The rifle is built on a Remington 700 action with a few mods done to it.. It has obviously been trued etc also the ejection port was openned up so that the rifle will eject a unspent round with a 300 gr MK.. The rifle also has a 33" Kreiger Match grade barrel with a Williams Gun Sight & Outfitters muzzle brake,along with a Jewel trigger.. It has a 6.5x20x50 Leupold Mark 4 for optics.. Of course the HS Precision stock is obvious.. The Obryan is nothing new just another name for it.. It is a 300 RUM necked up to 338 with the shoulder angle changed basically Ackley-ized.. The rifle was put together by Rob Canze at Williams Gun Sight Co, Davison Michigan and shoots 300 SMK's under 1/2 inch all day long.. It will push them 2970 FPS... Can keep rounds on 12x12 steel plate effortlessly at 1000 yards best group so far at 1000 is 6 inches +- 1/2...OK, I'll bite. What's the .338 Obryan? How about some specs on the rifle?