Brass Prep for long range accuracy

Discussion in 'Long Range Hunting & Shooting' started by Steve Sheasly, Sep 11, 2019.


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  1. Orange Dust

    Orange Dust Well-Known Member

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    These are pretty interesting. I have a forster shoulder bump die, full length, and bench rest seater. Also sinclair neck expanding die. I can get less runout with the fl die without the expander, and expanding with the sinclair die, than using the bump die with bushing. RCBS press. Are you using their bushing or solid die? What are you seeing in runout in the finished cartridge? And what press are you using?
     
  2. Orange Dust

    Orange Dust Well-Known Member

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    Just putting this out there. 40 years ago it was pretty much rcbs dies or custom. I was taught this for standard rcbs dies, and you can load some pretty accurate ammo this way... set up the sizer with a nickle of clearance between it and the shell holder. Size a case and see if it will chamber. If not, lower the die until the bolt will close with some, but light resistance. Set up the seater normally but only seat about 1/3 the way. Turn the case about 1/3 counter clockwise and seat about another 1/3. Repeat and seat to final depth. Much easier to do and show than type. You would be surprised just how good ammo you can load with standard dies, partial resizing and then seating this way. Bolt action rifles only though.
     
    Rick Richard likes this.
  3. Steve Sheasly

    Steve Sheasly Well-Known Member

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    Exactly. Depending on temperature humidity and altitude my groups range from 2 to 10 inches or 1 moa. If I can't dope the shot I don't take,it. Usually on elk. Deer are almost,always under 600 yards.
     
    Doug Herold likes this.
  4. Steve Sheasly

    Steve Sheasly Well-Known Member

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    Yes you can. Well said
     
  5. Orange Dust

    Orange Dust Well-Known Member

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    There are some pretty wild claims on this thread. Intertwined is some really good stuff
     
  6. Steve Sheasly

    Steve Sheasly Well-Known Member

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    True story. It took me a long,long long time to even attempt 1000 yards. I was intimidated to tell the truth.
     
  7. lancetkenyon

    lancetkenyon Well-Known Member

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    Some are consistent and repeatable.
    This is my .280AI lightweight hunting rifle. 175 Elite @ 2975fps
    [​IMG]

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    545 yards
    [​IMG]

    851 yards
    [​IMG]
    [​IMG]

    921 yards
    [​IMG]

    921 yards, 5 shots.
    [​IMG]
     
  8. lgordee

    lgordee Well-Known Member

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    Bushings. Have a Harrell's press for smaller cases, Redding Big Boss for longer cases. Arbor press with Wilson dies for seating. I don't check run-out any more. Only hunting and not shootings competition. My run-out gauge setup is gathering dust.
     
  9. Steve Sheasly

    Steve Sheasly Well-Known Member

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    Over the years I have bought and tossed a lot,of equipment. I do like my Franklin Arsenal her as,prep station.
     
    lancetkenyon likes this.
  10. Steve Sheasly

    Steve Sheasly Well-Known Member

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    40 years can pass quickly.
     
  11. Orange Dust

    Orange Dust Well-Known Member

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    Aint that the truth. No idea where it went.
     
  12. Stgraves260

    Stgraves260 Well-Known Member

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    I don’t even use bushings. I only full length size new brass. After that I neck size only. There are good died out there but I only use ( Redding Premium Die Sets ) it’s the black box. I get 5 rounds in same hole in my 260 Rem,243 Win, 22-250, 6.5 Creedmoor, 220 Swift. My 7 Mag and 300 Win Mag I can get under 1/2” 5 shot groups. Sometimes 1/4” groups. I’ve shot all my guns at 1000 yards. My 260 Rem, 243 Win, 7 Mag and 300 Win Mag I have shot past 1000 yards. I just don’t see how you can shoot better than hole in hole.
     
    lancetkenyon likes this.
  13. highdrum

    highdrum Well-Known Member

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    Eventually you'll need to bump the shoulder, it's inevitable. If you're throwing you're cases away after 3-5 reloads I guess you can go for it. A 300wm will grow ahead of the belt within 5-6 firings to the point of needing FL sized as well. I have rifles that unless I bump shoulder, once fired brass will not chamber, and it's not the neck. Going around touting to just neck size isn't practical.
     
  14. rfurman24

    rfurman24 Well-Known Member

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    If this is the case why are you not cleaning up the benchrest circuit?
     
    Last edited: Sep 15, 2019
    Orange Dust and highdrum like this.