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
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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6.5 Creedmoor loads: 123 SMK and 130 TMK with VARGET

6.5 Creedmoor
August 20, 2017 0

Another 300 BLK in 5.56 Barrel KABOOM!

Editorial
August 5, 2019 0

Review: Ruger’s 10/22 Optic Ready Carbine

Reviews
November 17, 2019 0

300 Winchester Magnum load development: Sierra .308 195 gr. Tipped MatchKing (TMK) REVIEW

Cartridge Selection
November 15, 2016 0

Meet BOOMER! My 17″ 338 Lapua Magnum

Precision Rifles
March 27, 2017 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

DeWalt DW3970 Hacksaw: A great gunsmith’s hacksaw

Gunsmithing basics: Tapping a blind hole

Quick rifle bedding tip: Easy removal of bedding material from pillars

Vais Muzzle Brake Installation


 

 

 

 

 

Remington 870 3-Gun Competition Shotgun Conversion

July 29, 2012 0

Machining front cocking serrations on a Glock slide

July 29, 2015 0

Eliminate milling machine backlash: Splitting a Bridgeport feed screw nut

March 7, 2015 0

Muzzle brake shock waves in the sand

July 31, 2014 0

Remington 700 SPS 243 Win to 6 Creedmoor conversion: Budget precision rifle

August 22, 2016 0

Gunsmithing basics: Tapping a blind hole

June 24, 2018 0

Cut and crown a shotgun barrel

April 30, 2020 0

How to flute a rifle barrel

February 3, 2014 0

Improved belt sander table (tooling plate)

March 22, 2019 0

Mossberg 500 rebuild

August 12, 2015 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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