300 BLK – 10.5 in – HRN 190gr SUB-X – Accurate LT-30

Objective:

I am developing this load to be shot out of an SBR with a suppressor. This will mainly be used to hunt hogs at night at distances less than 100 yards. The goal is to find a powder that produces reasonable accuracy (~ 1 MOA) and consistent velocities around 1,050 fps.

Conditions:
  • Date: 10/8/22
  • Temperature: 60F
Firearm:
  • Barrel: Roscoe Bloodline 10.5” 1:7 Twist
  • Upper: PSA
  • Lower: PSA
  • Lower Parts: PSA
  • Trigger: Larue MBT2
Components:
  • Bullet: Hornady 190 gr SUB-X – G1 B.C.: 0.437
  • Powder: Accurate LT-30
  • Primer: CCI #41
  • Brass: Lake City
  • Dies: Hornady 2-die set
  • Chronograph: Caldwell Ballistic Precision
Measurements:
  • Case Trim Length: 1.358
  • C.O.L.: 2.050
Load / Model Data:
  • Charge Data
  • Expected Ballistics Table
  • Expected Bullet Drop
Results:
  • 11.5 Grains (This is the load I would use)
  • 12.0 Grains
Summary:

With 11.5gr of Accurate LT-30 the velocities were right in line with the goal. The accuracy and consistency are also what I’m looking for. As a bonus, this load locked my bolt back on the last round. Accurate 2200 is also a viable load, but this is the load that I am going with for now.