August 13, 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
Homeoptimum 308 barrel length

optimum 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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308 Winchester Load Development: 175-grain Sierra Matchking and Varget

Precision Rifles
December 13, 2014 0

Remington 870 Flexitab system and parts identification

Gunsmithing
March 15, 2015 0

Rebarreling a Winchester Model 70

Gunsmithing
February 15, 2016 0

Building a custom 7mm Rem Mag Hunting Rifle-PART 2

Gunsmithing
July 31, 2022 0

Remington Model 4, 742, 7400 disassembly notes

Gunsmithing
December 15, 2019 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!
Howa 1500 barreled action review: Howa 1500 versus Remington 700
Budget precision rifle: Customizing the Savage Axis
M24 Sniper Rifle Review
Sig Sauer MPX Review
USMC M40A5 Build- Part 1: Gathering the Parts
Armscor M22 TCM BA Rifle Review
7.62x39 mm Russian: Effect of barrel length on muzzle velocity

6.5 Grendel loads in a Howa MINIACTION (6.5 Grendel load development)

Badger Ordnance M16-Style Extractor Installation on a Remington 700

Reduced 308 Winchester loads with TRAIL BOSS!

Eliminate milling machine backlash: Splitting a Bridgeport feed screw nut


 

 

 

 

 

Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions

September 30, 2022 0

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

November 28, 2016 0

Blueprinting a Remington 700 Action

February 18, 2013 0

Forster CO-AX reloading press: REVIEW- Is it the best press for precision rifle?

March 12, 2017 0

Badger Ordnance M16-Style Extractor Installation on a Remington 700

April 3, 2015 0

Porting a shotgun barrel with a drill

January 17, 2014 0

USMC M40A5 Build- Part 5: Bedding and final assembly

December 16, 2015 0

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

February 19, 2014 0

Chambering a Rifle Barrel

March 6, 2013 0

Custom Tikka T3 6.5 PRC build

June 10, 2018 0

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Recent Posts
  • 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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