and if it's accurate for you I'd leave it at that.

  4. #4
    I'm following this post closely. I get soot on my 9mm ar9 brasss, but none on the same rounds fired from pistol. On the not enough pressure note...are we talking crimp pressure or dwell time in the chamber..pressure?

  5. #5
    Boolit Bub
    Join Date
    Feb 2014
    Location
    kansas
    Posts
    22
    Maxreloader yes titegroup, sorry typing on phone.

  6. #6
    Boolit Master Butchman205's Avatar
    Join Date
    Feb 2015
    Posts
    298
    If it were me, I’d check published data to see if there was room to bump the load up a tad. Also look for pressure signs on brass, primers etc. I’ve had several loads that were fairly accurate but dirty/sooty as ****. Bump up the load a tad, and the powder burns cleaner...like surprisingly cleaner.
    •WARNING-check the load data for safety. I once had an electric scale that measured 0.7-0.8 grains light before it warmed up properly. With Titegroup, 0.8gr is a significantly big difference on 45acp.


    -Butchman

  7. #7
    Boolit Man
    Join Date
    Oct 2013
    Posts
    127
    Highly likely that the 45 ACP AR upper is blowback.
    Blowback guns typically have more sooty brass than locked breach guns.

    Is you AR recoil buffer heavy enough?
    It should be around 7 or 8 Oz.
    Lookup the weight of the Hahn AR 45 buffer.

    Also an extra power recoil spring is a good idea.
    The spring and the recoil buffer are the only thing keeping the chamber closed.
    More spring pressure and buffer weight means less soot on brass.

  8. #8
    Boolit Master

    jcren's Avatar
    Join Date
    Nov 2014
    Location
    South, Central Ok
    Posts
    1,581
    I think edp2k nailed it. My hi-point carbine was sooty and had some unburned powder with my lighter pistol loads. Bumped my 4.2 of red dot to 4.6 and gained 150 fps and clean cases. My 200 grain bullet blue dot loads won't work worth a dang in the blowback action, wide velocity spread and lots of unburned.
    "In God we trust, in all others, check the manual!"

  9. #9
    Boolit Master
    Join Date
    Feb 2015
    Posts
    618
    Are you getting god accuracy or not? I can't tell from the original post.

    Titegroup is known for getting a scorched case. If your getting good accuracy I wouldn't worry too much. If your not getting good accuracy I'd try a different load.

  10. #10
    Boolit Master Gunslinger1911's Avatar
    Join Date
    Dec 2009
    Location
    Central Ohio
    Posts
    748
    Hodgdon site says you can go 5.4g Titegroup with a 200g cast.
    http://www.hodgdonreloading.com/data/pistol
    As said above, prob a little more pressure needed.

    Just curious, what make 45 AR do you have ? I have an Olympic Arms - very happy with it.
    Cogno, Ergo, Boom

    If you're gonna be stupid, don't pull up short. Saddle up and ride it all the way in.

  11. #11
    Boolit Bub
    Join Date
    Feb 2014
    Location
    kansas
    Posts
    22
    reddog81 yes I am getting very good accuracy out of this load

  12. #12
    Boolit Bub
    Join Date
    Feb 2014
    Location
    kansas
    Posts
    22
    gunslinger I have the same upper. I am happy with it also. only problem I have with it is that my bolt carrier bent my bolt catch when it locks open. so I had to get a more robust locking catch

  13. #13
    Boolit Bub
    Join Date
    Feb 2014
    Location
    kansas
    Posts
    22
    edp2k thanks I will look that up today and check. I know I but a light spring in to stop it from bending my bolt lock as I had to replace that

  14. #14
    Boolit Bub
    Join Date
    Feb 2014
    Location
    kansas
    Posts
    22
    gunslinger I was just being lazy I might have to just load for rifle and pistols separately

  15. #15
    Boolit Master Gunslinger1911's Avatar
    Join Date
    Dec 2009
    Location
    Central Ohio
    Posts
    748
    Haha, lazy isn't always bad !!
    I run a 200g cast hp as my standard 45acp.
    I load 5.4g 231 which is just under max for cast.
    Now the bolt catch is an interesting comment, I noticed mine wasn't locking open all the time last shooting session - something to look into, thanks !

    What's your take on the Olympic mags ?
    H. E. double hockey sticks to load more than 10 !
    Thats one stiff spring !
    Cogno, Ergo, Boom

    If you're gonna be stupid, don't pull up short. Saddle up and ride it all the way in.

  16. #16
    Boolit Bub
    Join Date
    Feb 2014
    Location
    kansas
    Posts
    22
    same here! by the time I get to 15 round finger are sore. about all I will load. I seen they had a adapter to load the but not cheap.

  17. #17
    Boolit Bub
    Join Date
    Feb 2014
    Location
    kansas
    Posts
    22
    yes that is how I noticed my catch bent it stop holding bolt open. them was hard to move catch by fingers. took it out laid it on flat surface. it was bent forward beat it flat worked for awhile! after a few mags though it started to do it again. so I shorted my spring a little and bought a more stout catch

  18. #18
    Boolit Master Moleman-'s Avatar
    Join Date
    Jul 2016
    Location
    SW Michigan next to a winter wheat field
    Posts
    490
    Try a longer 9-10 oz blowback pistol buffer. Should keep the bolt closed longer and limit how far the BCG goes so that it doesn't go back as far/fast because of the additional weight, and is longer so the bolt and buffer don't have as much of a running start before hitting the bolt catch. Here's a 7.8 oz ss one I've made for a 9mm I run suppressed. Kak has adjustable weight ones that go up to 10 oz.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	7.8ozbufferss.JPG 
Views:	7 
Size:	82.1 KB 
ID:	210771  

  19. #19
    Boolit Bub
    Join Date
    Feb 2014
    Location
    kansas
    Posts
    22
    moleman thank you. i will look into that.

  20. #20
    Boolit Master Moleman-'s Avatar
    Join Date
    Jul 2016
    Location
    SW Michigan next to a winter wheat field
    Posts
    490
    Thought I added the link......Guess I need more coffee https://www.kakindustry.com/ar-15-pa...-buffer-system

    IMO they're not worth the price, if you have a lathe they're simple enough to make and they sell the rubber bumpers for $1 each if you want to make your own. You can get the tungsten weights to put in it.

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check