May 14, 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
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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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Refreshing a poorly machined Remington 700 action

Gunsmithing
July 19, 2014 0

Kaboom!!! 300 BLK in 5.56/223 AR-15!

Editorial
June 2, 2019 0

MDT LSS-XL GEN2 review

Precision Rifles
February 10, 2019 0

NRL22- Precision Rimfire Competitions

Competition
May 20, 2018 0

Smith and Wesson Revolver front sight insert replacement

Gunsmithing
February 19, 2019 0
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 Review
223 Remington/ 5.56mm NATO barrel length and velocity: 26 inches to 6 inches
Review: Mossberg MVP Patrol 5.56mm NATO (223 Remington) and 7.62 NATO (308 Winchester)
Budget precision rifle: Customizing the Savage Axis
Colt M45A1 Review: USMC Pistol Review
Howa 1500 barreled action review: Howa 1500 versus Remington 700
Ruger American Rifle Predator 223 Review
M24 Sniper Rifle Review

HK VP9 FAILURE at 93 rounds

Review: Shooting the MAGPUL Ruger 10/22 Hunter X-22 Stock

Schmidt and Bender 5-45×56 PM II High Power Review

Ultimatum Precision redesigned bolt for the U300: reduced bolt lift


 

 

 

 

 

Shortening a shotgun stock and fitting a recoil pad

February 1, 2014 0

MDT ESS Carbon Fiber Forend

April 2, 2018 0

How to bed a rifle scope base

January 17, 2014 0

Remington 700 sheared screw removal

December 1, 2019 0

Chambering a Rifle Barrel

March 6, 2013 0

Removing a stuck pull-through cleaning kit

February 28, 2021 0

Remington 870 rebuild- from hunting ducks to home defense

May 5, 2014 0

Remington 870 magazine dimple removal

July 24, 2017 0

Ruger 10/22 accuracy upgrade: Shortening factory chamber to improve accuracy

November 30, 2015 0

Building a custom Howa 1500 in 6.5 Creedmoor

November 1, 2017 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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