300 PRC Build

[WeatherbyFan]

Hi All,

1st post here and thanks for the add, looks like an awesome forum with great information.

I'm just collecting the parts for my 300 PRC build and and can't wait to have it all together,I just received my Manson Reamer, Hornady ammo and Brass, build as follows,

Stiller Predator Action
Barrel TBD- a 26"#3 Fluted 1-9.5 twist some sort
Timney Calvin Elite Trigger 2.5lbs
Wyatts Mag Box
Stainless bottom metal
Wildcat Composite stock with palm swell fitted tony right hand, high comb and cheekpiece
Custom hand made brake.
topped with Talleys a Zeiss V4 4-16x44 Z-Plex
will be built by Gary Flach

 

[troupe]

Looking forward to hear your results. I am also new to the site and I am thinking of building one also. Like to hear your velocities. Where did you find the ammo ?

 

[alf]

Hi All, 1st post here and thanks for the add, looks like an awesome forum with great information.

Welcome aboard......more info, less attitude than the fire......

 

[WeatherbyFan]

Looking forward to hear your results. I am also new to the site and I am thinking of building one also. Like to hear your velocities. Where did you find the ammo ?

I bought, ammo,dies and brass off Gunbroker, soon as its built and Im off to the range with it !

 

[troupe]

Thanks for the reply back.

 

[FrankG]

Hi All,

1st post here and thanks for the add, looks like an awesome forum with great information.

I'm just collecting the parts for my 300 PRC build and and can't wait to have it all together,I just received my Manson Reamer, Hornady ammo and Brass, build as follows,

Stiller Predator Action
Barrel TBD- a 26"#3 Fluted 1-9.5 twist some sort
Timney Calvin Elite Trigger 2.5lbs
Wyatts Mag Box
Stainless bottom metal
Wildcat Composite stock with palm swell fitted tony right hand, high comb and cheekpiece
Custom hand made brake.
topped with Talleys a Zeiss V4 4-16x44 Z-Plex
will be built by Gary Flach

If your just going to be shooting hunting bullets in the 212gr. Or less a 1-10 twist barrel will work just fine.

Hornady settled on a 1-8.5 twist barrel for SAAMI spec. We made them quite a few barrels for testing in everything from 8 twist to 10 twist.

If your going to shoot heavier bullets than I would say go faster twist.

If I recall correctly the 225’s should shoot fine thru a 10 twist but you might be giving up some bc on the bullets.

Earlier last year I built a F open gun in .300PRC. I’m only running 225’s and 230’s thru it. According to my twist cacl’s The 230’s need a 1-9.24 twist min at 2800fps. At 3000fps they need something like a 1-9.52 if memory serves me correctly. I put a 1-9 twist on my gun. I’m running the bullets at an honest 2900fps out of my gun. Gun shoots excellent.

Later, Frank
Bartlein Barrels

 

[WeatherbyFan]

Thanks for the reply back.

I see there's more 300 PRC brass on GB now

 

[WeatherbyFan]

If your just going to be shooting hunting bullets in the 212gr. Or less a 1-10 twist barrel will work just fine.

Hornady settled on a 1-8.5 twist barrel for SAAMI spec. We made them quite a few barrels for testing in everything from 8 twist to 10 twist.

If your going to shoot heavier bullets than I would say go faster twist.

If I recall correctly the 225’s should shoot fine thru a 10 twist but you might be giving up some bc on the bullets.

Earlier last year I built a F open gun in .300PRC. I’m only running 225’s and 230’s thru it. According to my twist cacl’s The 230’s need a 1-9.24 twist min at 2800fps. At 3000fps they need something like a 1-9.52 if memory serves me correctly. I put a 1-9 twist on my gun. I’m running the bullets at an honest 2900fps out of my gun. Gun shoots excellent.

Later, Frank
Bartlein Barrels

Hey Frank

thank you for the info, Ill be shooting at the range mostly and a bit of Elk hunting with it, Im looking at testing out the two factory offering to start but did pick up some 220gr Lapua ScenarL and Berger 210gr VLD Hunting bullets to test out,

Ive ordered a 9.5 twist barrel so should be a good compromise.

