Dead on at 100yds 4inches right at 400yds
- Thread starter buzzyb
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Too many possible factors, environmental, shooting fundamentals, trigger discipline, equipment set-up, etc.
you use a scope level?
Do you have an anti-cant (scope level) on the scope? What were the winds?
The right hand twist of the barrel will move bullets to the right a little.
Off axis may be another cause. The scope needs to be centered over the bore.
The internal adjustment of the scope should be centered before mounting. Use a adjustable windage mount to zero the rifle.
What i do- Sight in at 200 yds with bullet impact 1" left of center aiming point. At longer range of 400, should be close to center.
Off axis may be another cause. The scope needs to be centered over the bore.
The internal adjustment of the scope should be centered before mounting. Use a adjustable windage mount to zero the rifle.
What i do- Sight in at 200 yds with bullet impact 1" left of center aiming point. At longer range of 400, should be close to center.
Spin drift alone will take you about 5" at 1000 yards. Not much at 400
No idea. I am short benchrest to 300 yards & Groundhogs to 425 yards. After that its kentucky windage.
^^^^ THIS ^^^^
The bore need to be straight under the scope bell, before you adjust the scopes reticle to be vertical with a plum bob. If not, if zeroed at 100 yards the bullet will appear to drift left ot right from the 100 yard zero.
See the top part of the pic below.
The Oregonian
Well-Known Member
I have always gone by the rule of thumb that to account for spin drift zero should be 1/4" left of center at 100...
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