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  #121  
Old 12-24-2016, 08:15 PM
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Quote:
Originally Posted by earnest View Post
sometimes all it takes is 1 round, this is several lots look how lot 3016 is hanging out there. someone said just adjust your scope! WRONG this lot is a problem for a rifle with a tuner.
Marty,
I agree, horizontal is something to be concerned about. you have way more experience in this than I do, this why I would need to shoot another group to confirm something like this.

Lee
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  #122  
Old 12-26-2016, 11:03 AM
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I'm fairly certain the tuner on the left is borderline too heavy to allow consistent positive compensation shot after shot. I'm 100 percent sure a regular Harrell tuner is too heavy.
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  #123  
Old 12-26-2016, 11:07 AM
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I believe its impossible for a .900 or .875 profile barrel to consistently achieve positive compensation with a tuner set above 125 or weighing more than this tuner.
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  #124  
Old 12-26-2016, 11:37 AM
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Quote:
Originally Posted by earnest View Post
sometimes all it takes is 1 round, this is several lots look how lot 3016 is hanging out there. someone said just adjust your scope! WRONG this lot is a problem for a rifle with a tuner.
Lee it is impossible for higher frequency vibs to move the muzzle this far. this is caused by "forced deformation", where the barrel is pulled to a new shape. marty
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  #125  
Old 12-26-2016, 02:34 PM
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Quote:
Originally Posted by earnest View Post
Lee it is impossible for higher frequency vibs to move the muzzle this far. this is caused by "forced deformation", where the barrel is pulled to a new shape. marty
Ok, what may have caused this? too much weight?
from my own experience I start to see horizontal when I go pass a certain weight, with a know good lot.
is it that certain lots will not shoot well after you reach a weight limit? by using the least amount of weight do you minimize the chance of forced deformation.

I think you said that shot went out because that lot will not shoot with that tune

Lee
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  #126  
Old 12-26-2016, 05:34 PM
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Quote:
Originally Posted by earnest View Post
I believe its impossible for a .900 or .875 profile barrel to consistently achieve positive compensation with a tuner set above 125 or weighing more than this tuner.
this tuner is on the Suhl, look at the next pic this is what happens when a tuner is too heavy its impossible to tune positive compensation with all lots.
marty
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  #127  
Old 12-26-2016, 05:36 PM
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if I had shot a dozen more rounds these groups would have filled in, 40x is tuned to positive compensation the Suhl is not.
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  #128  
Old 12-26-2016, 05:39 PM
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this is lot 3016 shot with iron sights, shoots a great target without a tuner.
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  #129  
Old 12-26-2016, 08:08 PM
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Quote:
Originally Posted by earnest View Post
if I had shot a dozen more rounds these groups would have filled in, 40x is tuned to positive compensation the Suhl is not.
Marty,

If you could please, give your evaluation on this target. IMO this rifle is shooting really good, however I do believe there are other things I could try to make it shoot even better. the target was shot to test the tune prior to going to Lapua
lots 8731 & 2473 were tested in this rifle lots 3935 & 5586 were tested in another rifle the Midas+ was just a random lot of a brick.


Thanks,
Lee
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  #130  
Old 12-28-2016, 11:23 AM
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ill be surprised if #6 isn't a good lot, its all about location,location,location right now, next week well see how accurate it is..marty
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  #131  
Old 12-28-2016, 11:27 AM
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where its marked "control" is a known good lot of center x, then moved scope several clicks to left...
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  #132  
Old 12-30-2016, 12:16 PM
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most of these lots are faster than I'm shooting, this is #1 probably a 250-13-16x lot.
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  #133  
Old 12-30-2016, 12:19 PM
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#5 again way faster than my control lots, 10-12-14 are the weights gram wise added.maybe a 12x lot
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  #134  
Old 12-30-2016, 12:21 PM
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#8 midas again way faster than my control lot and maybe a 12x lot. my bet for all 3 tuner needs moved inwards.
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  #135  
Old 12-31-2016, 11:12 AM
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Usually 3 different weights consisting of 10.0--12.7--14.05 grams gives me a range from shortest barrel time or tuner only thru very slow ammo using 14 gram bloop. Obvious that most of those lots are higher velocity ammo...
1. Higher frequency vibs.
2. Barrel time " mostly determined by temp and humidity
3. Forced deformation. " barrel is pulled to a different shape" pressure
4.1 thing that should play no role in accuracy or precision is vibration from the lead round itself, however once 6.0 plus ounces are on the muzzle and the more a barrel droops this plays a role....marty
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