November 16th, 2013

Kirby Allen Rolls Out 300 Raptor — Big Case, Big Performance

300 Raptor Allen PrecisionKirby Allen of Allen Precision Shooting,, has developed a .30-caliber jumbo-sized magnum he calls the 300 Raptor. The 300 Raptor (center in photo) is based on Allen’s 338 Excalibur parent case (far right in photo), necked down to 30 cal with shoulder moved forward to increase case capacity. Allen states: “This is the largest capacity and performance .30 caliber magnum on the market that can be used in a conventional sized receiver.”

Shoot 200s at 3600 fps
Performance of Allen’s new 300 Raptor is impressive. Allen claims that “200gr Accubonds can be driven to nearly 3600 fps, 230gr Berger Hybrids to 3350 fps, and the 240gr SMK to right at 3300 fps. These loads offered case life in excess of 6-7 firings per case and many of my test cases have over 8 firings on each case so they are not an overly hot load showing the potential of this big .30 caliber.”

300 Raptor Allen Precision

To showcase the new cartridge, Allen built up a prototype rifle with a McMillan A5 stock, Raptor LRSS Action with extended tenon, and a Jewell trigger. The first 300 Raptor Rifle is currently on its second barrel, a new 30″, 3-groove 1:9″-twist Lilja in a custom APS “Raptor Contour”. This distinctive dual-fluted contour runs full-diameter almost to the end of the stock, and then steps down and tapers to the muzzle, where a beefy Medium 3-port ‘Painkiller’ Allen Precision brake is fitted.

300 Raptor Allen Precision

Story tip by EdLongrange. We welcome reader submissions.

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