338 Spectre will launch the 180-grain BT at 1,800 ft./sec., approaching 1,300 ft-lbs. I bought 500 pieces of SBR brass directly from them years ago and a set of Hornady 338 spectre dies (at the time Hornady wouldn’t release them to anyone not OKed by Marty). 35 Remington or even the 180-grain load for the. I bought a barrel directly from Marty at Teppo Jutsu years ago and built a rifle. They both provide a 90% case fill to aid in tight SDs without having to use some novelty powder like Tinstar or Trail Boss. Q Mini-Fix with one of our 16 338 Spectre 1:3 barrels. Ballistic performance is comparable to the.
Now, the 338 Spectre is a 1-6 barrel and the 8.6 is a 1-3. Best of all it runs on the smaller Ar-15 platform. SBR Ammunition makes barrels, loaded ammo and brass. 338 Razorback is the natural evolution using 10mm Auto brass which can be found anywhere. It is called the 338 Spectre and was developed a while ago by Marty ter Weeme of Teppo Jutsu. 338 Spectre uses 10mm Magnum brass which is unavailable right now but formed brass is available for $40 a hundred. A person can buy dies for both right now. 1,050fps is considered the maximum velocity for a Subsonic round. They use large pistol primers which is a welcome change. The 338 Spectre 16in barrel, and the 300 Blackout is based on a 9.0in barrel. Both are done with one pass thru a sizing die. Pretty close to 300BO but pushing the same 338 bullets as the 8.6.Īpparently the difference between these two cartridges is which pistol case is used to form brass. Maker has 300gr REX solids for subsonic expansion. But these tiny little 338 cartridges seem like the way to shoot subsonic 338. Double to 3 times as much as I'm shooting now. Twist rate is too fast for supers, has too much case capacity subs, not enough for supers. I'm pretty convinced the smallest powder charge in a longer barrel is going to be the quietest configuration.Ĩ.6 Blackout seems like a hot mess. It's the quietest centerfire subsonic gun I have. I currently shoot 5.7gr of Hornady Longshot in a 190gr 300BO out of a 16" barrel with a TB 338 Ultra. I'm thinking a 10" - 16" barrel on my SBR'd Origin l. 338 Whisper are mainly limited to subsonic velocities. 1 Unlike the smaller caliber cartridges in the Whisper family, loads for the. 338 Whisper is a wildcat cartridge in the Whisper family, a group of cartridges developed in the early 1990s by J.D.
I only care about subsonic (if you want to talk supers GTFO). Source (s): Cartridges of the World 1 The.
#338 spectre barrels update#
Once I have all in hand, I will get the blanks to Palladin Machine(tp555) and update the post when that happens.Anyone play with these? I'm 98% about to buy a 1:6.5". In addition to ammunition, SBR produces a high quality barrels such as the AR-15 Pistol Barrel chambered in 338 Spectre. I'm waiting on deliveries for the Bolt Assemblies and a few odd parts for my personal builds. Some companies have created AR pattern rifles that depart from the standard AR-15 and AR-10 dimensions in order to accommodate other types of ammunition that would not fit into the those standards.338 Spectre - Uses 10mm Magnum pistol cases with a 6.8 SPC bolt-face. Muzzle threads can be chosen prior to build, will be either 1/2" x 28TPI, or 5/8" x 24TPI (I have multiple thread adapters for my cans, and just like the beefier mount) Throat on all will be set based on a stock SBR 300 Gr 338 Spectre subsonic round. Local purchase can take $25 off of prices for Face-to-Face transaction. 3 Qty Barrels with DPMS barrel extensions and RGUNS 6.8 Bolt Assembly.īarrels with Bolt Assembly will be $325 Delivered TYD ConUSġ QTY DPMS barrel extensions and phosphate BCG (Bolt carrier body stamped "TC," Bolt Assembly stamped "6.8") Photos can be provided.īarrel with Bolt Carrier Group will be $375 Delivered TYD ConUS
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