April 24, 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
Homeload development

load development

6.5 Creedmoor

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

March 18, 2018 Bill Marr 0

Most 6.5 Creedmoor shooters prefer heavier bullets.  I happen to be one of them.  While my favorite bullet for the Creedmoor is the 142 Sierra MatchKing (SMK), it’s slightly lighter, and easier to stabilize little […]

6 Creedmoor

Sierra 6mm 110 SMK, 6 Creedmoor and 6×47 Lapua: initial impressions/load development

December 18, 2016 Bill Marr 0

Game changer?  Sierra’s new 6mm 110 grain MatchKing #1575 When Sierra Bullets introduced the new 6mm (.243″) 110 grain MatchKing (SMK) a few weeks ago the 6mm shooting community was excited.  With an advertised G1 […]

Bullet Selection

308 Winchester load development: Sierra 168 gr. MatchKing with IMR 4064 and VARGET

December 6, 2016 Bill Marr 0

In the days before the 175 gr. Sierra MatchKing (SMK), the 168 SMK ruled supreme in the 308 Winchester.  Back then it was  sometimes referred to as a “heavy match” bullet since it was a […]

Bullet Selection

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

November 21, 2016 Bill Marr 0

Sierra .308 195 gr. Tipped MatchKing (TMK) load development: 308 Winchester and VARGET In Sierra .308 195 gr. Tipped MatchKing (TMK) REVIEW and load development: 308 Winchester and IMR 4064, we had a first look at […]

Competition

308 Winchester load development: Sierra .308 195 gr. Tipped MatchKing (TMK) REVIEW with IMR 4064

November 14, 2016 Bill Marr 0

Sierra 195 gr. Tipped MatchKing (TMK) REVIEW and load development: 308 Winchester and IMR 4064 Sierra recently expanded the Tipped MatchKing (TMK) line with the introduction of a 195 grain .308 diameter bullet #7795.   […]

300 BLK

300 BLK load development: 125, 135, 175 and 220 SMK with H110 and IMR 4227

June 1, 2016 Bill Marr 0

The 300 AAC Blackout (300 BLK) is a popular alternative cartridge in the AR-15/M16 M4 (AR) community.  Known for its ability to deliver heavy subsonic bullets for standard AR magazines while cycling the action in suppressed applications, […]

6.5 Creedmoor

6.5 Creedmoor load development: Sierra 130 grain Tipped MatchKing (TMK) with H4350, Varget, Reloder 15 and Reloader 17

May 23, 2016 Bill Marr 0

Sierra’s 6.5 mm (.264″) 123 and 142 grain MatchKings (SMK) are staples of the precision shooting world.  Both offer exceptional precision to the marksman, but a middle weight 6.5mm option eluded those of us who […]

Reviews

Savage Axis HB Review: Sub MOA for sub $300?

April 4, 2016 Bill Marr 0

The Savage Axis (originally branded the Savage Edge) is a budget rifle with a strong following.  While it is has similarities to the Savage Model 10/110, features of the Axis are geared toward selling the rifle for […]

6.5 Creedmoor

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

March 28, 2016 Bill Marr 0

6.5 Creedmoor 16.5″ barrel load development for the 123 grain Sierra MatchKing (SMK) and 140 grain Sierra MatchKing (SMK) When I rebuilt my Savage 10 FCP-SR into a custom 6.5 Creedmoor, I settled on a […]

Precision Rifles

308 Winchester 175 Sierra MatchKing and IMR 4064 load development

January 11, 2016 Bill Marr 0

308 Winchester load development with the Sierra 175 grain MatchKing (SMK) and IMR 4064 Powder. In this post, I’ll be developing a load for my M40A3 clone.  Built on a customized Remington 700 receiver, the […]

Posts pagination

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Worst case scenario: pin and screw removal-EDM machining in gunsmithing

Gunsmithing
October 2, 2018 0

Cerakote’s big fail? USMC returns M45A1 Close Quarters Battle Pistols to Colt

Pistols
April 27, 2017 0

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

6.5 Creedmoor
March 28, 2016 0

Revic Optics PMR 428 Smart Rifle Scope Review

Optics
November 25, 2017 0

TAC21 Review (TAC21/TAC21LA)

New
August 2, 2012 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!
300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16" 300 Win Mag?
Review: Mossberg MVP Patrol 5.56mm NATO (223 Remington) and 7.62 NATO (308 Winchester)
Ruger American Rifle Predator 223 Review
Building a Custom Ruger American Rifle
Budget precision rifle: Customizing the Savage Axis
Review: Howa MINIACTION 7.62x39
Review: Remington 700 SPS Varmint

Bipod rail installation (Atlas bipod adapter)

McMillan launches new line of less expensive stocks: Grayboe

Shotgun duckbill with 41 pellet number 4 buckshot

Nesika Bay Model K action


 

 

 

 

 

Chambering a rifle barrel between centers

September 28, 2014 0

Building a 300 Winchester Magnum Precision Rifle

September 18, 2014 0

VTAC L.U.S.A. Universal Sling Adapter Review

September 12, 2011 0

Tactical Operations bolt knob installation on a Remington 700

March 14, 2017 0

Customizing the 1911: machining a golf ball front strap

October 11, 2016 0

Removing pinned and welded muzzle devices

December 1, 2019 0

Sheared screw removal (drill and back out method)

November 17, 2018 0

Building a Custom 308 Precision Chassis Rifle- PART 1, Barrel removal, action blueprinting

January 23, 2022 0

Building a Remington 700 in 7.62×39 mm Russian

March 14, 2016 0

Special Purpose Rifle (SPR) Upper Receiver Build

August 22, 2012 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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