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. Be Alert: Publisher cannot be responsible for errors in published load data. Gun: Douglas barrel length: 26' primer: CCI 250 case: WW max length: 2.500' trim length: 2.480' OAL max: 3.290'. 308 Norma Magnum and this loading data is considered suitable for that cartridge. SBR Ammunition makes barrels, loaded ammo and brass. 30-338 is almost an identical twin to the. Not sure why the 225s didn't group, I used to get my best groups from the 180 BT HiV loads, but that group of 250 loads is bragging rights - this little round can be both "up close and personal" as well as "reach a little further", all while being pur't darn quiet. It is called the 338 Spectre and was developed a while ago by Marty ter Weeme of Teppo Jutsu. Steve - Glad to see it found a good home and that you are enjoying it. Please send Email to take care of the final details (shipping address, balance, etc) This thread will take the adapter that was specified at a later date as well as the TROS HK 3 Lug. The barrels ended up as twins, 11.5" SS 0.75" diameter wth 1/2 x 28 thread. Your barrel and Orion's are just about done, I need to touch the throat up with the throat reamer a hair to give you a little more wiggle room. I F/L size each time but with a short pistol case it is not a big deal (unlike 50 BMG ) And I don't trim them for at least 3 reloads. 338 Spectre 4 F 78.25 28 - 4 means: Dimensions from Manufacturers or Designers drawing or from accepted standard such as SAAMI or CIP. Indeed, 10mm Mag brass in the F/L sizer and you're set. My question is, will I have to full length size each time and if so what do I use to trim? Here's a vid of the 250s - you can tell its a totally different sound with the sonic crack.įrom what marty's told me, all I have to do is form 10mm mag brass and load them up. Too damn bad they're *just* above supersonic The 250s work great full auto, and shot real well.īelow is 2 3 shot groups with the 250s. ![]() ![]() The 225s, wouldnt cycle at all full auto, and they dont group all past 25yds. ![]() I spent all 300s I had yesterday, so all I had to test were the 225s and the 250s. I threw a scope and bi-pod on today to see how it would group at 100yds. Here's a short vid, note the sound comparison of the "click" at the end of the trigger resetting. Throw a light on it and I'll have a new night stand SBR. The 250s and 300s group as tight as anything else at 50yds. The 300gr bullets are subsonic, but I have so some 225 and 250 grainers I'll take out to 100yds tomorrow. 300gr bullets aren't anything I ever expected to shoot from an AR, but its the quietest fun I've had with a black rifle.ġ1.5" barrel with a AAC EVO-9, and all you really hear is the action. SBR Barrel with Headspaced Bolt AR-15 338 Spectre Standard Contour Carbine Length Gas Port 16.5' 1 in 6-1/2' Twist 5/8'-24 Thread Stainless Steel.
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