![]() of energy.īy loading the 300-grain Sierra HPBT MatchKing bullet at subsonic velocities (1,040 ft/sec. BUT discount any odd and overly short cases, common sense, right Toss those outliers or use for top of pressure signs testing The shorter cases will grow and you can catch them in a couple more cycles. The new caliber, developed by Q, completely re-imagines energy on target by using a faster twist rate 1:3, compared to the popular twist rates of 1:7 and 1:8 for calibers like 5.56 NATO and 300 BLK. 338 Spectre will launch the 180-grain BT at 1,800 ft./sec., approaching 1,300 ft-lbs. Measure the average of the three shortest cases, add. The 8.6 Blackout is widely spoken of as the big brother of 300 Blackout. 35 Remington or even the 180-grain load for the. 338 Spectre offers something for everyone.īallistic performance is comparable to the. With it's ability to launch a wide array of bullet weights combined with it almost non-existent recoil and extreme accuracy, the. I wouldnt use them, trim length is 1.676' but I have checked to barrels using a neck length gauge and they will accept brass up to 1.695 on one and 1.705 on the other so even trim length is kinda short, 1.685' or 1.690' would be a good safe trim length in both of my barrels and is a good bit over the trim length in the books. After a bit of R&D we found that there are several powders that work very well, consisting of the slower magnum pistol powders and fast burning rifle powders. ter Weeme to expand the load data and look at commercial production of the ammunition. While most hunting ranges require similar kinetic energy and trajectory, the 6.5 Grendel outperforms 6.8 SPC with its aerodynamic capacity that allows it to be resistant to wind drift at ranges past 200 to 300 yards. In November of 2005 Reed's Ammunition & Research (got together with Mr. The trim to length is equivalent to the minimum case length. Marty ter Weeme of Teppo Jutsu (The cartridge has a wide array of applications Including small to medium game hunting, match target, and suppressed sniper shooting. 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. Its 3.340-inch overall length permits its use in standard-length actions. ![]()
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