300 PRC

[Orcon]

After months of waiting on parts and accessories, it's finally here. Just in time for the panic to make all the ammo and reloading components vanish.
Left to right: 308Win, 30-06, 7mm REM, 300 PRC


I managed to snag a couple boxes of match ammo from the Runnings in Glendive so I can at least sight it in and have some brass to start hand loading.

 

[Gtscotty]

Very nice! But how can you post this up without giving us the parts list?

Guessing on some of these.

- KRG Bravo
- Defiance Deviant Hunter?
- Proof barrel 28"?
- trigger?
- Bushnell DMR II?
- Warne rings?

 

[horsemen61]

I bet she is a tac driver!

 

[Orcon]

Ha, sorry. You pretty much nailed it though. I bought everything on the cheap via the classifieds on the Accurate Shooter and Long Range Hunter boards.

KRG Bravo $425
Defiance Deviant Hunter $1100
Proof 28" 9 Twist $675
Timney Calvin Elite (Already Had)
Bushnell DMR II G2 $1000
Warne Maxima QD rings $86
APA Lil-B Gen 2 $90

Chambered and assembled by Alliance Custom Armory in SD.

 

[Demi-human]

Nice Rifle! And what also appears to be a very small horse.

Fun day!
Looking forward to some velocity numbers.

 

[Orcon]

@Demi-human that's Lola. She's less of a small horse and more of a GIANT schnauzer.

Hornady 225gr ELD-M Factory ammo:

10 shots
2941 AVG
23 SD 48 ES
Two Different groups both measured about an inch at 120 yards, three touching and two high and right in both cases. Not super impressed but we'll see what handloading can do once the brass comes out of the tumbler.

I've got 200 each 225gr ELD-Ms and a pound of both H1000 and Ramshot LRT to try out.

 

[Nature Boy]

Watching with interest as I’m putting the plans together to build a 300 PRC too

Is that a Hellfire brake? How was the recoil?

 

[brasscollector]

I am definitely watching with interest too. I am also looking around for brass, dies and whatnot and seeing it mostly out of stock.

 

[Orcon]

@Nature Boy It's an APA Little B@stard, recoil is like a 30-06. Certainly more tame than my 300 WSM. I haven't weighed it yet but here are the manufacturers weight claims:

KRG Bravo 3.2 lbs
Proof Blank 3.5 lbs
Deviant Hunter 2.4 lbs
Bushnell DMRII 2.3 lbs
Warne Rings 0.4 lbs
APA Little B 0.25 lbs
Atlas Bipod (Not pictured) 0.8 lbs
Magazine ?

Total: 12.45 lbs

 

[LoonWulf]

After months of waiting on parts and accessories, it's finally here. Just in time for the panic to make all the ammo and reloading components vanish. View attachment 913828
Left to right: 308Win, 30-06, 7mm REM, 300 PRC
View attachment 913831
I managed to snag a couple boxes of match ammo from the Runnings in Glendive so I can at least sight it in and have some brass to start hand loading.View attachment 913835

Sexy beast!

The .300prc is on my list of more interesting cartridges, and this is a nice platform for it.

 

[horsemen61]

@Nature Boy

what parts will you use to build a .300 PRC

 

[troy fairweather]

Nice rig, clearly you like the action because you picked it, like to see how you like it after some time.I'm not big fan of 30cal but if I did build one the prc would be up there.

 

[Nature Boy]

I’m going to use this FN Mauser target action and build an old school big game rifle, blued and with some really nice wood

 

[Orcon]

Today was a fantastic train-wreck. I do have some data to share though, not sure how helpful it is considering my issues.

Firstly, the issues...wind was into 30 MPH territory and I couldn't keep the target up. My muzzle brake started turning out of its own volition and then I found that my action screws were loose, so groups were erratic at best, then the rain started. Velocities seem low based on published data with 24" barrels.

Load Info:
Hornady Brass
WLMR
COAL 3.70

H1000
75.5gr 2819 avg 19 sd 39es
76gr 2845 avg 23 sd 45 es
76.5gr 2852 avg 11sd 22 ES
77gr 2898avg 17sd 32es
77.5 2889 18sd 33es

Ramshot LRT
86.8gr 2989avg 24sd 46es
87.1 2857avg 42sd 84 es
87.4 2879avg 27sd 52es
87.7 2999 12 sd 24es

 

[MCMXI]

@Orcon, this is a cool thread. I was thinking about a Proof 300 PRC barrel for my Accuracy International AWM (.300 Win Mag) but with a 3.65" max COAL due to the magazine I'm not sure the view is worth the climb.

Any thoughts on adding a suppressor to your setup?

 

[Orcon]

@Orcon, this is a cool thread. I was thinking about a Proof 300 PRC barrel for my Accuracy International AWM (.300 Win Mag) but with a 3.65" max COAL due to the magazine I'm not sure the view is worth the climb.

Any thoughts on adding a suppressor to your setup?

You can make it work if you're willing to seat the bullets deeper. Bullets shorter than 212 ELD-X or Berger 215 Hybrids can fit in a standard AICS magazine with no problem and still hit max velocities. H1000 max loads at my seating length was less than 90% case fill, plenty of shakey-shake after seating. At this time I'm more interested in a $1.30 noise dampener that I can buy same day over one that costs $200 over MSRP and takes 15 months to recieve.

 

[Olon]

Nice Rifle! And what also appears to be a very small horse.

Fun day!
Looking forward to some velocity numbers.

Lol I thought it was a goat at first glance

Awesome rifle, Orcon

 

[horsemen61]

I’m going to use this FN Mauser target action and build an old school big game rifle, blued and with some really nice wood

View attachment 913923

Just curious is that action up to the task to handle that kind of pressure I’m not sure @Nature Boy thats why I’m asking as long as it’s safe I say COOL!!!!

 

[MCMXI]

You can make it work if you're willing to seat the bullets deeper. Bullets shorter than 212 ELD-X or Berger 215 Hybrids can fit in a standard AICS magazine with no problem and still hit max velocities. H1000 max loads at my seating length was less than 90% case fill, plenty of shakey-shake after seating. At this time I'm more interested in a $1.30 noise dampener that I can buy same day over one that costs $200 over MSRP and takes 15 months to recieve.

Thanks for the tip re bullet selection. You'll have to elaborate on a "$1.30 noise dampener" ... is that a pair of earplugs? Suppressors are well worth the cost and the wait .... to me anyway. If you're up in Kalispell and want to try out a couple or three then PM me.

 

[Orcon]

It is ear plugs; saves me 9" of barrel length plus the government bull****. And I can say that I've never "accidentally" built a hearing conservation "device". Seating depth info coming soon.

 

[Orcon]

Using the Berger method of finding proper seating depth:

76.5gr H1000
COAL
3.675 Low left
3.625 1st dot
3.575 2nd dot
3.525 3rd dot


I'd say you can run a standard length AICS mag and still have good utility with this cartridge. The load was not compressed with any of these seating depths.

Pictures attached warts and all.

 

[MCMXI]

@Orcon, what's your bullet jump to the lands with those four loads?

 

[Orcon]

3.700" is what I originally did load development with which was 0.025" from lands. The groups were not stellar. After that I decided to pick my lowest SD charge and follow the Berger VLD seating depth method so the first low/left group was 0.050" off then I backed out 0.040" from there. So the best group was about 0.090" from the lands.