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Thread: 262 or 268 necks for 6mm PPC

  1. #16
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    Dec 2017
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    GENE, i am not saying it ain't so, i just know no one that shoots no turn in long range bench rest.
    my dasher is a turned neck as is my 300 win mag.
    my 2000 yard br rifles are/will be both neck turned.

    if nothing else neck tension goes to crap with unturned necks.
    which affects down range point of impact big time.

    Quote Originally Posted by Gene Beggs View Post
    The long-range benchresters often use no-turn chambers in their versions of the 6 BR. No one is more anal than the thousand yard shooters and they are shooting some phenomenal groups with no-turn necks.

  2. #17
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    Quote Originally Posted by retired View Post
    GENE, i am not saying it ain't so, i just know no one that shoots no turn in long range bench rest.
    my dasher is a turned neck as is my 300 win mag.
    my 2000 yard br rifles are/will be both neck turned.

    if nothing else neck tension goes to crap with unturned necks.
    which affects down range point of impact big time.


    Retired, I don't remember no-turn necks being mentioned here on BR Central but I've read several times on the 6mmbr.com website where shooters have set records with them and their versions of the 6BR. I wish I had the computer skills to search the articles out and present them here, but sadly I do not. I'm doing good to be able to post here on the forum.

    No-turn cases are not for everyone; most benchresters wouldn't think of it, but I've sure had fun experimenting with it. I'm sort of a myth buster at heart and although I'm no Tony Boyer, I've had a fair amount of success during the past thirty years. I get bored following the leaders and often venture off on my own looking for better ways of doing things. Usually I fail, but you would be surprised with things I've discovered on some of my 'wild goose chases.'

    Thanks for posting. I value your input.

    Gene Beggs

  3. #18
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    No-turn cases are not for everyone; most benchresters wouldn't think of it, but I've sure had fun experimenting with it. I'm sort of a myth buster at heart and although I'm no Tony Boyer, I've had a fair amount of success during the past thirty years. I get bored following the leaders and often venture off on my own looking for better ways of doing things. Usually I fail, but you would be surprised with things I've discovered on some of my 'wild goose chases.'

    Thanks for posting. I value your input.


    Gene Beggs[/QUOTE

    Thanks for posting your findings and thoughts. You are a true gentleman.
    Last edited by sdean; 11-05-2018 at 03:27 AM.

  4. #19
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    Quote Originally Posted by Gene Beggs View Post
    Jerry, I may be mistaken but I thought Tony Boyer shot a .268 neck. Oh well, Tony could shoot just as well with anything. He is a legend the likes of which we will never see again and he's still up there at the cutting edge. Incredible !

    As Wilbur said in his post number four of this thread, "I swear that I don't think it matters what the neck size is."

    Well said Wilbur, I agree.

    Gene Beggs

    Gene, read Tonys book . He mentions. several times,he and Fays shoot a 0.263" neck.

    .

  5. #20
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    Quote Originally Posted by Gene Beggs View Post
    Jerry, I may be mistaken but I thought Tony Boyer shot a .268 neck. Oh well, Tony could shoot just as well with anything. He is a legend the likes of which we will never see again and he's still up there at the cutting edge. Incredible !

    As Wilbur said in his post number four of this thread, "I swear that I don't think it matters what the neck size is."

    Well said Wilbur, I agree.

    Gene Beggs
    I had read that several years back, Mr Boyer had started shooting a .268 neck.

    His book has been out quite a few years now. I'm sure he has changed a few things.

    Anybody know what Wayne Campbell uses? If I had the notion to immulate someone at this time, I think he would be my first choice.

  6. #21
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    Red face My Bad

    Quote Originally Posted by JerrySharrett View Post
    Gene, read Tonys book . He mentions. several times,he and Fays shoot a 0.263" neck.

    .

    Jerry, I'm sorry for my mistake. On page 158 of his book, Tony says, "I turn brass to .0092 for a .263 neck chamber."

    Maybe I better read Tony's book again; huh?

    Hope all is well. I appreciate your input. Have a good one today.

    Later,

    Gene Beggs

  7. #22
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    Anybody know what Wayne Campbell uses? If I had the notion to immulate someone at this time, I think he would be my first choice.

    Yes,wayne campbell uses a 268 neck. I asked him at the cactus.

  8. #23
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    Quote Originally Posted by gabe ledesma View Post
    Anybody know what Wayne Campbell uses? If I had the notion to immulate someone at this time, I think he would be my first choice.

    Yes,Wayne Campbell uses a 268 neck. I asked him at the cactus.

    Gabe, I'm sure glad you posted that. Maybe I'm not going crazy after all. Someone told me some time ago; maybe it was Mike Conry, I'm not sure, but I know for certain that Charles Huckeba and Mike Conry, both world champions, shoot a .268 neck because I had some custom carbide neck bushings ground especially for them. They discovered, as I did, that the thicker necks require far less sizing than the older thin wall necks.

    With my 6mm Beggs cartridge, I followed Jackie Schmidt's lead and went with the .269 neck and found, much to my chagrin, that the .002 to .003 'squeeze' I normally used with .0080 necks was way too tight! The best results were obtained with a carbide bushing .001 smaller than the loaded round diameter.

