Reloading

August 25, 2026

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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 […]

Ammunition concentricity and accuracy: Testing the effect of run-out on precision

February 8, 2016 Bill Marr 0

What is cartridge concentricity? Cartridge concentricity is how straight a cartridge is along it’s center axis. The straighter the round, the lower the concentricity. Ammunition concentricity is measured using a method called Total Indicator Runout (T.I.R.)- sometimes […]

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 […]

Lapua 6.5 Creedmoor Brass: Forming 6.5 Creedmoor cases from 22-250 brass

November 2, 2015 Bill Marr 0

Use of the 260 Remington in shooting competitions helped introduce a generation of US rifle competitors to 6.5mm cartridges. While long appreciated in Europe, the 6.5mm has developed a strong following on this side of the Atlantic. […]

6.5 Creedmoor load development: 142 grain Sierra MatchKing with Reloader 17 and W760

October 5, 2015 Bill Marr 0

6.5 Creedmoor load development: 142 grain Sierra MatchKing with Reloader 17 and W760 The Sierra 142 grain MatchKing is a popular bullet for 6,5mm shooters. According to Sierra, the 142 grain SMK has a sectional […]

How to remove a stuck case from a sizing die

September 21, 2015 Bill Marr 0

There are two types of reloaders, those who’ve had a case stuck in a die, and those who haven’t yet. While the pistol reloaders may not experience it as much as the rifle guys, invariably, […]

6.5 Creedmoor reloading: Effects of cartridge overall length (OAL) on 142 gr Sierra MatchKing

September 7, 2015 Bill Marr 0

I’ve had great luck with the 142 grain Sierra MatchKing (SMK) in my custom rifle chambered in 6.5 Creedmoor. A few posts I’ve read on various forums reported exceptional accuracy with short cartridge lengths placing […]

6.5 Creedmoor 123 Sierra MatchKing (SMK) HPBT load development with H4350 and Varget

August 25, 2015 Bill Marr 0

I worked up some loads for my custom 22″ barrel 6.5 Creedmoor precision rifle using Sierra’s 123 Grain MatchKing (SMK) HPBT with Hodgdon Varget and H4350 powder. According to Sierra, the 123 grain SMK has a […]

6.5 Creedmoor 142 Sierra MatchKing (SMK) H4350 Load Development

August 6, 2015 Bill Marr 0

I worked up some loads for my custom 6.5 Creedmoor precision rifle with a 22″ barrel using Sierra’s 142 Grain MatchKing (SMK) HPBT and Hodgdon H4350 powder. According to Sierra, the 142 grain […]

6.5 Creedmoor 136 grain Scenar-L OTM Load Development, H4350

August 1, 2015 Bill Marr 0

I’ve taken a few trips to the range developing a load for my 22″ barrel 6.5 Creedmoor precision rifle. The rifle is built with the following components from Brownells: Surgeon 591 action Bartlein 6.5mm 1:8 […]