Livnoutdoorsxd9
Member
- Joined
- Aug 5, 2011
- Messages
- 121
Anyone shooting one? I am, and I love it!
For those of you that haven't heard of it, the 277WLV is a 5.56 or .223 case shortened approximately 5mm and expanded to .277 diameter. The case forming process is nearly identical to 300 blackout.
I've been seeing great performance for such a small case out of my 16" 1:11" build with 90g bullets going 2700fps, and 110g bullets reaching 2500fps. The numbers I was getting were close enough to my 6.8spc that I couldn't justify keeping both, so I decided to stick with the option that uses milspec bolts and magazines with plentiful, inexpensive brass!
I also recently picked up a 10.5" 1:7 twist barrel for subsonic applications in an AR pistol build which will soon be an SBR. Some testing has already been done with favorable results using both 150 and 180g bullets traveling under 1100fps while functioning reliably. The thought is to be able to run a mag of subsonic followed by a mag of supersonic without changing anything on the gun and maintaining reliable cycling.
I have lots of loading and playing to do when this WI weather warms up, so I've been working to convert about 1,500pcs of 5.56 brass and am past the half way point.
If you haven't looked into the cartridge, I highly recommend it!
Here's my 16" build
My 10.5" Pistol
And my progress on the cabin fever project!
For those of you that haven't heard of it, the 277WLV is a 5.56 or .223 case shortened approximately 5mm and expanded to .277 diameter. The case forming process is nearly identical to 300 blackout.
I've been seeing great performance for such a small case out of my 16" 1:11" build with 90g bullets going 2700fps, and 110g bullets reaching 2500fps. The numbers I was getting were close enough to my 6.8spc that I couldn't justify keeping both, so I decided to stick with the option that uses milspec bolts and magazines with plentiful, inexpensive brass!
I also recently picked up a 10.5" 1:7 twist barrel for subsonic applications in an AR pistol build which will soon be an SBR. Some testing has already been done with favorable results using both 150 and 180g bullets traveling under 1100fps while functioning reliably. The thought is to be able to run a mag of subsonic followed by a mag of supersonic without changing anything on the gun and maintaining reliable cycling.
I have lots of loading and playing to do when this WI weather warms up, so I've been working to convert about 1,500pcs of 5.56 brass and am past the half way point.
If you haven't looked into the cartridge, I highly recommend it!
Here's my 16" build
My 10.5" Pistol
And my progress on the cabin fever project!