I am having trouble finding load data for reloading my 9mm. This will be my first loads with it, otherwise have only done .40 and 5.56 reloading. I have searched the webs and find pretty big variances in data. I will be using a SNS 125gr RN coated bullet with Unique powder. According to my Hornady manual, it says to use 4.5gr to get 1000fps and a OAL of 1.090. Tried that, and that will not work. With this particular bullet it goes past the "seat" portion of the bullet [From R - L, bullet, seated at 1.090, factory bullet. (please refer to pic)]. I think that 1.115-1.125 would be right in the right range of the OAL.
From my searches from other boards and other manuals, it seems the loads vary from 4.0 - 6.0 gn. One manual says starting load to be 4.0 and other other says 5.2 which is a pretty big difference. Wanting to see what others are using and have had success with?
but still not definitive data with his findings. According to his he had cycling issues with 4.5gn. I may also switch to Powerpistol as the load variance is driving me up a wall with Unique. I am getting one drop with 4.4 and the next 5.2gn. I no longer have my .40 so I would like to use the rest up before I move on, but there is no definite decision. Having trouble finding load data for that as well.
Btw, I will be using CCI 550 magnum primers as I made the classic mistake instead of getting 550. After a long search, many have reported no change in pressures and chrono. It seems that Unique has no care and does not respond any different. I will be using a starting load so I am not too worried.
Since I have not yet started, I can also use the Powerpistol. Someone mentioned that Unique is a little too slow for 9mm.
