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8milimeter View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8milimeter Quote  Post ReplyReply Direct Link To This Post Topic: Vertical Fliers
    Posted: March 12 2013 at 9:06pm
I am having flier issues with my No4 MkII.
150 hornady 22.5 4759 Wlrm (no crimp but heavy neck tension)
My fliers are always 2MOA high or low.
Could this be a bedding problem ?
If so what bedding area would correct this.

I can shoot 7 tens and 3 nines all day long.
The nines are killing me.
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muffett.2008 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote muffett.2008 Quote  Post ReplyReply Direct Link To This Post Posted: March 13 2013 at 4:25am
One of the biggest problems with the post/ring combination, is vertical dispersion.
 Controlling it is simply careful attention to sighting, trigger control and follow through.

 However, if the problem was more pronounced, more than one shot in the string, you would need to check that the barrel is not touching timber, then check the draws are tight and always check the mainscrew.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Canuck Quote  Post ReplyReply Direct Link To This Post Posted: March 15 2013 at 7:30am
It sure would be nice to have a mainscrew with a socket-head instead of a screwdriver slot. Methinks we could get those draws very tight. How many of us have scratched or gouged wood in the area of the mainscrew? Lots I bet, and a socket-head screw would be a big help with that.
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hoadie View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hoadie Quote  Post ReplyReply Direct Link To This Post Posted: March 15 2013 at 9:39am
...or a ROBERTSON screw!
Hoadie
Loose wimmen tightened here
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Canuck Quote  Post ReplyReply Direct Link To This Post Posted: March 15 2013 at 12:03pm
Yah, no kidding. The Robertson screw was a great improvement over the Phillips head screw.
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hoadie View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hoadie Quote  Post ReplyReply Direct Link To This Post Posted: March 15 2013 at 12:24pm
never been another invented better. Henry Ford said he'd make sure that screw was never sold in the states.He was sucessful for the longest time.But now-since NASA started to use it, they are becoming available stateside.
Just like the ARDOX nail...but thats another story for later.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Smokey Quote  Post ReplyReply Direct Link To This Post Posted: March 24 2013 at 6:11am
Something else that can cause vertical stringing is velocity variation. Temperature can effect pressure (and velocity) such as a warm to hot chamber/barrel from several shots fired in a short time. I do not have much experience with SR4759. IMR3031 seems to be extremely consistent where I've used it for moderate loads.
Arguing with someone who denounces reason is like administering medicine to a corpse.
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