NRL Hunter barrel profile for lite division

[LRshooter6mm]

With my current build list I have a no more than 3.5lb for a barrel and muzzle break. I prefer steel but am not opposed to carbon fiber. What contour and length would you recommend to make lite division but still have accurate strings of fire? Caliber would be a 6.5 CM.

What I currently own and will be using:
-Curtis valor
-Leupold Mk5 5-25 with MPA scope base
-Gunwerks bipod
-KRG Bravo

 

[Wallaback]

24" .89 Carbon Fiber 6.5CM pre-fit barrel w/ barrel nut from IBI weighs exactly 3lbs 2oz. So if you go with a 20" barrel you'd probably have enough weight savings for a brake.

 

[021411]

With my current build list I have a no more than 3.5lb for a barrel and muzzle break. I prefer steel but am not opposed to carbon fiber. What contour and length would you recommend to make lite division but still have accurate strings of fire? Caliber would be a 6.5 CM.

What I currently own and will be using:
-Curtis valor
-Leupold Mk5 5-25 with MPA scope base
-Gunwerks bipod
-KRG Bravo

Funny I’m building a rifle for Heavy right now. I’ll be shooting Team but same same on the equipment rules.
I went with a 26” Proof carbon blank to be chambered in 6.5CM. Said and done I’m projected to be around 13.54 pounds. That’s with a suppressor and a triple pull.
If I use my Bravo with the enclosed forend the weight will jump to 14.4 pounds.

Kelbly Prometheus
26” Proof carbon blank
Leupold MK4HD 6-24 w/ A419 Hunt rings
MDT triple pull (waiting on black Fri)
Grayboe Phoenix 2 with MDT bottom metal
SiCo Harvester 30

 

[TheOfficeT-Rex]

PVA .750 taperless contour could be an interesting option and still let you get 5/8 threads.

 

[021411]

Weighed my Proof carbon blank today. Part number 100929 hit my scale at 3 pounds 5.6 ounces. I’m sure it’ll be an ounce or so less (maybe more) once it gets chambered up and threaded. This is a 26” barrel.

 

[Alec Cochran]

My Bartlein 3b with conservative fluting from Bugholes finished at 24” and chambered 6.5 CM weighs 3 lb 12 oz with APA Lil Bastard Gen 3. Could get very close to 3.5 lbs with a swap to SRS Ti brake and/or deeper fluting.

 

[021411]

Forgot to update my finish weight on the Proof. The 26” Sendero started at 53.6 oz. Once chambered and threaded, it came out to 48.3 oz which is 3 pounds even.
A self timing SRS Ti Pro 5 brake in 5/8-24 was 2.4 oz on my scale.

I have a 750 Taperless blank ordered with aggressive spiral fluting and will follow up with the weight once it comes in in a few weeks.

 

[021411]

The barrel came in. In case anyone searches later on and comes across this thread about lightweight barrels for NRL Hunter.
7mm 8 twist Preferred Barrel Blanks .750 Taperless contour at 25” unchambered. The fluting is the helical 12 style. Weight on my scale is 45.5 oz.