ROKStok- why, what, how

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This will be an ongoing thread for information about the ROKStock. It will be updated as information and results are found.



To start the why-



General purpose stock overview: “Fit for purpose”


The impetus for this project was the desire for a stock for general hunting that would be suitable for use in all conditions and environments- woodland/timber, high desert, rolling prairie, rocks and cracks, above alpine, sub arctic, etc. From -20° to over 100°F it should have no glaring functional issues. It should be relatively light weight, and due to cold and hot weather, non metal- composite or wood. Action should not require glass bedding for correct and solid fit.

It should be optimized for shooting as much as possible with magnified optics while adhering to the general hunting constraints above.



More than 20 years of high level shooting by multiple individuals and venues noted certain design characteristics that increased shooting performance nearly across the board regardless of hunt, sport, or event. Those included a near vertical grip- not pistol grip, that is rounded and scalloped to allow the thumb to be inline with the tang or nearly so. Trigger reach should be relatively short. It should have a negative comb, and raised recoil pad (butt pad inline with barrel). The toe should be parallel with the bore, or at least have a usable flat spot. The forend should be parallel with the bore, of standard sporter width, flatter on the bottom with rounded sides. A hidden or recessed way to quickly attach tripods or bipods, that does not interfere with the forend, or carrying.

Such a stock would combine the best characteristics of a traditional sporter stock- namely carrying comfort and weight; with the best shooting characteristics of Scandinavian and Biathlon target rifles, as well as long range practical field rifles.








ROKStok Specifics:

The RokStock was designed as a general purpose, all range hunting stock. While primarily aimed at western spot and stalk hunting, it is equally suitable for any general hunting regardless of location.

It is a generalist stock- not a specialist stock.



Features:
  • Weight
  • Ergonomics
  • Design
  • Type of stock/chassis


Weight:

- Minimum weight without sacrificing stability. 26oz projected.



Ergonomics:
  • Ergonomics
    • Grip
    • Forend
    • Access to bolt and safety
    • Recoil management
    • Buttstock
    • Length of pull

  • Grip near vertical, thinner rather than large, with a slight palm swell. Distance from trigger face to grip face is 1.7”. Hand position is near vertical, with the back of tang and grip being rounded/fot for the firing side thumb to line up neutrally inline with tang, or slightly to weak side- not fully wrapped or fully off (PRS)

  • Forend is near parallel with bore (front to back). Sporter profile. Rounded for carry comfort, and ability to wedge/lock in on odd supports. Is not overly wide. Nothing hangs from the bottom of the forend unless currently using that item- I.E., no pic rails, Arca, etc. Picatinny, ARCA, and Spartan flush fit into forend.

  • Access to bolt and safety. Easy and smooth access to safety and bolt.

  • Buttstock. Top of recoil pad is above bore centerline. Negative comb (sloping down from recoil pad to action). As high as possible without an adjustable cheekpiece while still allowing a sight picture with low rings. Toe is parallel with bore, with as long a rest surface (front to back) as possible.

  • Length of pull. One standard length (13.5”) with a spacer available for longer LOP’s, and a compact version with 12” LOP with spacers to lengthen (in development). Due to the buttstock, comb, and grip designs- LOP differences are less critical than most stocks.



Design:

Sporter style stock with correct design for shootability while still being as light as possible for an all around hunting and field stock- I.E., light weight and shaped for carry comfort in the hand.

Recoil management. Straight line, neutral. The combination of parallel forend, above bore recoil pad, negative comb, parallel toe, and correct grip geometry all work together to optimize the recoil path straight to the rear with as minimal muzzle rise and lateral movement as possible.



Field Position Shooting- Interface with front and rear supports

  • Forend and toe are parallel or near parallel with barrel. This facilitates straight line movement to the rear during recoil regardless of front and back rests. Density and type of rest is less critical as no pressure is applied into the rest during recoil.
  • Scalloped forend with recessed/flush picatinny, Arca, and Spartan mounts remove snag points and do not effect carry in the hand.
  • Sporter style forend with slightly flat bottom and rounded sides. Comfortable to carry, and rounded to be less critical of uneven surfaces. Locks into cracks and rocks better than wide flat forends.



