curiousaussie
Active Member
- Joined
- Dec 22, 2008
- Messages
- 27
G'day,
Have been having trouble for weeks and weeks matching my 600m (660yards), 900m (1000yards), and 1000m (1100yards) bullet drops with the ballistics programs.
The load is 60.5gn 2213SC pushing a 180gn Berger at 2820fps.
When dialled in at 600m my shots at 1000m would be 4-5 clicks flatter than what any program said. Vice versa when dialled in at 1000m it would be out by 4-5 clicks at 600m.
Was tearing my hair out trying to manipulate velocity an/or BC to get it to fit. No luck.
This weekend just gone shot a five shot group at 1000m measuring 10.5 inches wide by 4.5 inches height. Was wrapped with the rifle but still didn't match up at 600m.
Then I tried something different. I changed the clicks on the program from 0.1 mRad (scope a Nightforce 5.5-22x56 MLR metric) to 0.104mRad and suddenly 600m, 900m, and 1000m results matched the bullet's path.
Has anyone had any experience with some scopes being not quite true to their click values?
Or has anyone used the method of changing the click value in Exbal, JBM, or BulletFlight to make the trajectory fit the scope?
Any advice would be greatly appreciated.
Cheers,
Matt
Have been having trouble for weeks and weeks matching my 600m (660yards), 900m (1000yards), and 1000m (1100yards) bullet drops with the ballistics programs.
The load is 60.5gn 2213SC pushing a 180gn Berger at 2820fps.
When dialled in at 600m my shots at 1000m would be 4-5 clicks flatter than what any program said. Vice versa when dialled in at 1000m it would be out by 4-5 clicks at 600m.
Was tearing my hair out trying to manipulate velocity an/or BC to get it to fit. No luck.
This weekend just gone shot a five shot group at 1000m measuring 10.5 inches wide by 4.5 inches height. Was wrapped with the rifle but still didn't match up at 600m.
Then I tried something different. I changed the clicks on the program from 0.1 mRad (scope a Nightforce 5.5-22x56 MLR metric) to 0.104mRad and suddenly 600m, 900m, and 1000m results matched the bullet's path.
Has anyone had any experience with some scopes being not quite true to their click values?
Or has anyone used the method of changing the click value in Exbal, JBM, or BulletFlight to make the trajectory fit the scope?
Any advice would be greatly appreciated.
Cheers,
Matt