PURPOSE: Duplicate a factory load velocity for the Hornady 147g ELD Match Bullet with tighter SD/ES. Per magnetospeed it was traveling at only 2600, SD 16, ES 35.
View attachment 7046396
Brass: Prime 6.5 Creedmoor
Primer: Federal GM210M (Large Rifle Match)
Bullet: Hornady 147g ELD Match
COAL: 2.825 (.025" off the lands)
Neck Tension: .003"
Dies: Lee Precision FL sizing die, Collet Neck sizing die, Dead Length seating die.
Process: deprime (Lee Classic Turret Press), tumble, clean, full length size (Lee Classic Turret Press), trim, anneal (salt bath), avoid burning fingers, drop in water, tumble dry, clean, neck size, final prep (chamfer, etc), prime on press (Lee Classic Cast Press), charge with powder, seat bullet (Lee Classic Cast Press)
Rifle: Ruger Precision Rifle
Barrel: Proof Research stainless, M24 Profile, 24", 1:8 twist. Headspace set to SAAMI Minimum +.003" per Proof Research recommendation.
Brake: APA Little Bastard - Jam nut style.
Location: Burro Canyon, Azusa, CA (1 hour drive from my residence thanks to traffic on the westbound 210 freeway!)
Position: Bench with bipod and rear bag.
Time: 1404 hours (2:04 PM)
Conditions via Kestrel: Temp: 65f, Baro: 27.94 inHg, Humidity: 23%, Density Altitude: 2750
WIND: from 10-11 o'clock, 1/2-3/4 value, variable 5-15 MPH (enough to make my target flop around a bit, made it spicy!)
Distance: 101.3 yards via laser rangefinder.
Chronograph: Magnetospeed Sporter
Load #1:
Powder:
Reloder 17: 40.5 grains
Velocity: 2682
SD: 3
ES: 6
Group size: .292" Center to center:
View attachment 7046392
Load #2:
Powder H4350 41.4 grains
Velocity: 2701
SD: 5
ES: 13
5 shots
Forgot picture, sorry. It was similar sized hole, no larger than .4" Center to center probably thanks to the wind moving my target around. ???
Outcome: SUCCESS!! ? This is the best load development result series I have ever done since I started reloading about a decade ago!! I am so relieved I can now just load a bunch of either one of these loads and let it rip!