    So, what neck diameter is best for the 6mm BR cartridges? We've now used .261, .262, .263, .265, .268, .269, .270 and I even use .274 with my no-turn 6mm Beggs. I think Wilbur Harris, the chief cook and bottle washer here on BR Central was right when he said, "It doesn't matter what neck diameter is used!" And I agree with Wilbur. As long as the shooter understands how to deal with his chamber and neck diameter, it doesn't matter. As far as I know, Jackie Schmidt was the first to go with a .269 neck; he said his reason was to simplify neck turning. As far as I know, I'm the first to go with a .274 no-turn neck. My reason??? It eliminates neck turning all together!

    Later guys. Thanks again Gabe.

    Gene Beggs

  9. #24
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    GENE back in the mid 90s when i started in this world of benchrest my go to reamer was always a 263 neck. just recently i have switched to 268.my main reason for the neck change had more to do with the type of actions i am using now . Back when i used a 263 my actions wher all RBLP NO EJECTION, I single handedely removed my cases by hand. Now i am using RBLPRE. when i get a good condetion my brass will start flying and now i get the occasional brass that will make it to the floor. having a thicker neck is a + when turning brass and i have found that brass that hit the ground especially when they hit the neck area dont get bent as bad. I never seen any difference in accuracy between both neck thickness.
    Last edited by gabe ledesma; 11-09-2018 at 11:30 AM.

  10. #25
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    Opinion from 30 shooter

    I like a .267" neck. I have shot a PPC before, so I thought I would tell you why a .267" neck. For Lapua brass, while it is a little more turn than a .268" or .269", it is still not near as bad to neck turn as the .262" to .263". For the new Norma brass, you can shoot it as is for just a tad under .002" neck clearance, or just clean the Norma necks up for a tad over .002" neck clearance. This is why a .267" neck works best as a dual purpose diameter. Good for Lapua and Norma. It is also the only diameter I have seen overlooked by many, so again, I'm the odd one, but probably not for long now.

    Some shooters use a .268" neck for the Norma, but it gives you close to .003" neck clearance with no neck turn. If that's where you want it, then fine, but if it's not what you like, then your stuck with it.

    I base this on the last batch of Norma brass I purchased about 1 year ago. It measured .2652" with a seated bullet. Remember two things concerning neck diameter in the chamber. The reamer may cut around .0002" larger than it measures. Many reamer tolerances are minus .0000" and plus .0004". Many shooters will say they have .002" clearance if they have a .262" reamer, and measure a loaded round at .260". This is simply false, and they could be off over .0005".

    Michael
    Last edited by mturner; 11-08-2018 at 02:26 AM.

  11. #26
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    The story a long time ago was that you needed case necks that were turned carefully and the same thickness at any point measured....blah, blah, blah. Sounded good so it became the norm...everybody did it. Come to find out, the thickness of the case neck doesn't matter that much and I don't think consistency does either. What does matter is case life and the closer you get, the longer your cases will last...generally speaking.

  12. #27
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    My first 269 neck

    Quote Originally Posted by Wilbur View Post
    The story a long time ago was that you needed case necks that were turned carefully and the same thickness at any point measured....blah, blah, blah. Sounded good so it became the norm...everybody did it. Come to find out, the thickness of the case neck doesn't matter that much and I don't think consistency does either. What does matter is case life and the closer you get, the longer your cases will last...generally speaking.
    I followed the advice of a well known USA gunsmith (how also chambered my rifle ) and decided to use 269 neck in my new Bat Neuvo action, Im not disappointed. I was using 262 neck before The 269 has much stronger neck (as many have pointed out) and turning is much more easy. I have only fire formed the some 25 cased but I did shoot a test to find out the best seating dept and such Click image for larger version. 

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    The combined 36 shoots is around 0,216 agg
    This is of coures 3 shoot groubs

  13. #28
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    Tell us how your neck diameter is better

  14. #29
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    Thumbs up Thanks guys!

    Although I didn't originate this thread, I guess I've been guilty of hijacking it. It's been a most interesting conversation and I for one would like to say how much I appreciate everyone's contributions.

    Don't be afraid to experiment with new ideas. That keeps it interesting.

    Later,

    Gene Beggs

  15. #30
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    Feb 2018
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    Quote Originally Posted by Dusenberg View Post
    Tell us how your neck diameter is better
    I'm not saying the 269 or 268 are better necks, To many world record done with the 262 to say it is not good! They are more easy to turn and the necks are stronger. I you have a strong spring in the ejector the necks can also get a small dent in the neck when leaving the chamber. And depending on action type this small dent can be right in the area where the pressure ring on a flat base bullet will end up while loading the case again because we only size outside neck and do not expand the neck. So after my limited test with the new neck my best agg now for 5 groups in a row is 0,226 with one bullet making this agg go from 0,190 agg to 0,266 (This done at 100 meters with a 10,5 rifle ) I'm positive 269 neck will be my choice for 6 PPC neck in the future

    To sum it up

    269 neck
    Stronger
    Easy to turn
    Better neck tension (more material to play with)

    Joe

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