Thread: Frustrating arvo at the range. Powder charges.

Originally Posted by gqhoon

Essentially because 24gr is not a powder weight that gives a stable velocity node. Statistically, You could shoot it again tomorrow and get the original low SD’s, or it could be twice as bad. Doing the ladder test will help identify a stable velocity node.

The magnetospeed will definitely have an impact on the harmonics and therefore accuracy. So yes, you’ll need to run the seating depth test twice, first without the MS shooting for groups, then again with the MS to record velocities and SD’s.....or borrow a Labradar (a ball ache in itself to use at times).

Brilliant, thanks for that explanation. What are the common issues with the Labrador?