Question

[Vecco]

I have been reloading for about 3 years. I use a Dillon 650 and reload 9mm, 45acp and 223. I have never had any problems until recently with 9mm. I wanted to use up some Hodgdon Longshot powder that was left over from the great primer/powder shortage of 2009 before I was able to get the powder I wanted to use. I had used this powder before with no problems. Before I used 5.4 with a COL of 1.06, 115 FN and all was fine. The max COL for 9mm is 1.169( Hornday 7th Ed, pg 795). This time I used 5.7 (still not the max of 6.0 for longshot) with a COL of 1.11 and 115RN. About 1/3 of my load will not fit all the way into a setting depth gauge, they get tight right at the end. I have pulled some apart and they are not double loads and I do have a powder sensor on my Dillon that beeps if the powered is low or high for what you set it at. Again 2/3 are fine and 1/3 are not. I do use range brass but the mixed head stamps are on both the good and bad side of the loads. Any idea as to what is making this happen?

Load used.

9mm 5.7g Hodgdon LongShot, COL 1.11, 115RN
Dillon 650 progressive press
Mixed head stanps.


Hodgdon reloading data for 9mm/longshot from their websight.

115LRN, COL 1.10, Min G 5.0 Max G 6.0