October 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
HomeProof Research

Proof Research

6.5 Creedmoor

6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance

August 21, 2017 Bill Marr 0

6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance 6.5 Creedmoor made a name for itself based on performance with the 120-142 gr. class bullets.  Unlike older cartridges such as the 308 […]

Cartridge Selection

6.5 Creedmoor loads: 142 gr. and 140 gr. SMK with H4350

August 6, 2017 Bill Marr 0

6.5 Creedmoor loads: 142 gr. and 140 gr. SMK with H4350 I hate to say it, but I guess I drank the 6.5 Creedmoor Kool-Aide.  I’ve posted quite a bit of load development for the […]

Competition

A look at how rifle barrels speed up: Measuring the increase of muzzle velocity in new barrels

July 31, 2017 Bill Marr 0

A look at how rifle barrels speed up: Measuring the increase of muzzle velocity in new barrels Seasoned shooters and barrel makers will often tell you new rifle barrels speed up.  Normally they say something […]

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Installing a Mini Red Dot Mounting Plate on a Smith and Wesson Revolver (586/686)

Gunsmithing
December 15, 2021 0

6.5 Creedmoor load development: Semi-automatic gas gun, 123 and 142 SMK

6.5 Creedmoor
January 15, 2018 0

Shotgun Ghost Ring Sights: Selecting the right sight for you

Reviews
March 9, 2013 0

16.5 Inch 308 Winchester Precision Rifle: Summary of a Short Rifle

Precision Rifles
November 4, 2014 0

Cobray Terminator Shotgun Pictures: One weird shotgun

Shotguns
February 11, 2015 0
6.5 Creedmoor- Effect of Barrel Length on Velocity: Cutting up a Creedmoor!
Building a custom sawed-off shotgun
223 Remington/ 5.56mm NATO barrel length and velocity: 26 inches to 6 inches
Ruger American Rifle Predator 223 Review
Budget precision rifle: Customizing the Savage Axis
308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28" to 16.5")
16.5 Inch 308 Winchester Precision Rifle: Summary of a Short Rifle
Howa 1500 barreled action review: Howa 1500 versus Remington 700
Custom Remington TAC-14 Build
308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun?

Troubleshooting a .308 rifle

The .300 WSM – – The End of History?

IDF Modernized M24 SWS Review

6.5 Creedmoor load development: Semi-automatic gas gun, 140 SMK with VARGET and H4350


 

 

 

 

 

Review: Nightforce Competition 15-55×52

April 19, 2017 0

6.5 Creedmoor loads: 6.5 mm 150 gr. Sierra MatchKing (SMK)

October 14, 2017 0

Shotgun Duckbill Review: Paradigm’s GATOR

July 9, 2017 0

Installing a LimbSaver grind-to-fit recoil pad

December 9, 2018 0

Bipod rail installation (Atlas bipod adapter)

September 28, 2014 0

Custom Remington 700 Build: Our twist on a light tactical rifle

March 11, 2013 0

Cerakote firearms finishing: Quick trick to coat screws

November 14, 2013 0

Custom Mossberg 590 SHOCKWAVE build

August 24, 2017 0

Special Purpose Rifle (SPR) Upper Receiver Build

August 22, 2012 0

Browning Auto-5 Sheared Magazine Tube Removal

October 11, 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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