300 PRC

Sig Marine

Sergeant - USMC 1968-1970
Full Member
Minuteman
Dec 29, 2013
678
534
So Cal
How about the usual reloading data for the 300 PRC;

Brass manufacture
Charge weight and powder
Bullet make, weight and style (VLD, Hybrid, etc.)
Distance to lands
Overall length
Barrel length and twist
Muzzle velocity
any other data you feel is pertinent
 
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I just shot through my first 50 ADG cases on my 300 PRC. I ran a ladder to try and match my velocities with fire-formed RWS 8x68S brass. I am going to be trying:

28" barrel @ 1-9
ADG Brass
73.4 gr RL 26
Berger 230s
BR-2 primers
.030 off
Expecting to average just under 2850 fps - that's where the two ladder rounds at this charge weight landed.
 
These are the best results I've gotten so far ... looking forward to trying ADG brass
Hornady Brass
75.7 gr RL26
CCI 250 primer; Hornady 225 gr ELD Match
0.015 off the lands; 1:9 twist, 27 inch barrel
avg 2977 fps with an SD of 2.4
 
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Just finished load development on another 300 PRC hunting rifle...9 lbs with scope
Specs
Bighorn SR3
24” Bartlein #4 carbon barrel
1:10 twist
Barrel work by Beanland
Beast 4 port ti brake, very effective

ADG brass
CCI250 primers
75.6 RL26 powder
215 hybrids at .030, 3.705 OAL +/-
2885 FPS...24” barrel
There is plenty of room for more speed but this gives me adequate velocity at 1,200 yards to open the bullet and it’s not too fast at short range. Should be perfect for my hunting scenario.
 
Forgot to mention, I’ve tested several pieces of Hornady and ADG brass for internal volume with water
ADG...95.5
Hornady 95.7

In theory the same load should work in either.
 
Brass manufacture Hornady
Charge weight and powder 77.4 Ramshot Magnum
Bullet make, weight and style (VLD, Hybrid, etc.) 225 ELDM & 230 ATIP
Distance to lands .020
Overall length 225 - 3.668 230 - 3.804 (single feed only)
Barrel length and twist Bartlein 26in 8 twist heavy
Muzzle velocity 2850

Does anyone have a load for the 250 A Tip using Retumbo or H 1000?
 
ADG brass
79.3gr H1000
Hornady 225gr ELD-M
CBTO 2.855 (0.020 jump)
30" Bartlein HV with 1:9 twist
2982 fps

Barrel has sped up after 150 rounds - current velocity is 3020 fps
 
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