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

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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Removing a stuck pull-through cleaning kit

Gunsmithing
February 28, 2021 0

Custom Remington 870 Wingmaster Build

Gunsmithing
May 5, 2015 0

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

Barrel length
March 5, 2017 0

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

Bullet Selection
November 21, 2016 0
No Picture

Sure Site Target Hangers

Competition
July 21, 2012 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)

Creedmoor Ammunition Review: 308 Winchester 175 Grain Scenar

USMC M40A5 Build- Part 5: Bedding and final assembly

6.5 Creedmoor load development: 16.5 inch barrel, 123 SMK and 140 SMK

7mm Remington Magnum (7 Rem Mag) Barrel Length Versus Velocity


 

 

 

 

 

MagnetoSpeed V3 versus Oehler 35P: Chronograph comparison and review

November 23, 2015 0

My MagnetoSpeed V3 BROKE!!!

November 11, 2017 0

MDT ESS Carbon Fiber Forend

April 2, 2018 0

223 Remington Load Development: 52, 55, 69 HPBT, Varget and the Ruger American Rifle

January 9, 2019 0

Defensive Shotgun Patterning: Deconstructing the one inch per yard myth

January 27, 2013 0

Surgeon 591 Action

February 15, 2015 0

Chambering a rifle for an Ackley Improved Cartridge

January 22, 2014 0

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

July 19, 2015 0

Glock firing pin channel removal and replacement

September 1, 2015 0

Daewoo K2, DR-200/DR-300 barrel removal

March 23, 2019 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
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