NRL Hunter barrel profile for lite division

LRshooter6mm

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Minuteman

Oct 1, 2017

117

44

Nov 24, 2024

#1

• Nov 24, 2024

• #1

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

Up North and freezing.

Minuteman

May 12, 2020

44

90

Nov 24, 2024

#2

• Nov 24, 2024

• #2

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.

 

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021411

hot loads B==D - - -

Full Member

Minuteman

Dec 14, 2011

1,816

1,916

Houston, TX

Nov 25, 2024

#3

• Nov 25, 2024

• #3

LRshooter6mm said:

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

Click to expand...

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

 

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TheOfficeT-Rex

Small N, small x̄

Full Member

Minuteman

May 19, 2019

1,524

1,513

Nov 25, 2024

#4

• Nov 25, 2024

• #4

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

 

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021411

hot loads B==D - - -

Full Member

Minuteman

Dec 14, 2011

1,816

1,916

Houston, TX

Nov 25, 2024

#5

• Nov 25, 2024

• #5

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.

 

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Alec Cochran

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Supporter

Mar 26, 2022

67

12

Texas

Sunday at 9:59 AM

#6

• Sunday at 9:59 AM

• #6

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

hot loads B==D - - -

Full Member

Minuteman

Dec 14, 2011

1,816

1,916

Houston, TX

Sunday at 10:18 AM

#7

• Sunday at 10:18 AM

• #7

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.