06/08/19 – Below are my results:
Rifle: AR-15 with a 16” FN barrel, 1/7 twist and a YHM Phantom QD suppressor.
Powder: Accurate 2520
Bullets: Hornady 75 gr BTHP (P/N 2279)
Primers: WSR
COL & Crimp: 2.250” with light taper crimp
Cases: Mixed FC brass trimmed to 1.750”
Conditions: 72 deg F, overcast, humid
Load Data*
Accurate: Start 22.2 gr (2610 fps) and Max 24.7 gr (2863 fps) – 24″, 1/12, WSR
Hornady (9th Ed.) – Service Rifle Data: Start 18.6 gr (2200 fps) – Max 22.5 gr (2600 fps) – 20”, 1/9, WSR
Note * – Always verify load data for yourself, starting low and working up in safe increments. Published data varies from source-to-source, and subject to typos and transposing errors. Additionally, internet posts such as this are someone’s personal experience.
Here were my results, 5 shots each at 50 yds:
23.2 gr – Avg 2499, ES 52, SD 19, 0.635”
23.5 gr – Avg 2534, ES 48, SD 19, 0.980”
23.8 gr – Avg 2569, ES 34, SD 15, 1.500”
24.1 gr – Avg 2601, ES 91, SD 33, 1.200”
24.4 gr – Avg 2642, ES 32, SD 12, 0.600”
24.6 gr – Avg 2526, ES 334, SD 130, 1.600” (WTH – something not correct here)
24.8 gr – Avg 2685, ES 21, SD 8, 1.970”
A few observations:
- My best load (IMO) was 24.4 gr which produced a five shot group of 5/8” at 50 yds with an average speed of 2642.
- Ball powder meters very well. And burns clean, even shooting suppressed
- I had similar results using Ramshot TAC – 24.1 gr – Avg 2643, ES 68, SD 22, Group 5/8” to 1”
DISCLAIMER
The load data contained above was developed using specific components. Other components may not produce equivalent pressure or velocities; therefore, it is recommended that the user be familiar with the basic rules of reloading safety. If you choose to use any load data above, you are using at your own risk.
Always verify load data for yourself, starting low and working up in safe increments. Published data varies from source-to-source, and subject to typos and transposing errors. Additionally, internet posts such as this are someone’s personal experience. My recommendation is that you should always consult at least three sources of manufacturer’s ammunition and/or powder reloading data before reloading your own ammunition.