August 10, 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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Chambering a rifle barrel between centers

Gunsmithing
September 28, 2014 0

338 Lapua Magnum: Barrel Length Versus Muzzle Velocity (30-17 inches)

Barrel length
March 5, 2017 0

AR15/M16 Bolt Radius Scraper Review

Accessories
November 2, 2012 0

Understanding shotgun back bore

Gunsmithing
July 24, 2015 0

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

Optics
May 21, 2017 0
223 Remington/ 5.56mm NATO barrel length and velocity: 26 inches to 6 inches
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")
Budget precision rifle: Customizing the Savage Axis
Sig Sauer MPX Review
16.5 Inch 308 Winchester Precision Rifle: Summary of a Short Rifle
Review: Remington 700 SPS Varmint
Ruger American Rifle Predator 223 Review
Building a Custom Ruger American Rifle
Review: Mossberg MVP Patrol 5.56mm NATO (223 Remington) and 7.62 NATO (308 Winchester)

Aimpoint Micro T-2 Review

Short Barrel 338 Lapua Magnum Load Development Results

Remington 700 8-40 scope base conversion

Howa GRS Berserk 6.5 Creedmoor Review


 

 

 

 

 

Do rifle crowns matter? Does a crown affect accuracy? I find out with the help of my grinder…

March 7, 2018 0

NRL22- Precision Rimfire Competitions

May 20, 2018 0

DeWalt DW3970 Hacksaw: A great gunsmith’s hacksaw

September 22, 2012 0

340 Weatherby Magnum

December 3, 2017 0

Customizing a Savage B.Mag Target Rifle

February 7, 2022 0

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

Badger Ordnance M16-Style Extractor Installation on a Remington 700

April 3, 2015 0

Porting a shotgun barrel with a milling machine

January 21, 2014 0

AR-180 Magazines: Modifying AR-15/M16 M4 magazines to fit an AR-180

July 21, 2019 0

Howa 1500 barrel removal

November 13, 2017 0

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