Re-did the load ladders. Used Lee scale to dial in 10 drop AVG's on progressive. Used certified weights to check 1 gram... smallest I have....

• Used a Lee

**balance beam** scale ? Balance beam scales differ in that if they are "off", then they vary by a

constant percentage. That is to say, if they are "off" by +1/2% at 3gr, then they are off by the same +1/2% at 200gr. In my cartoon of scale accuracy, that is represented by the

green line. So "constant percentage" of variation plots as a

**straight line**. That's "

*constant*", as in "

*forever*". And that's

*forever* as in Mt. Mckinley not moving to GA, God's promises, or the sun coming up in the morning.... however you want to envision it. The only sources of variation in the balance beam are the friction at the point of teeter-totter, the accuracy of the notch spacing on the beam, and the variation of Gravity.

• 1 gram = 15.4 grains, which is not close enough to your 4 to 5 grain measurement arena to use on a

digital scale. If you wanted that, then RCBS and others make check weights in that range. Search

MidwayUSA for said check weights.

3.9 = AVG 993.6 SD 13.39 ES 44

4.0 = AVG 1036 SD 11.4 ES 36

4.1 = AVG 1050 SD 12.48 ES 38

4.2 = AVG 1069 SD 5.74 ES 19

These numbers look excellent. Good work.

PS quick load says I could get to 4.3, "warning near Max" think its worth it...that 4.2 was pretty tight group of rest...

**Quick Loads** is software that is making

*estimates*,

**not ***measurements*. Don't confuse the two ! Yes, you are near Max Load, but the proof is in the actual velocity measurement given by the chrono.

What saves you with 9mm is that, unlike some calibers, there is 9mm+P which works at higher pressures and higher velocities. So it's OK for your

testing in a modern 9mm pistol to creep past

Max Load velocities, just don't make a habit of it. You do that by watching your

*velocities*,

which is the entire reason to own a chrono. Hope that make sense.

►

Everything we do in reloading is to keep the chamber pressures under control. Think about it... we use accurate scales and accurate powder measures. We seat the bullets with accurate seating dies. Then we measure the velocities with an accurate chrono. It's all so the results are highly repeatable. Which is another way of saying "safe to shoot".