by straightshooter » 12 Feb 2018, 7:45 am
Agonising over powder thrower precision is mostly a waste of time, particularly if all your shooting is at short to medium ranges.
The effect of slight variations in powder weight is generally overwhelmed by other variations in your loaded rounds. (You would need at least some appreciation of statistical analysis to grasp the significance of why so.)
Nonetheless if you want to minimize the effect of powder thrower variation at minimum cost try this simple method, you will however need digital scales with a tare function.
First decide what level of weight consistency is acceptable, let's say for example target weight plus/minus 0.1 grains.
1. Place your primed empty case on the scale and press zero.
2. Drop your powder into the case.
3. Place the charged case back on the scale and check the weight.
4. If the indicated charge weight is in the acceptable range then load the projectile.
5. If the indicated charge weight is outside the acceptable range then empty the powder into the hopper and go back to step 2.
This method is very straightforward and quick and automatically compensates for drift in the scale electronics and allows you to make slight tweaks in the volume setting of your thrower as the level of powder in the hopper changes.
"Anything is possible if you don't know what you are talking about."
"There is no expedient to which a man will not resort to avoid the real labor of thinking." Sir Joshua Reynolds