Went out Wednesday evening, Thursday morning, and again this morning with the Rokstock. Long day planned for tomorrow as well with a buddy, predator hunting and long range shooting practice. I have 200 rounds through the gun with the Rokstock now, with likely somewhere in the neighborhood of 300-400 rounds planned for tomorrow.
About 3 dozen kills already on coyotes and antelope jacks from most of my go to field positions. Kills from 30ish yards all the way out to a coyote kill at 643 yards, steel and paper targets out to 950 yards so far (tomorrow will be cross canyon past 1,200 yards).
The stock is incredibly easy to get behind. For those who had concerns about "adapting" to an "extreme" negative comb and flat bottom rifle stock, stop being concerned immediately. Every single field position, including off hand shots (2 kills on rabbits off hand at 30ish and 60ish yards) feels very intuitive. Tracking moving targets both free hand and from built field positions is excellent.
The stock shouldering and building positions is very natural feeling, and if I'm being honest, feels how a rifle stock should feel. It immediately puts your body and hand in the proper position for quick target acquisition and killing. It sits perfectly in the shoulder pocket and "cheek weld" is spot on every time (Tikka UM Low Rings). I am typically a longer length of pull shooter and I will not be making any modifications to the production stock. Spartan adapter fits perfect with both my long and short bipods.
I never really had much trouble "spotting shots" or issues with a ton of of muzzle rise with my Tikka .260 shooting 129 grain bullets with other stocks. I do prefer shooting my .243's and .223's over the .260's and 6.5CM's though. What I will say is the rifle in general is more shootable, and feels more like shooting my Tikka .243 than a 6.5 variant rifle, when to comes to shoulder punch, ability to maintain sight picture in awkward field positions, and how much the rifle wants to "jump" when you don't get an absolutely perfect shoulder pocket/square body position. My wife is going to love this stock on her .243 hunting rifle.
Various field positions used for kills and target shooting...
Off hood of vehicle with spartan short bipod. Works excellent with no rear rest (using left hand), small UM bag as a rear rest, puffy wadded up as rear rest, UM molinator, and bino harness, etc.
Prone with short bipod or UM Molinator (V shape down) up front. Again, works excellent with any sort of rear rest or no rear rest (this is the position that many were potentially concerned with). I killed two coyotes back to back in this exact position below (270 yards and then his buddy ran roughly 150 yards diagonally left to right before stopping and then dying; Maven SHR MIL reticle hold for a 350 yard shot). Practice judging distances while maintaining sight picture folks!
Prone shooting off pack. Works as expected, zero fuss. Stacking bags on top of pack for more height works great. Various rear rests used with no issues.
Seated position shots with long Spartan up front are very effective for killing and tracking moving targets. The Rokstock is by far my favorite stock I've used for these shots so far. Whether using legs/core only for support or adding the pack into the mix for longer shots, the stock works great. Kneeling shots using pack as a rest works excellent as well.
Oh and for you bench rest shooters, do not fret, the stock just plain works even on a bench or table setup (always feels weird for me to shoot like this these days though).
TLDR: The stock flat out works as expected. It's the easiest hunting stock to shoulder and get behind with no fuss that I've used. Ergonomics, grip, cheek weld, shoulder pocket, trigger reach, and mitigating muzzle rise are all the best of any general purpose lightweight hunting stock that I've ever shot. There is zero concern from any field position on being able to make a shot and be comfortable (no dreaded "learning curve" or "compromises" to shoot a stock "with this shape"). Buy one and go use the thing!