Bighorn Origin Build Thread

[Hondo64d]

Post your Bighorn Origin builds here.

Mine is another masterpiece by Jon Beanland.

Bighorn Origin
#3 Bartlein 5R chambered in 6.5 Creedmoor finished at 24”
McMillan Adjustable Game Scout in Desert Carbon Ambush
Triggertech Diamond
APA Bottom Metal
Bighorn 20 MOA rail
SWFA rings
Bushnell 3-12 LRTSi
Flush cups on left side.

Load development was easy. Wind was unusually calm so I decided to do it at 500. Not picky at all. Biggest group of the day was the 130gr Berger AR Hybrids at .632 MOA. Best was 42gr H4350 behind the Berger 140gr Elite Hunter. That went .498 MOA. Five 5-shot groups with 5 different loads averaged .555 MOA at 500 yards. Taking this one for Caribou in a couple of weeks.

John

I picked the best charge from my 500 yard load development and put 5 rounds on paper at 100 today to make sure I had a good zero. Wind was gusting hard and bench was really wobbly or it would have been better. Made a .1 adjustment and reset the zero indicator. Battery ran out on my chronograph so I made a guess on velocity and took it to 820 to use the velocity truing function on Ballistic AE. Group was 4.5” low at 820 so I put that in Ballistic AE and it determined true velocity was 2790. Fired one more group at 820 using 2790 velocity and it was centered on aiming point. I think we’re ready for Caribou.

John

 

[Olen_4504]

I’ll bite

Bighorn Origin
Vortex razor gen 2 ebr-7c
Badger rings
26” hawkhill 6br M24
Triggertech diamond
Foundation Exodus stock
Hawkins DBM
Area 419 hellfire

 

[spiche]

Origin Action
26" Krieger, chambered in 6mm Creedmoor by Keystone Accuracy. .104 freebore
Triggertech Diamond
Manners T4A
Athlon Ares ETR, Seekins 34mm rings - .94 height
Area 419 Hellfire mount, currently wearing an Energetic Armament Vox silencer.
Harris Bipod on Area 419 arcalock rail.

 

[spife7980]

Following protocol I can see so I’ll state the obvious lol

Bighorn Origin (duh)
26” Criterion 6 dasher 7 twist mtu
Bix tac sport pro single stage
MDT acc
Aics+pva kit
ARC M10s
Athlon Cronus btr
419 mount plus omega

 

[Precisiondada]

Sure why not...

Bighorn Origin
24” Bartlein M24
Manners T4a
Triggertech Diamond
Vortex AMG
ARC M10’s
419 Hellfire
Atlas C&L

 

[gsd1983]

I’ll play.

Origin
20” Proof CF .308
KRG Whiskey3 cerakoted by DCPrecisionLLC
TriggerTech Primary
SWFA 3-15
Vortex Pro Rings

 

[King_beardsly]

Bighorn Origin
Krg bravo (mpa comp in waiting)
26" medium palma rock creek 6creed
Pva jet brake
Triggertech diamond
Seekins rings
Nikon fx1000 6-24

 

[RFutch]

Origin/PVA 26” 6.5x47
PVA Jetblast Brake
Bergara BMP Chassis with MDT Grip
Trigger tech primary
Swfa SS 5-20x50 in mk4 rings

Origin/ Factory Savage 20” .223 barrel
KRG bravo
Trigger tech primary
Weaver GST 3-10x40 in Seekins rings

 

[Hondo64d]

Bump. Bound to be more Origin builds out there...

John

 

[King_beardsly]

Steel 5/16x24 Bolt Knob Adapters

Adapt your bolt to a standard male thread with these stainless bolt handle adapters. They are lathe spun and threaded to a Class 3 fit, and allow you to use most aftermarket bolt knobs. These have become necessary in the last few years as action makers go to smaller stock in their bolt-making...

www.area419.com

 

[andrewsben]

Steel 5/16x24 Bolt Knob Adapters

Adapt your bolt to a standard male thread with these stainless bolt handle adapters. They are lathe spun and threaded to a Class 3 fit, and allow you to use most aftermarket bolt knobs. These have become necessary in the last few years as action makers go to smaller stock in their bolt-making...

www.area419.com

View attachment 7115091

I saw this in the origin thread and started to order one. Then I saw they had the option for the defiance tenacity as well. So I ended up with 2.

 

[kriller134]

Here’s mine
Mdt ess chassis
Pva/rock creek m24/40 6.5 creed
Area 419 hellfire brake
Triggertech special
Razor g2 ebr-7
Arc rings

 

[Sterling W]

I have an origin on order. I'll try to remember to post here when it's done. I'm a photographer so there will definitely be some photos of it on here and instagram - @sterling.a.williams

 

[King_beardsly]

My update origin setup
MPA comp chassis
PVA medium palma 26" 6cm
PVA jet blast
Trigger tech diamond
Nikon fx1000
Seekins rings
Atlas v8

I've got few more tweaks to do
before it's perfectly dialed

 

[RFutch]

Update to my pic above. Finally got my third Origin put together. I think I might have a problem...

