April 24, 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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6.5 Creedmoor load development: Sierra 130 grain Tipped MatchKing (TMK) with H4350, Varget, Reloder 15 and Reloader 17

6.5 Creedmoor
May 23, 2016 0

Modular Driven Technologies TAC21 Chassis System Review (Initial Thoughts)

Precision Rifles
September 30, 2011 0

Mossberg 500 rebuild

Gunsmithing
August 12, 2015 0

Reduced 308 Winchester loads with TRAIL BOSS!

Reloading
September 24, 2017 0

TS Customs Quick Adjust Knob for KMW Loggerhead Cheekpiece

Accessories
September 2, 2017 0
223 Remington/ 5.56mm NATO barrel length and velocity: 26 inches to 6 inches
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!
300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16" 300 Win Mag?
Review: Mossberg MVP Patrol 5.56mm NATO (223 Remington) and 7.62 NATO (308 Winchester)
Building a Custom Ruger American Rifle
Ruger American Rifle Predator 223 Review
Budget precision rifle: Customizing the Savage Axis
Review: Howa MINIACTION 7.62x39
M24 Sniper Rifle Review

Building a 300 Winchester Magnum Precision Rifle

Review: Nightforce Competition 15-55×52

TAC21 Review: 3.5 Years Later

Reloading 101: Measuring group size and converting to MOA


 

 

 

 

 

Quick rifle bedding tip: Easy removal of bedding material from pillars

July 19, 2015 0

Starline 6.5 Creedmoor SMALL RIFLE PRIMER Brass Endurance Testing- firing the same cases 12 times

August 12, 2018 0

Windham Weaponry Carbine Review – The Inspiring New “Old” AR

June 9, 2012 0

6.5 Creedmoor 123 Sierra MatchKing (SMK) HPBT load development with H4350 and Varget

August 25, 2015 0

Remington 870 3-Gun Competition Shotgun Conversion

July 29, 2012 0

Building a Custom Remington 700 .308 Tactical Rifle

June 28, 2013 0

Removing a stuck Remington 700 barrel

February 28, 2021 0

Winchester 70, 30-06 Retro Build

July 4, 2018 0

Back bore a shotgun

August 5, 2015 0

Troubleshooting a .308 rifle

October 12, 2014 0

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  • How do rifle suppressors affect muzzle velocity?
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  • Removing stripped and sheared screws from a rifle
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