June 21, 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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Rogers Super-Stoc Review

Accessories
July 30, 2012 0

Ruger Precision Rifle (RPR) Review (GEN III) 6.5 Creedmoor

Precision Rifles
September 23, 2018 0

Lapping an AR15 Upper Receiver

Rifles
November 23, 2012 0

Daniel Defense M4 Upper Review

Carbine Basics
November 1, 2012 0

Vais Muzzle Brake Installation

Gunsmithing
April 2, 2014 0
6.5 Creedmoor- Effect of Barrel Length on Velocity: Cutting up a Creedmoor!
Budget precision rifle: Customizing the Savage Axis
338 Lapua Magnum: Barrel Length Versus Muzzle Velocity (30-17 inches)
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")
Ruger American Rifle Predator 223 Review
M24 Sniper Rifle Review
Howa 1500 barreled action review: Howa 1500 versus Remington 700
Colt M45A1 Review: USMC Pistol Review
Forster CO-AX reloading press: REVIEW- Is it the best press for precision rifle?

Schmidt & Bender 5-25×56 PM II SFP Review

Sierra .30 Caliber/7.62MM 175 Grain HPBT Tipped MatchKing (TMK) Load Development and Review: 308 Winchester and Varget

Improved belt sander table (tooling plate)

Remington Model Seven Actions are available!


 

 

 

 

 

Jewell trigger installation on Winchester 70/FN Special Police

November 24, 2019 0

Defiance Machine Stryker Ridge HTR action: Custom Remington 700 style reciever

October 4, 2014 0

Reloading 101: Measuring group size and converting to MOA

August 11, 2016 0

6.5 Creedmoor 136 grain Scenar-L OTM Load Development, H4350

August 1, 2015 0

Modular Driven Technologies (MDT) HS3 Chassis Review: Initial Thoughts

January 24, 2015 0

Custom Cut Down Over and Under Shotgun

July 30, 2020 0

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

February 16, 2022 0

How to flute a rifle barrel

February 3, 2014 0

Lengthening a shotgun’s forcing cone

February 3, 2013 0

Custom 338 Lapua Magnum Precision Rifle Build

October 1, 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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