November 12, 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 velocity chart

308 barrel length velocity chart

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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USMC M40A5 Build- Part 4: Threading and chambering the barrel and brake installation

Gunsmithing
July 13, 2015 0

Mosin Nagant Bolt Handle Modification

Gunsmithing
June 28, 2020 0

308 Winchester load development: Sierra .308 195 gr. Tipped MatchKing (TMK) and VARGET

Bullet Selection
November 21, 2016 0

Remington 700 upgrades

Editorial
December 26, 2017 0

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

1911 gunsmithing
September 19, 2016 0
Budget precision rifle: Customizing the Savage Axis
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")
223 Remington/ 5.56mm NATO barrel length and velocity: 26 inches to 6 inches
Review: Remington 700 SPS Varmint
300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16" 300 Win Mag?
Ruger American Rifle Predator 223 Review
Howa 1500 barreled action review: Howa 1500 versus Remington 700
6 Creedmoor barrel length versus muzzle velocity (31 to 17 inches)
Remington Model Seven (Model 7) Versus The Model 700

Colorado Shooting Sports AK Lightning Bolt and AK Lightning Lever Review

1911 Rear Sight Installation (Novak style cut)

Custom 1911 Project: Part 4- Machining a chain link front strap

223 Ackley Improved (223AI) loads and review: A better 223?


 

 

 

 

 

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

May 23, 2016 0

Completing an 80% 10/22 Select Fire LLC RAZOR Semiautomatic Receiver

July 1, 2013 0

Cut and crown a pistol barrel

February 6, 2019 0

AR-10/ 308 AR Barrel nut removal

September 2, 2018 0

Cerakote Firearm Refinishing

November 3, 2012 0

Beretta M1951 mystery- cutting our way to the truth

December 4, 2020 0

How to bobtail a 1911

December 11, 2017 0

Removing a fixed choke from a shotgun barrel and installing a choke tube system

February 19, 2014 0

Worst case scenario: pin and screw removal-EDM machining in gunsmithing

October 2, 2018 0

Installing a LimbSaver grind-to-fit recoil pad

December 9, 2018 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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