PVA 224 Valkyrie 26” Heavy Palma 1/7
KRG Bravo
TriggerTech Flat Primary
NF 3.5-15X50 in Sekins Rings

Using old AI 223 polymer mags. Shot 60 rounds with no malfunctions today.

 

[King_beardsly]

22" Proof in 6 Creedmoor
HS Precision Sendero take-off stock
HS Precision DBM
Hawkins Hybrid Rings
Jewel trigger
Ultra 7
March 3x24
90gr TGK @ 3050fps

That's a pretty baller scope

 

[stevieb92]

My Origin build is as follows:
Bighorn Origin
Bartlein 1:7.5 twist Marskman contour 5R barrel finished at 26 inch
Chambered by SPR in 6mm Creedmoor for 108 ELD-M
MPA BA Comp chassis (tungsten)
Vortex Razor Gen 2 4.5-27x56 EBR-2C mrad
Trigger Tech Special flat black
Vortex/Seekins PMR
Thunderbeast brake (TBAC Ultra 7 is in jail)

 

[King_beardsly]

Didn't know seekins made a rail for the bighorns

 

[stevieb92]

Didn't know seekins made a rail for the bighorns

You're right! I was thinking of one of my Rem 700 builds. I will correct it. Thanks for catching that!

 

[mercracing]

I’ll jump in.
Bighorn Origin
26” Varmint contour 224V
Huber Trigger
Vortex razor gen two 4-27 EBR 2C
MPA Hybrid folding chassis
SiCo Harvester
Atlas bipod

 

[Undrgrndprdcts]

Watching this thread.

 

[CHADPEZZLE]

My first rifle I've ever built/chambered.

Big Horn Origin
Bartlein Barrel 3B contour cut to 18.5"
Chambered in 7mm/08
Grayboe Terrain Stock
TT Trigger
PTG bottom metal
Bushnell LRHS 4.5-18

 

[Meety Peety]

Second barrel for this Origin
26" Bartlein MTU 1:8 5R chambered in 6.5x47 by XR Gun Works
MPA oldschool comp chassis
Vortex Razor Gen 2 in Spuhr 4001
Trigger Tech Diamond pro curve
Area 419 Sidewinder

 

[King_beardsly]

I miss the old school comp chassis with the castle cut and no ambi bolt cut

 

[Marksman]

For you guys running the 12 pt barrel nut, how are you measuring your torque?

 

[LawnMM]

For you guys running the 12 pt barrel nut, how are you measuring your torque?

Torque wrench

 

[kriller134]

Second barrel for this Origin
26" Bartlein MTU 1:8 5R chambered in 6.5x47 by XR Gun Works
MPA oldschool comp chassis
Vortex Razor Gen 2 in Spuhr 4001
Trigger Tech Diamond pro curve
Area 419 Sidewinder

View attachment 7133880

View attachment 7133881

Off topic here, but is the adapter plate necessary for the anvil 30? You can’t mount it on the stock plate and stud it comes with?

 

[Marksman]

Torque wrench

Attached how.

 

[J McGriddle]

Attached how.

1-1/8 12pt. Flare nut. I made the torque adapter. You will have to use a calculator to get exact torque.

 

[LawnMM]

Attached how.

 

[Meety Peety]

Off topic here, but is the adapter plate necessary for the anvil 30? You can’t mount it on the stock plate and stud it comes with?

You could screw it directly onto the stock Leofoto plate but due to the placement of the little set screw on the underside of the stock plate and the small size of the "stem" of the Anvil 30, you would have no retention on the ball head (Other than the torque you applied when you tightened it down). Movement in the counterclockwise direction would basically unscrew the ballhead and you would have it coming loose all the time, especially with a rifle mounted. You could probably solve this problem by drilling a hole in the stock Leofoto plate that is closer to the center of the stem which would allow you to run a screw into the Anvil 30. I have not done it or seen anyone do it, but I'm sure it could be done if you were inclined to give it a try.

 

[kriller134]

You could screw it directly onto the stock Leofoto plate but due to the placement of the little set screw on the underside of the stock plate and the small size of the "stem" of the Anvil 30, you would have no retention on the ball head (Other than the torque you applied when you tightened it down). Movement in the counterclockwise direction would basically unscrew the ballhead and you would have it coming loose all the time, especially with a rifle mounted. You could probably solve this problem by drilling a hole in the stock Leofoto plate that is closer to the center of the stem which would allow you to run a screw into the Anvil 30. I have not done it or seen anyone do it, but I'm sure it could be done if you were inclined to give it a try.

Thanks for the info! That makes sense. I’m assuming that the rrs plate is bolted to the anvil 30 to prevent it from loosening? Thanks for your help. I’m looking to get the same setup as yours and it’s confusing me not being able to see it in person.

