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Thread: 7.62X39 cast in AR-15 rifles/

  1. #21
    Boolit Grand Master Texas by God's Avatar
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    Good news/ bad news. I jerked the trigger at #4 of 7 here. They will shoot! Unfortunately they won't feed. I have some proper profile boolits on the way, but I tried this hunting boolit first for grins.

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  2. #22
    Boolit Grand Master Texas by God's Avatar
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    WELL...... I seated them out to 2.05" but most importantly used a good magazine! I got two new Midway mags and one is going back. I ran these thru like goose grease and I like it. 40 yards, 10 shots.

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  3. #23
    Boolit Grand Master Texas by God's Avatar
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    I've loaded some more with the same powder charge of the OP- 25grs of 3031- a favorite 30-30 load. I think I've found my hunting load. About 2000 fps according to Hornady.

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  4. #24
    Boolit Master



    Crash_Corrigan's Avatar
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    Winchester M1: If you ever have a untreatable attack of stupid you have a ready buyer for that rifle right here in Las Vegas. That is excellent accuracy in any rifle but more so with a Ruger Ranch Rifle. HooRah!
    Pax Nobiscum Dan (Crash) Corrigan

    Currently casting, reloading and shooting: 223 Rem, 6.5x55 Sweede, 30 Carbine, 30-06 Springfield, 30-30 WCF, 303 Brit., 7.62x39, 7.92x57 Mauser, .32 Long, 32 H&R Mag, 327 Fed Mag, 380 ACP. 9x19, 38 Spcl, 357 Mag, 38-55 Win, 41 Mag, 44 Spcl., 44 Mag, 45 Colt, 45 ACP, 454 Casull, 457 RB for ROA and 50-90 Sharps. Shooting .22 LR & 12 Gauge seldom and buying ammo for same.

  5. #25
    Boolit Grand Master Texas by God's Avatar
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    I was astonished at WinchesterM1's accuracy- until I realized he was referring to a Ruger American rifle- NOT the Mini- 30 ranch rifle!

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  6. #26
    Boolit Buddy JMax's Avatar
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    I just got an ARStoner upper in 7.62X39 from Midway plus a few 10rd mags and a 30 rd for fun. I use a lee 312-155 aluminum gas checked sized to .312" using Lyman moly lube OAL 2.145". I have IMR4227 and my accuracy load for my CZ527 is 15 gr of IMR 4227. I got reliable cycling with loads down to 14 gr of 4227 in 10 rd mags but best performance at 15gr using a 30 rd mag. With 500+ rounds of casting just run a dry patch down the bore and it a mirror. Groups were running under 2" at 50 yards until my dot sight decided to stop working. I can pick pieces of clay pigeons all day at 50 yards and pigeons at 100 yards. Too much fun. When I get my dot back I will continue optimizing this combination.
    Last edited by JMax; 06-20-2019 at 08:01 PM.

  7. #27
    Boolit Grand Master popper's Avatar
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    reliable cycling with loads down to 14 gr of 4227 Hmm. 13gr in a BO? After I de-lead the barrel - pushed them way too fast. Been looking for a plinker load under a 145gr PB.
    Whatever!

  8. #28
    Boolit Grand Master Texas by God's Avatar
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    I shot 3 -3shot groups in the microwave heat that is North Texas yesterday. 25grs of 3031 with the C309150F PC'd went 1", Wolf fmj went 1", and dead last at 3"+ was the C312155 with conventional lube plus LLA over 20grs of AA1680. By then I'm soaking wet from sweat so I retreated to ice tea and AC. All shooting done @40 yds on sandbags.
    I. Hate. Summer.

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  9. #29
    Boolit Buddy JMax's Avatar
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    Quote Originally Posted by popper View Post
    reliable cycling with loads down to 14 gr of 4227 Hmm. 13gr in a BO? After I de-lead the barrel - pushed them way too fast. Been looking for a plinker load under a 145gr PB.
    Popper I hope you use a soda can gas check, I use checks on all my gas guns and have no leading.

