Need some insight

Discussion in 'General Rifle Discussion' started by CourtJester, Aug 1, 2010.

  1. CourtJester

    CourtJester Well-Known Member

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    I picked up a Browning A Bolt .223 last week. I put a 3x12 scope on it as soon as I got home and took it to the range yesterday.

    50 yards= one holer
    100 yards= not quite a one holer but if I settle in and relax, it's a hole toucher
    200 yards= it's all over the damn place and 2 to 3 inches to the left of right of the bulls-eye.

    All of the bolts are tight, the scope is in full contact around the rings, and I get the same results from all of the amo. 55 gr Hornady, 55 gr Ultramax soft tip, and 52 gr Ultramax hollow point.

    I shot 170 rounds yesterday and tried everything (disassembled, cleaned, removed the scope and cleaning the rings, re-tightened everything) with no improvement.

    Any ideas of why it would take a **** between 100 and 200 yards?
     
  2. skullcrusher

    skullcrusher New Member

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    There are several factors. How was the wind? Did you allow the barrel to cool at all? Were you rapid firing? What kind of rest were you using? Were you magnifying the scope? Many questions and more info needed.
     

  3. canebrake

    canebrake New Member

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    Whistle pig ninja?
     

    Attached Files:

  4. Josey Wales '94

    Josey Wales '94 New Member

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    Yep, thinkin skull is right. That rapid firing in the bolt actions hurt me. Though when I went out day before yesterday my dads .300 WM was actin funny. Its got a Nikon 4.5-14 on it and its a Model 70 Win. Whenever he would adjust the (1/4 in clicks at a hundred yards) reticle at 200 yards one click would move the POI 4 or 5 inches. We would shoot the .30-06 I'm usin and an AR while we let barrel cool between shot sequences which were 3 shots.
    Ideas?
     
  5. cpttango30

    cpttango30 New Member

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    First what kind of scope are you using on the A-Bolt?

    Second what kind of rest are you using?

    Third what kind of platform are you shooting from?

    What kind of mount and ring set up are you using?

    The ammo may be 1/2 your problem. What is the twist of your rifle? Need more infor to help you out.
     
  6. joshfireart

    joshfireart New Member

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    i read post like this one and my first thought is to light of bullet for the caliber. and then the hot barrel then the wind.
     
  7. CourtJester

    CourtJester Well-Known Member

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    How was the wind? Nearly nonexistent which is odd for Iowa

    Did you allow the barrel to cool at all? Not really. It's was in the high 80's and I was in the sun. I didn't really sit and let it cool outside of leaving the bolt open every 3 or 4 shots while I went for a walk to check the patterns. I need a spotting scope.

    Were you rapid firing? No. usually about 30ish seconds between shots.

    What kind of rest were you using? Small throw pillows from the couch. They were ugly as **** so I stole them from the living room so my wife would have to replace them with something a little less ugly.

    Were you magnifying the scope? All the way. Does that matter???

    I'm new at this high power rifle thing so I have a slew to learn. I quit hunting and shooting (outside of trap) after I started road racing but still bought a lot of guns when the price was right and tinkered a little at the rang but only with .22's getting my kids started in shooting (my 10 year old got the sharp shooter award in Sea Cadet bootcamp a few weeks ago. WWWOOOOHHHHOOOOOO!!!!!)
    I traded some motorcycle suspension parts for a .308 Weatherby over the winter and fell in love with the long range effort. I just have a **** ton to learn.
     
  8. CourtJester

    CourtJester Well-Known Member

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    How was the wind? Nearly nonexistent which is odd for Iowa

    Did you allow the barrel to cool at all? Not really. It's was in the high 80's and I was in the sun. I didn't really sit and let it cool outside of leaving the bolt open every 3 or 4 shots while I went for a walk to check the patterns. I need a spotting scope.

    Were you rapid firing? No. usually about 30ish seconds between shots.

    What kind of rest were you using? Small throw pillows from the couch. They were ugly as **** so I stole them from the living room so my wife would have to replace them with something a little less ugly.

    Were you magnifying the scope? All the way. Does that matter???