Rigidity/Accuracy

  • Bedding it not required
  • Ease of install


Stockys Accublock does not require glass or steel bedding, is a precise fit and extremely durable. Impacts and stress cause no issues with bedding. Stock is a straight user swap.
 
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Cutting, sanding, and applying bondo to stock base for initial scanning of design-
IMG_3973.jpeg

Extremely aggressive-
IMG_3981.jpeg



First 3d printed stock for touch points-
IMG_5478.jpeg


Confusion resulted in the forend being made extremely wide-
IMG_5484.jpeg


IMG_4685.jpeg


To much comb height for some users was a concern and not neutral recoil-
IMG_4700.jpeg




2nd iteration. Corrected forend (on left)-
IMG_5483.jpeg

It was found that the comb was too high for some users.


3rd iteration with .25” reduced recoil pad height, and slimmer forend-
IMG_5479.jpeg

However, some issues with Ceracoat and heat-
IMG_5477.jpeg


Another stock printed and on the way….
 
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3rd iteration reprint-
IMG_5485.jpeg



This design was close. However, with multiple new people shooting it, one person with a relatively unique face shape could not get a sight picture with low rings. Also, there were some long discussions about forend width. It was decided to modify and reprint.



4th iteration. Recoil pad lowered by another .25”, forend width reduced .1”-

IMG_5120.jpeg


Live fire commenced immediately-
IMG_5316.jpeg

IMG_5427.jpeg


Handling, recoil control, comb height, grip, and forend are all near ideal at this point. Multiples shooters with nothing that could be changed without adversely effecting something else.

Finalized design on 4th iteration, and mold produced. Waiting on first production stock.
 
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#1

IMG_5701.jpeg

IMG_5703.jpeg


Pulled old rail. Required some heat to loosen from the Loctite 380-
IMG_5704.jpeg

IMG_5706.jpeg

Quick scrape-
IMG_5707.jpeg




Wipe down with alcohol-
IMG_5708.jpeg


Degrease new rail and screws, and reapply Loctite 380-
IMG_5713.jpeg




Nail polish and torque tight-
IMG_5714.jpeg




Remount scope and-
IMG_5716.jpeg



Fit is good.

Sporter contour barrel inlet is tight, and will/does touch if pressure is applied-
IMG_5720.jpeg
 
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Negative 6°
IMG_5754.jpeg



7.5lb 308 win, bare muzzle. With puff jackets and hood, reticle moved around 1.5 to 2 mils left during recoil, muzzle rise was virtually non existent, and over 80% of shots were spotted through the scope on 10x, at 120 yards.

IMG_5730.jpeg


Frosty-
IMG_5727.jpeg
 
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The beta testers have them and are giving feedback. We are closing in on 2,000 rounds with the initial 5 stocks so far.

IMG_6129.jpeg


IMG_2997.jpeg

IMG_6088.jpeg



Quite a few have shot the stock and all can use it with low rings. About 15% prefer it with medium rings, or a pic rail and low rings due to their preferred head position and how they shoot. Except for ring height, all testers have reported nearly identical behavior during recoil- that’s good.

There is one other detail that has to be decided and then stocks can start shipping.
 
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Two of the beta testers wanted grip on the forend, grip, and bottom of buttstock, something warmer for their cheek/face, and slightly higher scope-
IMG_3011.jpeg

IMG_6200.jpeg

IMG_6199.jpeg


Note: grip panels will be on production stocks, these are the first out of the mold and were shipped quickly.
 
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Rokstok was used on a 6UM to kill two elk-

First kill with a Rokstock. 782 yards, watched the hide ripple and the elk sag at the shot.
IMG_6433.jpeg


Luke from S2H killed the second one-

IMG_6434.jpeg



After the hunt the stock was switched back to the 308 for continued use-
IMG_6425.jpeg
 
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The grip panels for the mold have been solidified, and when received the stocks will go into production.


To answer the questions about other inlets- yes. Eventually.

Tikka T3
Tikka T1x
R700
M70
Howa 1500
Howa mini
Browning X-Bolt

Maybe others.
 
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