June 11, 2026
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Bill Marr's journal of shooting, reloading and gunsmithing

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What's new?
  • [ January 26, 2025 ] 782 Custom Gunworks “HUNDO” Loading Block Editorial
  • [ January 26, 2025 ] How do rifle suppressors affect muzzle velocity? Precision Rifles
  • [ May 31, 2023 ] The A-Team Mini-14? Customizing a Ruger Mini-14 A-Team
  • [ April 30, 2023 ] Removing stripped and sheared screws from a rifle Gunsmithing
  • [ February 28, 2023 ] Cut and Crown a Winchester 94 30-30 Gunsmithing
Home308 barrel length accuracy

308 barrel length accuracy

6.5 Creedmoor

6.5 Creedmoor- Effect of Barrel Length on Velocity: Cutting up a Creedmoor!

February 22, 2016 Bill Marr 0

Since its introduction by Hornady in 2007, the 6.5 Creedmoor (sometimes shortened to Creed) has established a strong foothold in the US rifle market.  The 6.5 Creedmoor balances the excellent external ballistics of .264″ diameter bullets […]

Barrel length

308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun?

February 1, 2016 Bill Marr 0

I woke up early that morning.  It was only a few days after a historic blizzard passed through my state.  Stir crazy, I couldn’t wait to get outside.  The chill from my snow covered feet […]

Barrel length

308 Winchester Barrel Length and Velocity: Winchester 147 grain FMJ

January 24, 2015 Bill Marr 0

Introduction I cut back a 28″ barrel 308 Winchester one inch at a time, to 16.5″, and recorded velocity data for four different cartridges.  The data was summarized in 308 Winchester / 7.62x51mm NATO: Barrel Length […]

Barrel length

7.62x51mm NATO (308 Win) Barrel Length and Velocity: IMI Samson 150 grain FMJ

January 24, 2015 Bill Marr 0

Introduction I cut back a 28″ barrel 308 Winchester one inch at a time, to 16.5″, and recorded velocity data for four different cartridges.  The data was summarized in 308 Winchester / 7.62x51mm NATO: Barrel Length […]

Barrel length

308 Winchester Barrel Length and Velocity: Federal 168 grain Gold Medal BTHP

January 24, 2015 Bill Marr 0

Introduction I cut back a 28″ barrel 308 Winchester one inch at a time, to 16.5″, and recorded velocity data for four different cartridges.  The data was summarized in 308 Winchester / 7.62x51mm NATO: Barrel Length […]

Barrel length

308 Winchester Barrel Length and Velocity: Winchester Super X 180 grain Power-Point

January 24, 2015 Bill Marr 0

Introduction I cut back a 28″ barrel 308 Winchester one inch at a time, to 16.5″, and recorded velocity data for four different cartridges.  The data was summarized in 308 Winchester / 7.62x51mm NATO: Barrel Length […]

Barrel length

308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28″ to 16.5″)

December 27, 2014 Bill Marr 0

308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28″ to 16.5″) Introduction Released by Winchester in 1952 (and adopted by NATO in 1954 as the 7.62x51mm NATO), the 308 Winchester has gained universal acceptance amongst […]

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Custom 1911 Project: Part 6- flat top and chain link top of slide

1911 gunsmithing
September 19, 2016 0

300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16″ 300 Win Mag?

Barrel length
December 25, 2013 0

Armalite AR-30 muzzle brake installation

Gunsmithing
June 9, 2019 0

Custom Left-Hand Remington 700 in 308 Winchester Precision Rifle

Precision Rifles
August 3, 2015 0

Advice for the amateur gunsmith

Gunsmithing
August 16, 2013 0
Review: Shooting the MAGPUL Ruger 10/22 Hunter X-22 Stock
308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28" to 16.5")
6.5 Creedmoor- Effect of Barrel Length on Velocity: Cutting up a Creedmoor!
223 Remington/ 5.56mm NATO barrel length and velocity: 26 inches to 6 inches
Budget precision rifle: Customizing the Savage Axis
Howa 1500 Review
Review: Remington 700 SPS Varmint
7.62x39 mm Russian: Effect of barrel length on muzzle velocity
Howa 1500 barreled action review: Howa 1500 versus Remington 700
243 Winchester- Effect of barrel length on velocity

Badger Ordnance M16-Style Extractor Installation on a Remington 700

6.5 X 47 Lapua Range Report

Aimpoint Micro T-2 Review

AR15 Upper Receiver Build


 

 

 

 

 

Metallic Cartridge Case Preperation Made Easy: Sinclair Power Center Review

December 6, 2013 0

Review: Grayboe Renegade stock

July 27, 2017 0

Rifleshooter.com’s Shotgun Buckshot Standards

July 16, 2011 1

Installing Venom’s Antidote muzzle brake & tactical gas block on an AK (Kalashnikov) barrel- cut, crown and thread an AK barrel

May 27, 2013 0

Building a custom Howa 1500 in 6.5 Creedmoor

November 1, 2017 0

Tactical Operations bolt knob installation on a Remington 700

March 14, 2017 0

What is a gunsmith?

February 4, 2018 0

Making a custom screw: Savage Model 99 fore-end repair

May 12, 2019 0

Building a custom sawed-off shotgun

November 22, 2020 0

Smith and Wesson K-Frame revolver barrel removal and installation

November 24, 2019 0

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  • 782 Custom Gunworks “HUNDO” Loading Block
  • How do rifle suppressors affect muzzle velocity?
  • The A-Team Mini-14? Customizing a Ruger Mini-14
  • Removing stripped and sheared screws from a rifle
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