I have a STI Trubore in 38 SC and am planning on loading Montana Gold 115 JHP and 124 JHP for major open. I am planning on using WSR # 6-1/2 primers and reloading on my dillon square deal B with Starline Brass. I am worried about case capacity. I do not have any experience reloading for a comp ( I have lots of long range precision rifle reloading experience and regular pistol reloading experience) and from what I read, the larger capacity and slower powder is safer and will help the comp work better. What I am wondering is if the capacity will be so much that it will spill when the cartridge advances in the dillon to the next stage. Also, I was wondering if there might be a better powder choice. I am new to 38 Super Comp and open so I am open to any suggestions
