June 23, 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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Nightforce

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 […]

6 Creedmoor

Ultimatum Precision U300 bolt action review: Initial impressions

December 3, 2016 Bill Marr 0

I first heard of the U300 back in February when Ultimatum Precision approached me about reviewing their new, three-lug action.  Looking at the CAD drawing they provided, I was impressed and couldn’t wait to get my […]

Cartridge Selection

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

November 15, 2016 Bill Marr 0

When I found out Sierra was introducing .308″ diameter 195 grain Tipped MatchKings (TMK) I was thrilled to get my hands on some.  The weight was an interesting choice, heavy for a 308 Winchester (Win) […]

Competition

Budget precision rifle options? Custom rigs for a mid-range budget

October 3, 2016 Bill Marr 0

In the short time since its introduction, the Ruger Precision Rifle (RPR) has become established in the shooting industry.  While there have been precision rifles in similar setups available for years, what made the Ruger […]

Competition

Indoor Optical Training Aid (I.O.T.A.) Review: Dry practice with a scoped rifle

August 25, 2016 Bill Marr 0

In Marine Corps boot camp we spent a week snapping in on a white barrel with small silhouette targets painted on it.  The entire platoon would gather around the barrel in either prone, sitting, kneeling […]

Gunsmithing

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

August 22, 2016 Bill Marr 0

6 Creedmoor precision rifle on a budget? We had great results with our Remington 700 SPS Varmint chambered in 243 Winchester.  Approaching 1/3 MOA accuracy at 500 yards, this modestly priced rifle exceeded expectations.  The only […]

300 BLK

300 BLK accuracy problems? Maybe it isn’t you…

August 17, 2016 Bill Marr 0

The ability to shoot 30 caliber bullets from a standard AR-15 M16/M4 style rifle by simply changing the barrel and ammunition has made the 300 AAC Blackout (300 BLK) a popular choice for AR shooters looking […]

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

16″ 6.5 Creedmoor Precision Rifle: Compact accuracy

May 9, 2016 Bill Marr 0

Over the past two decades in the sport I’ve learned short barrel precision rifles shoot well and look cool.  Most of the short rifles I’ve built were 16″ barrel 308 Winchesters.  Always looking for something […]

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 […]

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Making a cleaning rod rack

shop projects
December 1, 2019 0

Surefire X300 Review

Handguns
September 11, 2011 0

Bedding an HS Precision Stock

Gunsmithing
January 2, 2017 0

Vapor Trail Tactical’s Precision Scoped Rifle-2: A Review

Precision Rifles
March 26, 2014 0

Chambering a rifle for an Ackley Improved Cartridge

Gunsmithing
January 22, 2014 0
Budget precision rifle: Customizing the Savage Axis
Ruger American Rifle Predator 223 Review
Charter Arms Pitbull .45 ACP Review
Howa 1500 barreled action review: Howa 1500 versus Remington 700
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
Howa 1500 Review
USMC M40A5 Build- Part 1: Gathering the Parts
16.5 Inch 308 Winchester Precision Rifle: Summary of a Short Rifle

Colorado Shooting Sports AK Lightning Bolt and AK Lightning Lever Review

6.5 Creedmoor load development: Reloder 17 and 140 gr. Sierra MatchKing (SMK) #1740

6.5 Creedmoor load development: Sierra 107 TMK and Varget

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


 

 

 

 

 

Gunsmithing: replacing a curved steel butt plate with a rubber recoil pad

November 25, 2020 0

300 AAC Blackout Review (300 BLK Review)

September 19, 2012 0

Shotgun duckbill with 41 pellet number 4 buckshot

August 23, 2017 0

Customizing a Savage Model-10 Hunting Rifle

April 27, 2017 0

Kynshot recoil reduction stock for the Remington 870

October 14, 2016 0

Building a Custom Precision Rifle: Deviant 6.5×47 Lapua

July 4, 2014 0

What is a gunsmith?

February 4, 2018 0

Building a Custom Ruger American Rifle

November 12, 2017 0

Custom Remington 700 6.5×47 Lapua Build

April 18, 2015 0

Troubleshooting a .308 rifle

October 12, 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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