April 18, 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

308 barrel length

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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Brownells Gunsmith Conference and Career Fair

Gunsmithing
April 21, 2013 0

223 Remington/ 5.56mm NATO barrel length and velocity: 26 inches to 6 inches

Barrel length
December 7, 2015 0

Brownells/EOTech CQB T-Dot Review

Optics
October 21, 2012 0

MRAD or MOA scopes? Target size matters.

Optics
May 1, 2017 0

Shotgun Duckbill Review: Paradigm’s GATOR

Reviews
July 9, 2017 0
6.5 Creedmoor- Effect of Barrel Length on Velocity: Cutting up a Creedmoor!
308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28" to 16.5")
300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16" 300 Win Mag?
223 Ackley Improved (223AI) loads and review: A better 223?
308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun?
Review: Mossberg MVP Patrol 5.56mm NATO (223 Remington) and 7.62 NATO (308 Winchester)
Howa 1500 barreled action review: Howa 1500 versus Remington 700
223 Remington/ 5.56mm NATO barrel length and velocity: 26 inches to 6 inches
Ruger American Rifle Predator 223 Review
Budget precision rifle: Customizing the Savage Axis

60 years too early? Winchester’s fiber wrapped Win-Lite shotgun barrels

Grizzly 4003G Gunsmith’s lathe chuck issue resolved

Bushmaster ACR Review

Reloading the 7.62×39 mm Russian: Load development with 125 and 150 gr. bullets


 

 

 

 

 

Super Short Precision Rifles: Is there such thing as a 16.5″ .308 Tactical Bolt Action Rifle?

November 15, 2013 0

USMC Combat Pistol Program history and development

April 13, 2017 0

Repairing a split shotgun stock

February 24, 2019 0

Building a custom 6.5 Creedmoor bolt action pistol

June 13, 2016 0

Gunsmithing: replacing a curved steel butt plate with a rubber recoil pad

November 25, 2020 0

Building (machining) an AR-15/M16 M4 barrel from a blank

May 13, 2014 0

Installing a LimbSaver grind-to-fit recoil pad

December 9, 2018 0

Winchester 70, 30-06 Retro Build

July 4, 2018 0

Building a Custom 308 Precision Chassis Rifle – PART 2- Barrel preparation and threading

February 16, 2022 0

Turnbull Restoration and Manufacturing on “How it’s Made”

March 6, 2015 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
  • Cut and Crown a Winchester 94 30-30
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