Thanks again
Don
WF

 

[Murray Brook]

Don
Who made your reamer
Boyd

 

[FrankG]

Hey Frank

thank you for the info, Ill be shooting at the range mostly and a bit of Elk hunting with it, Im looking at testing out the two factory offering to start but did pick up some 220gr Lapua ScenarL and Berger 210gr VLD Hunting bullets to test out,

Ive ordered a 9.5 twist barrel so should be a good compromise.

Thanks again
Don
WF

Welcome Don! Let us know how it works for ya!

Later, Frank

 

[FrankG]

Don
Who made your reamer
Boyd

Looking at his reamer and go gauge. Looks like Manson.

 

[Mr.Knowit all]

If your just going to be shooting hunting bullets in the 212gr. Or less a 1-10 twist barrel will work just fine.

Hornady settled on a 1-8.5 twist barrel for SAAMI spec. We made them quite a few barrels for testing in everything from 8 twist to 10 twist.

If your going to shoot heavier bullets than I would say go faster twist.

If I recall correctly the 225’s should shoot fine thru a 10 twist but you might be giving up some bc on the bullets.

Earlier last year I built a F open gun in .300PRC. I’m only running 225’s and 230’s thru it. According to my twist cacl’s The 230’s need a 1-9.24 twist min at 2800fps. At 3000fps they need something like a 1-9.52 if memory serves me correctly. I put a 1-9 twist on my gun. I’m running the bullets at an honest 2900fps out of my gun. Gun shoots excellent.

Later, Frank
Bartlein Barrels

I run one of your 1-8.5 twist 27 in. on my 300WM and it shoots very well. I will keep the same size/type of barrel on the 300PRC build. I see that Hornady was getting 2811 fps. out of a 24 in. barrel. Maybe I can get over 2900 with the longer barrel....? IMO I believe that a 10 twist is obsolete for ELR shooting. I think you need at least a 9 twist depending on the projectiles you want to shoot.. JMO
I don't think that I will notice much between the two cartridges.... I am excited to see.

 

[WeatherbyFan]

Don
Who made your reamer
Boyd

Hey Boyd
How ya doing ? Yes it’s just a SAAMI spec Manson Reamer, ordered through Gary Eakin @ Bighorn Sales

 

[WeatherbyFan]

Ok the #4 barrel for my 300 PRC Stiller action build hasn't shown up yet.................so I had a Kimber Montana 8400 300 win mag donor laying around and a 26" Hells canyon Carbon Fibre 1-9.5 twist barrel so my gunsmith suggested we put a 300 PRC together with that action,

He lengthened the mag box to 3.7” and opened the bottom of the action up a tiny bit, hand made one of his special brakes, trued and squared the action, lightened the trigger, some pewter gunkote, added palm swell and high comb on the Montana stock and a cool paint job as well as a carbon Fibre Bolt handle, Talleys and a Zeiss V4 4-16x44 on top and Im off to the range in the morning !

 

[Murray Brook]

Fine looking rifle. Hope it shoots as good as she looks. Let us know how she does.

 

[WeatherbyFan]

Fine looking rifle. Hope it shoots as good as she looks. Let us know how she does.

Thanks Boyd, yeh Im a little skeptical of a CF barrels but its growing on me, Im curious as how it will shoot !

 

[kwil13]

I would like to know how's the recoil, I am thinking about building a 300 prc vs. a 338 lm for big game hunting.

 

[wboggs]

What size "big game" ? A fast 338 will be better when you hunt large animals.

 

[Zero333]

What size "big game" ? A fast 338 will be better when you hunt large animals.

A large 338 kicks hard when shot from a 8 lb rifle.

 

[wboggs]

It does, no doubt. But it is a sure fire killer. A 30 cal is not in the same league. You can put on a break. You never notice the recoil when hunting. Light handloads are great for practice.