April 11th, 2012

Spotlight: Ron Boyd’s Light Gun and Henry Pasquet’s Heavy Gun

After we ran our Bulletin news item about Ron Boyd’s amazing 1.462″ 5-shot group at 1000 yards, many readers wanted to see some close-up photos of Ron’s rig. Thanks to Robert Ross of the MidWest Benchrest Club, we have some photos of Ron with his ultra-accurate 6mm Dasher 17-lb Light Gun. This rifle features a BAT SV action, Precision Rifle & Tool (PR&T) “Hammerhead stock” with 5″-wide front wings, Nightforce 12-42 Benchrest scope, and Jewell trigger. Ron had just added a 30″ 1:8″-twist Bartlein barrel to the gun before shooting the 1.462″ group. That barrel only had about 40 rounds through it when it produced the near-record group. The barrel in photos below was a 28″ Benchmark, recently replaced with the new Bartlein. Ron’s ultra-accurate 6 Dasher load consists of surplus Long Range Match powder, with Spencer 103gr bullets. Ron also anneals his Dasher brass after every firing.

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Ron boyd 1.462 at 1000 yards

Henry Pasquet’s .284 Win Heavy Gun
At the same Midwest Benchrest Club IBS match where Ron shot his small five-shot group, Henry Pasquet drilled a very impressive 3.348″ ten-shot group. This group was just .304″ off the IBS 10-shot Heavy Gun record of 3.044″ shot by Joel Pendergraft in 2009. We are told that Henry was running a straight .284 Winchester. You can see in the inset photos below that Henry uses a tuner on his barrel. He also has fitted an extra-wide front sled and a machined rear “keel” to reduce torque and improve tracking. Henry can adjust windage and elevation with BOTH his Fulghum front rest (from Randolph Machine) and his adjustable rear rest.

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Henry Pasquet 1000 yards

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April 7th, 2012

Ron Boyd Shoots 1.462" 5-Shot Group at 1000 Yards

Ron Boyd 1000 yards groupThis past weekend, Forum member Ron Boyd shot a 1.462″ five-shot Light Gun group at 1000 yards in an IBS benchrest match at the MidWest Benchrest Club in Yukon, Missouri. Ron shot a 6mm Dasher with Bartlein barrel and PR&T stock. Ron’s 1.462″ group is 0.065″ off the existing IBS 1000-yard Light Gun record. Ron’s group also happens to be .011″ smaller than the current NBRSA 1K Light Gun record, 1.473″ shot by Bill Schrader in 2002. (But this is not counted by the NBRSA since Ron shot in an IBS match.) Ron’s group was shot in the first relay of the day, in good conditions. The group had three (3) shots clustered in under one-third inch (0.03 MOA)!

Ron Boyd 1000 yards groupThis is truly a spectacular achievement. We think this has to been one of the smallest five-shot groups ever shot at 1000 yards, and probably the smallest ever with a 6mm cartridge. At 1000 yards, 1 MOA is 10.47″. This means that Ron’s group measured in at 0.1396 MOA! To give you an idea of how small Ron’s group really was, at left is a 1.462″ circle shown at 100% scale, along with a quarter at 100% scale.* The circle represents the center-to-center distance of Ron’s five shots at 1000 yards. Total vertical dispersion was just under 1.2″ for five shots. The vertical for the top four shots (measured with OnTarget software) was just 0.398″! Shown below is a flat-bed scan of the actual target. Notice the tight cluster of 3 shots touching. That’s a dime in the photo added for scale.

Ron Boyd’s 6mm Dasher Load
Ron Boyd 1000 yard groupRon loaded a stout charge of Long Range Match surplus powder with Spencer 103gr bullets seated about .010″ OFF the lands. The bullets were “right out of the box”, NOT pointed. This powder has burn-rate characteristics very similar to Alliant Reloder 15, and Ron used his regular RL15 charge, adjusted by half a grain or so. Ron was using no-neck-turn “brown-box” Lapua 6BR brass formed into the 40° improved 6mm Dasher case. The unturned, loaded case necks measure about 0.2695″, yielding .0015″ total clearance in a 0.271″ chamber. The brass used for the 1.462″ group had seven previous firings. Ron anneals his brass after every firing using a Benchsource annealing machine. Ron told us: “The Benchsource is the greatest annealing machine there is, as far as I’m concerned.” Ron ultrasonically cleans his brass and then tumbles his brass after the ultrasound process. He does NOT use an internal neck lubricant. He does NOT uniform his primer pockets and he does NOT ream his flashholes. Ron believes this load was running “right around 3000 fps”, but he has not chron’d it yet using the new Bartlein barrel.

Ron Boyd’s 6mm Dasher Light Gun
Ron’s 17-lb Light Gun featured a BAT SV Action, Bartlein 30″ 1:8″ twist, 0.237″ land barrel, and Precision Rifle & Tool “Hammerhead” benchrest stock with 5″-wide wings in front. This stock weighs 4 lbs 1 oz. with an aluminum butt plate and is about 36.5″ long with integrated rails on the bottom of the “wings”. Ron’s friends Rich Griffin and Jerry Kloeppel did the chambering and bedding. Ron recently put the Bartlein barrel on the gun. Ron estimates that the barrel had only 40 rounds through it when it produced the 1.462″ group. Ron tells us: “This new barrel is great, and the 5″ PR&T stock really works. I luckily pulled the trigger at the right time.” Ron told us that this rifle shot in the high ones/low twos at 100 yards during testing.

PR&T Hammerhead Stock (catalog photo)
Precision Rifle and Tool hammerhead rifle stock

*The circle and quarter should appear “true size” when viewed at the most common monitor resolution. If you are running a higher resolution on your monitor, the illustration will appear small than actual size.
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