Just started using my 550

[k_day64]

I just started using my 550 and I am concerned about the powder thrower. I am loading 140grn Hornandy Cowboys using N320 Powder in 3.8 SPL. My loading tables tell me not to exceed 4.6grn with a low of 3.4grn. My target is 3.55grn.

I am going very slow and methodical and my powder thrower is throwing 3.4 to 3.7 grn. Is this typical? Is this going to affect my shooting?

~k_day64

[h2osport]

With the powder drop, you should be able to get 0.1 gr accurate on that load. You have to be consistent on the stroke of the press, and make sure your fail safe rod is in place to return the powder bar all the way. After adjusting, I take about 5 drops and dump them back into the powder hopper then measure a few and see what you get.

Randy

[Storm52]

With the powder drop, you should be able to get 0.1 gr accurate on that load. You have to be consistent on the stroke of the press, and make sure your fail safe rod is in place to return the powder bar all the way. After adjusting, I take about 5 drops and dump them back into the powder hopper then measure a few and see what you get.

Randy

+1 but I bump up the initial drops to 10-15 then dump back into measure, make adjustments and throw 10 measuring them together. Adjust accordingly take another 10 to the measure. If I can toss 10 rounds within ±.1 gr the target, I lock and load.