7-300 PRC, Pretty Impressive

[weatherbee]

Here are some results for my 7-300 PRC. I actually built two of them. Both are dressed with AG Composite stocks, trigger tech diamond triggers, Nightforce NX8 Scopes. Bartlein had an TBAC Ultra 5 and the Proof had a Cortina Tuner Break. The Bartelin dressed weighs right at 10 LBS, the Proof weighs 8.5 LBS.

-24" Bartlein 1:8 Twist
-Curtis Custom Helix Hybrid Hunter

-22" Proof 1:8.4 Twist
-Defiance Anti

Shooting in Southeast Central Texas. 350 FT of Elevation

24" Bartlein - Berger 195 Grain EOL, 84 Grains of N570, Lapua Brass. 215 Primer. Average of 3180 FPS. 1/4" MOA Groups
Berger - 180 Grain Hybrid. 83.5 Grains of N570, Lapua Brass. 215 Primer. Average of 3290 FPS. 1/4" MOA Groups

22" Proof - Berger 180 Grain Hybrid. 83.5 Grains of N570, Lapua Brass. 215 Primer. Average 3190 FPS. 1/2" MOA Groups (still aint done tuning this one)

Recoil is minimal, 195 GR recoil is much more than 180. One of the easiest to tune rounds ive ever shot. Believe load development was 18 rounds on the Bartlein 24". Used same data for 22" proof. it took 12 shots working up from 81 Grains of N570.

I think you would be hard pressed to find another hunting round that is ballistically superior that doesn't come with proprietary brass. Simple neck down of 300 PRC Lapua Brass.

Brass Prep - Neck down using .311 Bushing, Redding Bushing dies, Forster Press. Chamfer and debur. No annealing, no case trim.

COAL was based on reamer prints. Reamer was based on the 195's. 3.66. Did not measure CBTO.

Load at your own risk, these are only my numbers. not responsible for any accidents for following my load data

 

[highdrum]

That's faster than a 28nos which holds 8gr more powder. Impressive!

 

[haisardao]

That cartridge is a hammer! What free bore did you use? Can you share the reamer info? Thanks

 

[Arken7mm]

Here are some results for my 7-300 PRC. I actually built two of them. Both are dressed with AG Composite stocks, trigger tech diamond triggers, Nightforce NX8 Scopes. Bartlein had an TBAC Ultra 5 and the Proof had a Cortina Tuner Break. The Bartelin dressed weighs right at 10 LBS, the Proof weighs 8.5 LBS.

-24" Bartlein 1:8 Twist
-Curtis Custom Helix Hybrid Hunter

-22" Proof 1:8.4 Twist
-Defiance Anti

Shooting in Southeast Central Texas. 350 FT of Elevation

24" Bartlein - Berger 195 Grain EOL, 84 Grains of N570, Lapua Brass. 215 Primer. Average of 3180 FPS. 1/4" MOA Groups
Berger - 180 Grain Hybrid. 83.5 Grains of N570, Lapua Brass. 215 Primer. Average of 3290 FPS. 1/4" MOA Groups

22" Proof - Berger 180 Grain Hybrid. 83.5 Grains of N570, Lapua Brass. 215 Primer. Average 3190 FPS. 1/2" MOA Groups (still aint done tuning this one)

Recoil is minimal, 195 GR recoil is much more than 180. One of the easiest to tune rounds ive ever shot. Believe load development was 18 rounds on the Bartlein 24". Used same data for 22" proof. it took 12 shots working up from 81 Grains of N570.

I think you would be hard pressed to find another hunting round that is ballistically superior that doesn't come with proprietary brass. Simple neck down of 300 PRC Lapua Brass.

Brass Prep - Neck down using .311 Bushing, Redding Bushing dies, Forster Press. Chamfer and debur. No annealing, no case trim.

COAL was based on reamer prints. Reamer was based on the 195's. 3.66. Did not measure CBTO.

Load at your own risk, these are only my numbers. not responsible for any accidents for following my load data

In building a 7-300 PRC can you use the same action, bolt and magazines for 7 PRC, 300 PRC and 7-300 PRC in the same rifle and just swap out the barrel? The 7mm PRC's action requires a 0.535" long action magnum bolt face, will that work with the 300 PRC and 7-300 PRC? I ask because I'd like to build a rifle that can fire different cartridges with just a barrel swap in a XLR Element 4.0 magnesium chassis.

 

[Phil Rizzo]

This necked down case keeps the factory shoulder angle and body taper after firing?

 

[VinceMule]

What do you think the benefits are over a 28 Nosler?

Thanks in Advance!

 

[Phil Rizzo]

or the 28 Sherman Magnim?