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My pet load:
Bullet: RMR 69 Grain
Powder: Varget
Primer: Win SRP
Case: Federal
COAL: 2.25\”
Crimp: Yes FCD
Shots Fired: 5
Extreme Spread: 19 FT/S
Standard Deviation: 8 FT/S
AVG Velocity: 2753 FT/STest Gun: White Oak Armarment SPR (20\” 223 Wylde AR that\’s ran Suppressed with Deadair Nomad)
Groups vary day to day but it\’s usually around 1/2\” or less. The data from above on that specific day produced 3/8\” group. That\’s 5 shots at 100 yards with said gun.
Feel free to replicate at your own risk.
I haven\’t received my RMR 69gr bullets yet, but that virtually identical load and setup using the Sierra 69gr BTHP Match, and around 25.2gr of Varget gets a touch more velocity out of my Rock River Arms Varmint Special with 20\” Wylde chambered stainless heavy bull barrel, with no muzzle brake on it. Groups probably average around 3/8\”, but I get 1/4\” and less often enough that it stays quite interesting. If I could dope the wind better, my average group size would be less. Using the Lee FCD makes a noticeable difference in the ES & SD. Can\’t wait to try the RMR 69gr HPBT.
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