June 15, 2025
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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

Building a custom Savage Model 10 in 6.5 Creedmoor

March 21, 2016 Bill Marr 0

Savage Arms manufactures accurate rifles.  My Savage Model 10 FCP-SR wasn’t the best out of the box, changing the factory stock for a MDT LSS chassis system made the gun shoot significantly better.   Always […]

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 […]

Precision Rifles

308 Winchester 175 Sierra MatchKing Ladder Test with Varget and IMR 4064

February 6, 2015 Bill Marr 0

I often utilize traditional methods to develop hand loads for my rifles.  Normally, I’ll load five rounds of a given charge in .3 grain increments for a given powder (some shooters load 3, or 6, for […]

Cartridge Selection

6.5 Grendel Review: 18″ Special Purpose Rifle

February 1, 2015 Bill Marr 0

The 6.5 Grendel was created as a 200-800 yard cartridge to fit into a standard AR-15 magazine.  Based on the 220 Russian cartridge (the parent case utilized for the 7.62x39mm, 5.45x39mm and the 6PPC), the 6.5 […]

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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3-Gun Rifle Build

Competition
November 24, 2012 0

USMC M40A5 Build- Part 1: Gathering the Parts

Gunsmithing
February 16, 2015 0

6X47 Lapua (6-6.5×47 Lapua) Review

Cartridge Selection
November 28, 2014 0

My bolt won’t close! Troubleshooting seized ejectors

Gunsmithing
November 24, 2019 0

The .300 WSM – – The End of History?

Bullet Selection
July 2, 2011 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!
223 Remington/ 5.56mm NATO barrel length and velocity: 26 inches to 6 inches
300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16" 300 Win Mag?
223 Ackley Improved (223AI) loads and review: A better 223?
6 Creedmoor barrel length versus muzzle velocity (31 to 17 inches)
6.5 Creedmoor- Effects of Barrel Length on Velocity 2019
Building a 9mm Bolt Action Rifle
M24 Sniper Rifle Review
308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun?

Ruger Precision Rifle Suppressed Load Development: Hornady 147 ELD-Match and H4350 with THUNDER CHICKEN

5 Great gift ideas for shooters and reloaders!

Removing stripped and sheared screws from a rifle

Custom 1911 Project: Part 1- getting started


 

 

 

 

 

Mossberg Patriot Review

April 11, 2017 0

Cerakote Zombie Green (H168) AR-15

November 24, 2015 0

Custom 1911 Project: Part 3- fit and blend grip safety

September 6, 2016 0

Reduced 308 Winchester loads with TRAIL BOSS!

September 24, 2017 0

Harris Swivel Bipod Locks: KMW POD-LOC and EAB S-LEVER

January 7, 2015 0

Tactical Shotgun Build: Back Boring a Barrel and Lengthening a Forcing Cone to Increase Performance

July 4, 2012 0

Hunting Rifle Rebuild: Customizing a Remington Model Seven Hunting Rifle

October 19, 2015 0

Building a Custom Bolt Action .223 Rifle with a Blackheart International Action

July 2, 2013 0

How to flute a rifle barrel

February 3, 2014 0

Fixing a Custom 260 Remington Bolt Action Rifle

November 26, 2014 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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