.338 Spectre

[HamLund_Tactical]

I like the idea of it over the BO because of the bullet weight. You can buy new 338 brass for like .21 each. I think SBR has the best price on it.

Yep. And if you are solely basing your decision on sub sonic performance mass and energy is something the 300 just can not match.

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[OC455]

I believe the .338 Spectre pushes a 160gr. bullet between 1800-2000fps...

http://www.teppojutsu.com/338.htm

[Parrandero]

http://www.quarry.nildram.co.uk/TeppoJutsu.htm

338 Spectre

This is also designed for the AR-15 action. The .338 Spectre cartridge is based on the Starline 10 mm Magnum case (and retains that headstamp) which has the same diameter as the 6.8 x 43 Rem SPC, so requires the use of dedicated magazines. It may therefore be regarded as a shorter, necked-out version of the .30 HRT. Case length is 31.5 mm, rim diameter 10.6 mm, body diameter 10.8 mm, neck diam 9.2 mm.

Bullet choice is wide, ranging from 160 grain (10.4g) Barnes X Spitzers, through 180 grain (11.7g) BST to 300 grain (19.4g) HPBT Match King rifle bullets. Overall loaded length is similar to the ubiquitous 7.62 x 39 M43 and .223 Remington. Furthermore, it allows the user to employ existing suppressors for the 9 mm without modification, providing enhanced tactical firepower.
The standard .223 lower receiver for the AR-15 can be used without modification, and the rifle will function in both semi and full automatic modes. In addition to the AR-15 weapons platform, several other types of firearms can be made to accept this cartridge, including the Mini-14, T/C Encore and various bolt and pump action rifles. The magazine for the AK-74SU “Krinkov” will accept the .338 Spectre cartridge, and Teppo Jutsu are working on the first prototype rifle in this cartridge.
Ballistic performance is comparable to the .357 Herrett, .357 Maximum or .35 Remington or even the 180 grain load for the .44 Magnum. In the 16" (406 mm) barrel carbine, the .338 Spectre will launch the 180-grain BST at 1,800 fps. By loading the 225-grain Hornady Spire Point bullet at subsonic velocities for suppressed application, the muzzle energy approaches 540 foot-pounds, rivaling the high velocity 115 grain (7.45g) load for the 9mm Parabellum. 6.5mm sabot loadings are also being investigated.
Typical loads (bullet weight/muzzle velocity) are:

160 gr. (10.4g) 1,800 fps (550 m/s)
180 gr. (11.7g) 1,800 fps (550 m/s)
225 gr. (14.6g) 1,040 fps (317 m/s)
300 gr. (19.4g) 1,040 fps (317 m/s)

[Team Helotes]

Here is a link to the brass. http://www.SBRammunition.com/338spectre.html

[Maryland_Shooter]

Cartridge wise no larger than 6.8, just larger bullet. Same OAL as normal, .2.2ish. Uses 6.8 bolt and mags. Cases are form by 10mm brass through a FL die and can even be formed by trimming and resizing 6.8 brass just not that practical, IMO.

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Holy hell, here I go again, yet another wildcat, off the wall.

I like it, I like it a lot.

Who, when, where, how much and how fast. I need more 411.

[Maryland_Shooter]

Yep. And if you are solely basing your decision on sub sonic performance mass and energy is something the 300 just can not match.

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Where can I read more, but brass, get an upper?

ETA: OK, reading more . . . .looks like I may jump in another wildcat.

You guys are costing me money . . . .

[fireguy]

Where can I read more, but brass, get an upper?

ETA: OK, reading more . . . .looks like I may jump in another wildcat.

You guys are costing me money . . . .

That is what Internet forums friends are for...all we ask in return is pics, reviews, and stories...

[Maryland_Shooter]

Well I am in the beginning stage of testing the 300 BLK, but there seems to be such bad blood between the camps, I 'm not sure you want to see a 300 BLK.

I like variety.

Is Marty the only guy doing the .338 spectre?

I didn't see complete uppers, which is what I'd look at to start with . . .

[HamLund_Tactical]

I haven't too many complete uppers, but Marty has allowed SBR to sale barrels for now.

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[Aramark]

I wrote them about uppers, have not heard back from them. if they don't offer them I might have to get a barrel and built one, but i have never built a upper and don't know how hard it would be.....