My First Wildcat

[TXCOONDOG]

MDWS .277 Wolverine 16" Barrel w/ 1:11 twist , *** Shorty Brake, DPMS Upper Receiver, Mil Spec Barrel Nut & Delta Ring, Magpul Moe (BlK) Mid Length Handgaurd, DPMS Picatinny Rail .750" Gas Block with Mil Spec SS Gas Tube, Mil Spec FA BCG & Charge Handle, Leupold 30 MM Mount , and a 20X SWFA SS Mil-Quad Scope for load development at 50-250yards.

NOTE: After load development (dope chart), I will run a Leupold VXR 1.25-4 Scope

Spikes Texas Predator Posse Logo Lower with 3lb Skeletonized Timney Trigger, Magpul ODG CTR Stock, Magpul ODG Moe Grip, Mil Spec Buffer Spring Tube with Spike ST-T2 Buffer, and Magpul 5.56 P-Mags.

Will start my load development this week using 6.8 (.277) Nosler 90 grain bonded bullets, 2200 powder (1680 and 5744 are on my list) and CCI 41 primers:

 

[Ratdog68]

Lookin' like a pile of fun there, congrats on getting it together.

 

[FrankT]

Nice, Mark has done it right!

 

[RattlesnakeDan]

Very Nice! How does that compare to the 6.8 in real world results?

 

[Ratdog68]

Very Nice! How does that compare to the 6.8 in real world results?

It's a similar concept to the .300WTF. It's a 5.56 case with a 6.8 (.277) bullet. Mark (MDWS=Mad Dog Weapons Systems) is the developer of it. He got started with it on 68forums. After launching, he has his own forum for it now. It looks quite promising with both sub/supersonic. Mark's approach has been quite positive, in that he's just presented it, and allowing it to stand on its own merits... very unlike the dweeb behind the .300WTF.

Mark joined here as a member, but hasn't been real active ("MDWS").

 

[TXCOONDOG]

Posted numbers that I've seen from others using 90gr Gold Dots with Max Loads:

25.3 gr of 2200= 2575
23.9gr of 1680= 2740
21.6gr of 5744= 2791

Mark is a good guy and has answered all my questions.

 

[DaveABQ]

I was going to order the parts, but didn't see any dies in Stock for it

 

[TXCOONDOG]

I was going to order the parts, but didn't see any dies in Stock for it

You can pre-order dies via MDWS which is what I did. In the interim, I ordered brass from JBs Firearms and used my 6.8 seater (can use a .270 too) to seat the bullets.

 

[TXCOONDOG]

MDWS 16", SS barrel with 1:11 twist

Powder: 5744 @ 22.7 (Primers Flattened)
Primer: CCI 41
Bullet: 90gr Nosler, Bonded Solid Base PP
COL: 2.104"
Average velocity: 2703 FPS
Group size: .986"
Note: four shots under .700 and pulled 5th.

5744 @ 23grains blew primers!