Ballistics Calculator adjustments

[bellerophon51]

hi guys just after some advice from those who are clued up on ballistic calc scopes. I'm running a pard NightStalker 4k on the 22lr, i find it runs high at 100m. dead on at 50m. do you tend to adjust the bullet bc or the velocity to adjust the impact point, ive not played with any values as of yet.

 

[Jagged77]

Adjust velocity to match. Get all your base data right but at those distances it won’t affect things much.

 

[bellerophon51]

I've had it through the chrono and done it all as correctly as possible but the further it gets pushed it's always high. I end up aiming Low on the bc impact point to kill.

 

[mealiejimmy]

For typical 22 ranges, changing velocity has much more effect on the POI than changing BC
If the ballistic calculator is giving you an aiming point that results in the POI being high, then increase the velocity- because that will produce a holdover mark nearer the centre of the reticle so the rifle isn't pointed so high to get the holdover mark on the target

Cheers

Bruce

 

[bellerophon51]

For typical 22 ranges, changing velocity has much more effect on the POI than changing BC
If the ballistic calculator is giving you an aiming point that results in the POI being high, then increase the velocity- because that will produce a holdover mark nearer the centre of the reticle so the rifle isn't pointed so high to get the holdover mark on the target

Cheers

Bruce

Cheers Bruce much appreciated. I don't really push it far but it is satisfying to get a smart kill at range with ease on the .22, a friend has the aplex lrf on the 22-250 and that thing will hit and kill as far as the lrf let's it. Unreal!

 

[MarinePMI]

As I understand it, a lot of ballistic calculators do not calculate .22LR bullets correctly. Perhaps that has changed recently (due to .22 PRS popularity), but for awhile Applied Ballistics was the only calculator that had fairly correct drop calculations.

IIRC, it had to do with the heeled bullet and how it exits the barrel...