Something Different

Jan 31, 2010
409
32
28
Dallas, TX
#1
Back in 2012-2014, it seemed impossible to get a Surgeon 591r. Granted I didn't look all that hard, but when I saw one for sale at CS Tactical, I quickly jumped on it with the idea of building a coyote rifle in 22-250ai, but that never happened. Like most of you, my collection has grown over the years and all of my 'purpose built' rifle needs have been met. Back to the Surgeon... With the previous administration's NFA gun trust reform, I decided to go ahead and Form 1 the 591r for a truck gun or similar. Fast forward a couple more years and this is the result:



.308 Win
Surgeon 591r
KRG Whiskey 3 Gen4
Bartlein Barrel
BarLoc
SAS Resistor
Mod22 Trigger
SPUHR
S&B US 5-20

It's a quick mock-up as it's not yet bolted to the chassis. Of all my rifles, this one just might be my favorite. Plan is to hand load 135g SMK supers and 185g Juggernaut subs. Interested to see what sort of velocity it will be bring.
 
Jan 31, 2010
409
32
28
Dallas, TX
#6
@Shrubjr With the barrel removed, it's 11" from end-to-end. Installed it's like 10".

I took some muzzle velocity readings with my 135g SMK loads and H322 powder. Suppressed shooting at 546ft, no wind, hot @ 96F, 43% humidity, and 29.98inHg.

Results:
41 - 2338
41.5 - 2394
42 - 2478
42.5 - 2422
43 - 2489
43.5 - 2545
44 - 2548
44.5 - 2612
45 - 2590
45.5 - 2666
46 - 2679
46.5 - 2704 (compressed)
47 - 2712 (compressed)

43.5-44 seems to be a sweet spot for common velocity. 46, 46.5, and 47 were in a very tight cluster. Going to load up 5 rounds of each to check SDs.

I shot some loads of Trailboss and 185g Juggs for stability in this 11.25" twist Bartlein with amazing results. 10.6g stacked the Juggs at 100 yards. No idea if it's subsonic because checking stability was the only goal.
 
Likes: Boltfluter
Nov 15, 2013
90
5
8
#7
Wow! Those are some impressive results! Thanks for takin time to share 'em with us! Your gonna make me second guess the 10" bolt action 300blk I'm doin.
 
Jan 31, 2010
409
32
28
Dallas, TX
#8
IMO, caliber is less important than form factor.

The BarLoc makes barrel swaps easy and all you’d need is a new bolt. I originally intended to utilize the West Texas Ordanance Switch Lug, but after talking with @LongRifles Inc., the BarLoc loads the threads where as the Switch Lug does not. I couldn’t be happier with how this rig turned out.
 
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spelunk

Gun Loving Redneck
Feb 19, 2010
516
19
18
Prosser, WA
#12
Very cool! I'd love to have something like that. I love how the suppressor and barrel are basically the same length! Might look good with a Brevis II on there....
 
Jan 31, 2010
409
32
28
Dallas, TX
#15
Drop that BA into a folding chassis and you can use a tennis racket case to carry that thing around in (very low profile).
The Wiskey 3 is a folding chassis. I envisioned riding my motorcycle to the range with the rifle in a backpack. Unfortunately, timing sucks because I just sold the bike. I see myself picking up a new set of wheels over the fall/winter months. We'll see.
 
Aug 6, 2008
1,106
81
48
Boise area, Idaho
www.krg-ops.com
#19
@Massoud Looking at the side profile, do you have a part that would allow me to clip-on a PVS-30?
With that can being so close, our INVR and NVMC both won't fit as they won't clear the can. The Enclosed Forend might fit around that can. Actually you might be able to run the INVR backwards so it's only inside the barrel channel and not sticking out forward of the forend. I'll see what I can find out. Thank you for your business!
Justin
 
Jan 31, 2010
409
32
28
Dallas, TX
#20
Those are some amazing speeds for such a short barrel. Looks like you picked the correct powder. Nicely done. Looking forward to group
shots when you have a good load.:cool::cool:

Paul

www.boltfluting.com
No doubt - the velocity spread shocked the hell out of me too. There isn't much if any data on SBR bolt guns and thus it was a shot in the dark as far as starting points. I have to give @Zak Smith credit for that. We discussed this project several months back, right when I was deciding to run either the Resistor or Ultra 9.
 
Likes: Boltfluter
Jan 31, 2010
409
32
28
Dallas, TX
#21
I’m still fireforming brass until starting the load development process, and while I’m by no means shooting groups with this rifle, it has been quite interesting to shoot at distance. With a 100 yard zero, it takes me 19 mils of elevation to get to the 1036 yard gong. By contrast, my 6x47L takes 7.5 mils elevation at the same distance. TOF for the short 308 seemed to be around 2 seconds, but will need to run the numbers to see if that’s accurate. Wind was blowing the 135g SMK another 5 mils off Target.
 
Jul 28, 2011
287
58
28
St. Louis, MO
#24
Back in 2012-2014, it seemed impossible to get a Surgeon 591r. Granted I didn't look all that hard, but when I saw one for sale at CS Tactical, I quickly jumped on it with the idea of building a coyote rifle in 22-250ai, but that never happened. Like most of you, my collection has grown over the years and all of my 'purpose built' rifle needs have been met. Back to the Surgeon... With the previous administration's NFA gun trust reform, I decided to go ahead and Form 1 the 591r for a truck gun or similar. Fast forward a couple more years and this is the result:



.308 Win
Surgeon 591r
KRG Whiskey 3 Gen4
Bartlein Barrel
BarLoc
SAS Resistor
Mod22 Trigger
SPUHR
S&B US 5-20

It's a quick mock-up as it's not yet bolted to the chassis. Of all my rifles, this one just might be my favorite. Plan is to hand load 135g SMK supers and 185g Juggernaut subs. Interested to see what sort of velocity it will be bring.
Nice hardware!
 
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