  10. #30
    Boolit Master
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    Looks like jmax just answered curators question. Conventional lube and a ar15 platform. Let’s pay attention to that folks. The myth debunked.

  11. #31
    Boolit Grand Master popper's Avatar
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    19gr 4227 is a book load but not for soft PB alloy. With harder alloy I get moa @ 100, 2100 fps. Just tinkering here. When you get a puff of smoke & no hole on target, yea, screwed up. Chore boy time. Done it before, this wont be the last
    Whatever!

  12. #32
    Boolit Grand Master Texas by God's Avatar
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    I think these will work for close range deer/ pig. 50/50 coww/ lead PC Lee 150fp sized .311" over 25 grs of IMR 3031. I put 5 into 2"@100yds yesterday. Not my best effort but it'll hunt.

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  13. #33
    Boolit Buddy
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    Yeah I have 2 of the Ruger American ranch rifle 7.62x39s. One is set up for 400 yards and one is set up for hunting, I also have a upper I built for an AR in what I call 7.62x38 ultra its a straight walled ackley improved 7.62x39 it allows for 7 more grn of powder in the case which gets me a 150 grn bullet to about 2450-2500fps with the right brass
    Here it is next to a normal case
    Click image for larger version. 

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    The best part about the upper is that I can use Tula or Wolf polyproformance (which keeps 1MOA for me out of my RAR) and it shoots and cycles normal 7.62x39 no problem but I can also load it to ALMOST mimic lower 308 loads

    BTW the alloy I was using for that expanded boolit was 50/50 WW/PB with some Tin I have killed 3-4 deer a year for the past 3 years with that same load and they all just drop other than that doe last year that moved 20 feet or so
    Last edited by WinchesterM1; 08-08-2019 at 03:02 PM.

  14. #34
    Boolit Grand Master Texas by God's Avatar
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    Did you have a reamer made or is it available as a rental? 150@2500 is tempting.

  15. #35
    Boolit Grand Master Texas by God's Avatar
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    I shot these from a sitting position at 100 yards. I like this load. (C309150F. 311" PC /25grs of 3031)
    The pipe is 3/4" for scale

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  16. #36
    Boolit Buddy
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    Just wrote this up 2 weeks ago. My 7.62x39 load. Also use the lee 160 grain .312. It's very good.

    http://castboolits.gunloads.com/show...10-Been-awhile

  17. #37
    Boolit Master

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    I have seen improved 7.62 x 39 cases shown elsewhere. Kind of like a 6.5 grendel opened up to 30 cal. I think they call it the 30 major. I think it would be great in an AR

  18. #38
    Boolit Grand Master Texas by God's Avatar
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    I'm trying the Lee 155gr at .311" over 20grs of Acc1680 and the RCBS 32-115(122 grs)313" over 19 hrs of IMR 4198. The latter is fat in the nose so had to be seated deeper than I wanted.
    I hope to try them soon.

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  19. #39
    Boolit Master
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    Me wants that x39 improved or whatever they call it. I am using a BCA barrel and fighting it all the way but it is starting to come around. I had a heavy trigger that was hurting the accuracy but I keep working on it and much better now. I gotta get a can of 3031.
    Look twice, shoot once.

  20. #40
    Boolit Grand Master Texas by God's Avatar
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    Hot, dry wind so why not shoot? I'd just laid 900' of gas line so fatigue may have.....never mind. Apologies - but Hornady has loads for .308" jwords so I tried some. I'm not that impressed. The cast loads weren't good either except the load I just knew Would Not group- the .309" PC Lee 155. I'm going back to the C309150F (PC)sized .311" over 25gr/3031. The six shot mixed boolit group with the 22-250 was fun; shooting at a 1" sharpie dot with my .41 was a waste of time( not the gun!)

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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