Copied this over from another thread:
I put about 300 rounds downrange on the Ravin last weekend, and shot it head to head against my Ruger PCC.
The Ruger is equipped with a Trijicon RM01 (fixed brightness) 2 moa dot rifle sight and Mcarbo buffer.
Out at the muzzle, it has a VG6 Epsilon brake and the carbine is riding in a magpul backpacker stock. Other than that mentioned it is all stock.
The Raven is a 'Platnum' edition with full ambi controls and a fixed 3.5lb Triggertech trigger and Faxon Muzzlock ported flash hider.
I equipped it with a Trijicon MRO reflex rifle sight with a 2 moa dot.
The ammo fed to it consisted of around 200 rounds of RUAG Sintox 9mm ball (124gr), 50 rounds of Magtech ball ammo (124gr) and 50 rounds of handloads (4.4gr. Titegroup over 124gr Montana Gold TMJs).
The Raven barfed on all mags used: Gen 3/4 Glock OEM (G17, G19, G22, G37), Magpul G19 & G17. The only exception once there was around 100 rounds downrange was the mag it came with (Korean KCI) and two 19X mags I brought.
The 19X mags had some difficulty dropping free, a product of a tight magwell and a so-so, left-side mag release that isn't at all very positive.
I also struggled to seat fixed 10 round mags on a closed bolt, which was an issue for all but the KCI.
The Ruger by comparison fed everything I put through it, using any of the mags I had on hand, and I don't recall struggling with mag seating quite like with the Raven..
I was thinking before shooting them together that the VG6 Epsilon equipped Ruger would prove to be an unfair advantage.
The Ruger had noticeably more snap - even with the brake. I think this is probably more a product of the Ruger operating system though as opposed to any perceived differences between the faxon and VG6 muzzle devices. Perhaps in hindsight, the brake isn't doing a whole heck of a lot with an 18"+ length barrel.
The Ruger tells you when it is at bolt hold open on the last round on an empty mag, the Raven doesn't.
I conducted a sudo-accuracy test shooting both at 50m rested with 10 rounds of the RUAG shooting at a 1moa black patch on an IDPA target.
The MROs brightness was dialled down to 4, giving it a bit more definition, while the RMR with its fixed brightness (measures about a 6 on the MRO for comparative sake), had more of the dot 'bleed' out onto the target.
Despite this, the Ruger printed a nice 1 1/2" diameter round cluster with its 10 rounds and the Raven had a cluster with a 1 1/2" diameter, but stretching vertically by about 3".
So far, jury is out on the Raven. I'll need to square away the left side mag release and do some further testing with other mags. It is good I have 6 G19X mags, but not if they are not wanting to drop free.
At half the cost of the Raven, and considering it running like a champ, the Ruger PCC isn't getting dumped anytime soon.