Hunting = cold bore shots

Discussion in 'Long Range Hunting & Shooting' started by Litehiker, May 29, 2018.

  1. Litehiker

    Litehiker Well-Known Member

    Messages:
    1,451
    Joined:
    Sep 15, 2012
    And cold bore shots usually shoot higher than fouled "warm" bore shots.

    But using bullets tumbles with HBM (Hexagonal Boron Nitride) tend to group cold bore shots with the following shots so you do not have to remember to aim first shots a bit lower when taking a long shot. Jus' saying'...

    Eric B.
     
  2. Reload10

    Reload10 Well-Known Member

    Messages:
    97
    Joined:
    Jan 31, 2016
    I take it you HBN coated some yourself and found that it reduced the cold bore spread?
     
  3. MagnumManiac

    MagnumManiac Well-Known Member

    Messages:
    1,355
    Joined:
    Feb 25, 2008
    I must be lucky, not one of my rifles ‘walk’ POI between cold bore and any follow up shots as the barrel heats. If they do, then they go down the road.
    Rifles that ‘string’ as the barrel warms are not precision devices and have not been bedded or stress relieved correctly. It is normally a mechanical problem that causes it.
    Soda straw barrels are often a problem with this, sometimes forend pressure will eliminate it somewhat.

    HBN is obviously changing barrel time if it has shrunk your groups as the barrel warms, but don’t bet it would have the same results with every bullet/powder combo in that rifle. Just saying.

    Cheers.
    :)
     
    Cinchy and Rick Richard like this.
  4. Shane Lindsey

    Shane Lindsey Well-Known Member

    Messages:
    506
    Joined:
    Jul 13, 2010
    I have seen different impacts with cold/clean barrels before. Dirty cold not so much.

    Two of my rifles shoot to within the group of each other. They are my go to for confidence.
     
  5. jcp1967

    jcp1967 Active Member

    Messages:
    40
    Joined:
    May 10, 2018
    Im with you MagnumManiac ...none of my guns walk either I shoot three shot strings starting with a cold bore and mine group with no cooldown time.
     
  6. Varmint Hunter

    Varmint Hunter Well-Known Member

    Messages:
    2,746
    Joined:
    Dec 26, 2001
    Cold , clean bores always seem to stray. However, most of my rifles will shoot within a small group, warm or cold, when there has been at least three fouling shots since the last bore cleaning.
    Exceptionally cold hunting conditions "may" change this but I don't hunt in those conditions.
     
  7. Wolf76

    Wolf76 Well-Known Member

    Messages:
    122
    Joined:
    Jan 5, 2014
    The exact reason I group on a dirty barrel. Never understood the clean barrel thing. Barrel is changing so much with each shot (when starting super clean barrel), especially a factory tube. None of my guns go in the field until they have min 15 rounds through them. First shot seems to hit it's mark, if I do my job.
     
    jasent and jcp1967 like this.
  8. Shane Lindsey

    Shane Lindsey Well-Known Member

    Messages:
    506
    Joined:
    Jul 13, 2010
    I experimented with this when I moved to VA. I fouled a rifle and then put it away. Maybe 10-15 shots through it. Went back a few months later and it was orange inside. Never again. Now I clean them and if the clean/cold bore isn't in the group. That gun don't hunt. I still will try to shoot a group beginning of hunting season, but no more than cold bore and a three shot group and won't let it sit for more than a week or two without cleaning out the powder fouling.
     
    Last edited: May 29, 2018
  9. Canhunter35

    Canhunter35 Well-Known Member

    Messages:
    1,434
    Joined:
    Jun 13, 2017
    What kind of rifle was this observation made with?
     
  10. HARPERC

    HARPERC Well-Known Member

    Messages:
    4,998
    Joined:
    Jan 28, 2011
    I have some that are great at repeating the first shot.

    i consider the HBN at times, secondary to good reports.

    My mind set is first shot is the group for a hunting rifle. It's the rest that are strays.
     
    Rich Coyle, Barrelnut and Canhunter35 like this.
  11. Canhunter35

    Canhunter35 Well-Known Member

    Messages:
    1,434
    Joined:
    Jun 13, 2017
    A lot of times I only shoot once or twice, at whatever range, if I hit, my dope is good.
     
  12. Rich Coyle

    Rich Coyle Well-Known Member

    Messages:
    2,903
    Joined:
    Aug 14, 2013
    You have me thinking. I always fire one and let it cool till it's below 80 degrees. Then the next. Next time at the range I will fire two and see what happens.
     
  13. Wedgy

    Wedgy Well-Known Member

    Messages:
    1,142
    Joined:
    Feb 9, 2013
    Record the velocities as you fire and see what the string shows.
     
  14. lancetkenyon

    lancetkenyon Well-Known Member

    Messages:
    1,028
    Joined:
    Jun 3, 2013
    Cold bore shot....
    [​IMG]

    3 round group immediately following on a different target...
    [​IMG]

    I can honestly and proudly say, with my ballistic app, I put my 1st round shot exactly where I wanted it to go on my elk last year at 662 yards. Within 1" at most with my 7RM as seen above.
     
    Canhunter35 likes this.