 

[Meety Peety]

Thanks for the info! That makes sense. I’m assuming that the rrs plate is bolted to the anvil 30 to prevent it from loosening? Thanks for your help. I’m looking to get the same setup as yours and it’s confusing me not being able to see it in person.

Yea it is and the stem of the ballhead sits in a nice little pocket in the RRS plate. I'll snap a picture of it tomorrow when I get a chance. I see that you're in orange county.. if you are free Sunday and want to swing down to the Pala match you can check it out in person and shoot off of it.

Home | PractiScore

practiscore.com

 

[kriller134]

Yea it is and the stem of the ballhead sits in a nice little pocket in the RRS plate. I'll snap a picture of it tomorrow when I get a chance. I see that you're in orange county.. if you are free Sunday and want to swing down to the Pala match you can check it out in person and shoot off of it.

Home | PractiScore

practiscore.com

Got the clear for Sunday from the wife. I think I have enough ammo for the match. Gotta double check.

 

[Jackomason]

Any magnums out there? Everything work ok? (Saum/PRC/WSM)

 

[NICETRY]

Wife shot this one at this years Nightforce ELR match in Wyoming. Good for sending the 131 Blackjack bullet at 3340fps.

Bighorn Origin #2
25 SAUM / 7.5 twist 27” M24 Bartlien
Custom XLR Envy with Ingenuity Gunworks rail and mercury tube.
Bix’n Andy TacSport 2 stage
ARC rings and 5-25 ATACR F1
TBAC Ultra 7

 

[Joshf303]

Any magnums out there? Everything work ok? (Saum/PRC/WSM)

Yes Sir.... 7 SAUM fed out of Accurate mags. Nothing to it.

 

[mm1046256]

Anybody with a Bighorn Origin in a Cadex chassis? I have a barreled action on order at the moment from Altus Shooting Solutions w/Proof Research Competition profile barrel, 6.5 PRC, and I'm hoping there won't be any compatibility issues with my Cadex Field OT chassis (recoil lugs/picatinny rail). Currently have a MDT 12-rd (no binder plate) magazine for it as well.

 

[Browerka]

My Bighorn Origin
6mm Br chambered by PVA

 

[King_beardsly]

My Bighorn Origin
6mm Br chambered by PVA

View attachment 7138294

How do you like the 6BR from josh over at PVA, he did my 6creed for my origin and will be doing a 6BR AI for my TL3 that I just picked up.

 

[Browerka]

How do you like the 6BR from josh over at PVA, he did my 6creed for my origin and will be doing a 6BR AI for my TL3 that I just picked up.

The BRs and variants are so easy to load for. Combine that with good components and quality gunsmith it’s an awesome combination!

 

[King_beardsly]

My 6creed is an absolute hammer and I know the BR’s are inherently accurate and easy to tune.

 

[b6graham]

Wife shot this one at this years Nightforce ELR match in Wyoming. Good for sending the 131 Blackjack bullet at 3340fps.

Bighorn Origin #2
25 SAUM / 7.5 twist 27” M24 Bartlien
Custom XLR Envy with Ingenuity Gunworks rail and mercury tube.
Bix’n Andy TacSport 2 stage
ARC rings and 5-25 ATACR F1
TBAC Ultra 7
View attachment 7135171View attachment 7135172

damn. 00002

 

[m700.308]

Here are my twins.

Top is a 6BR
26" Bartlien, 7.25 twist, Heavy Palma
TT Diamond
MPA w/Weight Kit - 21.2lbs (because you know, BR's have a ton of recoil!)
419 Brake
Vortex Gen 2 4.5x27

Bottom is a .223
26" Bartlien, 7 twist, Heavy Palma
TT Diamond
MPA
419 Thunderbeast adapter
TB Ultra 7
Vortex AMG
It weighs just over 15lbs

Both chambered by WAR rifles out of Manassas VA. Hammers!!

 

[King_beardsly]

I’m sure that 6BR is probably a pleasure to shot with that little bit of weight behind it.

 

[725franky]

Anyone using the RRS 34mm mount on your Origin?

I have an Origin action on the way, as well as a Steiner P4xi 4-16 x 56 optic. I'd like to not have an overly large gap between the objective and my barrel (so as to keep a lower cheek-weld scenario). I am considering the RRS mount because it incorporates the level indicator into the mount (one less thing to buy and fiddle with), but I am worried that it may be kind of tall...

Any help?

 

[M_R_Woodard]

6mm dasher from Meredith Rifles

 

[King_beardsly]

6mm dasher from Meredith Rifles

How’s the dasher feed from the magpul magazine, any modifications needed

 

[Driftr76]

.260 Rem
26" 8 twist bartlein m24 w/ SPR Bugnut
Bix n Andy tacsport pro 2 stage
Manners t6a w/ gen 2 mini chassis
Heathen brake
Elite iron revolution bipod
Nightforce nxs f1

 

[M_R_Woodard]

Just got the rifle today and shot 50 rounds. Occasionally it would hang up on the last round. Probably going to order the mdt 6br magazine. I have an accurate mag 10 rounder I haven't tried yet.