Results 1 to 10 of 10

Thread: Scoring question

  1. #1
    Join Date
    Aug 2011
    Posts
    46

    Scoring question

    If a bullet is “unstable “ and makes an oval hole,just touching the higher scoring ring how is it scored?
    I mean ~2 diameters wide.
    Last edited by txdan; 03-31-2020 at 09:26 AM.

  2. #2
    Join Date
    Feb 2019
    Posts
    412
    You get the higher score. The scorer can’t assume the center of the hole is where he or she places the scoring reticle.
    Last edited by FBecigneul; 03-31-2020 at 10:36 AM.

  3. #3
    Join Date
    Jul 2007
    Location
    S.E. MI
    Posts
    2,244
    Quote Originally Posted by FBecigneul View Post
    You get the higher score. The scorer can’t assume the center of the hole is where he or she places the scoring reticle.
    Also called best edge scoring. Some clubs use worst edge. 1 club I have been told. If the bullet hole is not perfectly centered over bullseye. No bullseye.
    That was a 22LR BR indoor league.....Local rules...

  4. #4
    Join Date
    Apr 2006
    Location
    Kentucky-Home of the Kentucky Wildcats
    Posts
    2,298
    Quote Originally Posted by txdan View Post
    If a bullet is “unstable “ and makes an oval hole,just touching the higher scoring ring how is it scored?
    I mean ~2 diameters wide.
    You designed it that way, right? Lol!

  5. #5
    Join Date
    Feb 2003
    Location
    Austin, Texas
    Posts
    901

    Higher score

    Quote Originally Posted by txdan View Post
    If a bullet is “unstable “ and makes an oval hole,just touching the higher scoring ring how is it scored?
    I mean ~2 diameters wide.
    When I was match director at my local match, there was one shooter whose bullets were unstable. So much so that quite often they went through the target sideways. I always gave him the higher score if it touched the next ring (a hit is a hit.)

  6. #6
    Join Date
    Jan 2009
    Location
    DFW Texas
    Posts
    425
    Quote Originally Posted by mwezell View Post
    You designed it that way, right? Lol!
    hmmm.... 30br 1:18 shooting 220 SMK..... Let's go shootin'

  7. #7
    Join Date
    Jun 2010
    Location
    USA
    Posts
    605
    Quote Originally Posted by P1ZombieKiller View Post
    hmmm.... 30br 1:18 shooting 220 SMK..... Let's go shootin'
    Empirical Sg testing, with our first PacNor 1:18" twist barrels, ordered from Chris Dichter, following my first reading of MODERN EXTERIOR BALLISTICS, by Robert McCoy, confirmed that, yes, one can set-up for [technically] stable, yet obviously wide and uniform yaw/pitch!

    Make some 125 - or, thereabouts - 30 Cal. bullets, using the 1.150" long jacket, and run them through a 1:18" twist barrel - you'll consistently get 'key-holes' about two bullets long, but sadly, @ 100 yd., about 2.5"-3.5" groups.
    You will get a "poor man's chronograph" - if your velocities, thus RPM, are good, all of the "points" will be oriented (O'clocked) very consistently . . . if only I could got them to group! RG

  8. #8
    Join Date
    Feb 2003
    Location
    Houston, Texas
    Posts
    7,748
    A little off topic, but on the same subject......

    A few weekends ago we were at Tomball just shooting. I pulled it m HV 6PPC, 13.5 Krieger. I got it shooting quite well, and on a whim, decided to see how the Bart’s 80 grn BT wild do in that twist. I was expecting keyholes.

    I loaded i with 4895, with this .055 throat PPC, it seemed I cold not really get the tune I wanted.

    So I decided to just try 133. I did a little calculating and figure if I was shooting 30.2 behind a 68, around 27.0 would be about right with the 80. I already knew what seating depth this bullet likes from previous experience.

    The 27 had a about .280 vertices, no pressure signs. So I upped it to 27.5. Bingo. The thing shot just as good as the 68 grn. I shot several nice “ones”.

    I can’t believe that 13.5 twist stabilized that 80 grn Bart’s, and how well it shot. I previously shot it in a 1-12 with a .150 throat.

    I have no idea what the velocity is, I suspect around 3150.

  9. #9
    Join Date
    Jul 2007
    Location
    S.E. MI
    Posts
    2,244
    Here's the backer from last year. 7 ogive BT 68gn. Shot Great on Friday. 29.2 N133.
    Hart barrel and 40°. He got key holes. Trying to shoot group.
    Larry Feusse, the NICE Guy that he is, had some 52gn FB. I think, maybe the shooter will chime in.

    waiting on Verizon to download...

  10. #10
    Join Date
    Nov 2019
    Posts
    11
    Quote Originally Posted by zippy06 View Post
    Here's the backer from last year. 7 ogive BT 68gn. Shot Great on Friday. 29.2 N133.
    Hart barrel and 40°. He got key holes. Trying to shoot group.
    Larry Feusse, the NICE Guy that he is, had some 52gn FB. I think, maybe the shooter will chime in.

    waiting on Verizon to download...
    you got it correct. Temperature change was too drastic overnight that button barrel did not stay anywhere close to tune. Thanks to Larry I was able to finish the weekend. Sorry about the backers Dana.

Posting Permissions

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