Best part about the Whisper is that you can buy loaded ammunition from CorBon, but we are working with Reed Ammo to bring loaded Spectre ammunition to the market as well. The Spectre, however, enjoys a nice selection as well, ranging from 160 grain Barnes X Spitzers to 300 grain Sierra Hollow Point Boat Tail Match Kings.Ĭost/Selection – Both uppers are custom jobs however the Spectre is only available from Teppo Jutsu, whereas the Whisper can be bought from several companies under other names like. 308 diameter bullets, which arguably is the most prevalent bullet in the world. 223 can be a laborious process).īullet selection – The Whisper enjoys the truly amazing selection of. The Whisper runs at higher pressure but has slightly smaller case capacity, the Spectre brass might be easier to get (Fireball brass can be hard to find at times and forming Whisper brass from. Now, both enjoy similar ease of assembly/maintenance, as well as similar magazine capacity. 223 Remington brass, was the winner without doubt. 338 Spectre a viable option to the Whisper. With the advent of the 6.8 SPC, OEM bolts and magazines for the AR-15 are now available, making the. I admit I cannot be impartial, but I will give as honest a comparison of the two as I can:īase cartridge/rim size – the Spectre, being based on the 10mm Magnum, has the same rim as the. The 300 Whisper® has a number of advantages over the Spectre, however, we feel the Spectre offers some improvements over the Whisper in the AR-15. 300 Whisper® from SSK Industries is the progenitor of this type of cartridge, the grand daddy of them all. 300 Whisper®?Ĭredit must be given where credit is due. That might change in the future … In addition, there we do have an agreement with RIP Custom Arms to supply them with complete uppers as part of their “Package”. That and the name Whisper was taken :o)Īt this time only Teppo Jutsu LLC (offers complete uppers. The name Spectre was chosen for to reflect the fact that when properly suppressed in a suitable host system, this cartridge can deliver tremendous long-range energy with minimal signature, “like a ghost”. For expediency sake, the 10mm Magnum brass is really the way to go. 30 Remington case (if you can find them) or the 6.8 x 43 SPC base, but we found the wall thickness to be such that it would require neck turning. The parent case is the 10mm Magnum case from Starline and a simple pass through the full-length sizing die will do the job. Currently, we offer complete AR-15 upper assemblies in this caliber, as well as single shot and bolt action rifles and we are working on the prototype AK-74SU version.Īctually, since formed brass is not yet available, forming your own cases right now is the ONLY way to get brass. In addition, it allows both high velocity and subsonic loads in the same system and delivers more energy on target than some of the competing cartridges like the. 338 Spectre is capable of MOA accuracy out to 500 yards. 458 SOCOM offers superlative performance at short(er) ranges under 150 yards, the. 338 Spectre was to offer a cartridge with broad spectrum application but primarily designed to deliver a heavy bullet with very high ballistic coefficient subsonically at extended distances. 358 CQB cartridge, which itself came about during the design of the aforementioned. It is the result of improvements to the earlier. 338 Spectre was developed by Marty ter Weeme, founder of Teppo Jutsu LLC. You will note a certain similarity to the.
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