    I'm new at this high power rifle thing so I have a slew to learn. I quit hunting and shooting (outside of trap) after I started road racing but still bought a lot of guns when the price was right and tinkered a little at the rang but only with .22's getting my kids started in shooting (my 10 year old got the sharp shooter award in Sea Cadet bootcamp a few weeks ago. WWWOOOOHHHHOOOOOO!!!!!)
    I traded some motorcycle suspension parts for a .308 Weatherby over the winter and fell in love with the long range effort. I just have a **** ton to learn.
     
  9. Txhillbilly

    Txhillbilly Active Member

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    Did you change the magnification of the scope at the different ranges you were shooting? If so,point of impact can change.

    Also,Does that rifle have a sporter barrel (thin)? If so,the harmonics of the barrel can affect the groups at farther ranges. Try shooting a heavier bullet out of the gun and see if it helps your groups at longer ranges.

    A good note to go by when shooting a rifle is if the barrel gets hot enough that you can't keep your hand/fingers on it. Let it cool off! A hot barrel will give you very sporadic groups.
     
    Last edited: Aug 1, 2010
  10. CourtJester

    CourtJester Well-Known Member

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    Did you change the magnification of the scope at the different ranges you were shooting I kept it turned up high. No changes


    Also,Does that rifle have a sporter barrel (thin)?
    Yes

    A good note to go by when shooting a rifle is if the barrel gets hot enough that you can't keep your hand/fingers on it. Let it cool off! A hot barrel will give you very sporadic groups How do you keep a thin barrel cool when shooting in the dead of summer in the sun???
     
  11. opaww

    opaww New Member

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  12. cpttango30

    cpttango30 New Member

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  13. skullcrusher

    skullcrusher New Member

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    Tons of good info here, just another reason why I love this site.

    Sand bags are good to use as rests. I made my own out of legs cut off of old jeans. Sewed one end, filled with sand and closed off the top with zip ties.

    As far as letting the barrel cool, like Txhillbilly said, you should be able to hold onto the barrel without it being too hot before shooting. 80° and sunny should take a long time to heat up the whole barrel, so don't worry about that. We are talking about heat from shooting.

    Something I learned here is the dollar bill test. Take a bill and run it under the barrel toward the action and see how far it makes it before it catches. That A-bolt should be floated (I believe) already so the bill should come close to the front of the chamber area.

    If you tell Tango your twist rate, he can tell you the weight of bullet that would work best.
     
  14. CourtJester

    CourtJester Well-Known Member

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    Thanks for the info. As I'm getting into the high power rifles it's looking like I should invest in a good set of those you posted.
    I have a Marine Corps swivel stand but it's not even a little bit stable. I just use it to hold the gun so I don't have to lay or lean it on the wood bench when I walk down field.
    I will say that the good firm pillows work really well with 22's out to 100 yards. It was work a shot.
    What about a tripod? More for hunting I would assume?
     
  15. JonathanGlass

    JonathanGlass New Member

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    how does the magnification of the scope affect where it will shoot? So if I were to sight in my .243 at 6 power at 100 yards, and I went to shoot at something on 9 power at 100 yds, my bullet will hit elsewhere?
     
  16. Jo da Plumbr

    Jo da Plumbr New Member

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  17. JonathanGlass

    JonathanGlass New Member

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    honestly, I think that's a bunch of bull, the magnification zooms in but keeps the crosshairs in the same place, and the crosshairs get bigger when you zoom out....
     
  18. CourtJester

    CourtJester Well-Known Member

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    Dunno...
    I have some big scopes on the .22's that I keep zoomed all the way in. I'll try it on a few of those at 100yds zoomed all the way in and then all the way out and post target pictures of what I get from it.
     
  19. opaww

    opaww New Member

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    You might think it is a bunch of bull but the FFP and SFP if fact do a little research on the subject before making a bull comment
     
  20. joshfireart

    joshfireart New Member

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    i knew this but had forgotten through the years. on my 3X9s i site in on 9 and on my 6x24 i site on 16 power. Im wondering just how much dose change the point of impact the group should stay the same as long as its fired on the same setting.