F-Class has become one of the fastest-growing types of mid-range and long-range rifle competition. Because of that popularity, a market for specialty equipment has been created, including stocks. McMillan Fiberglass Stocks offers a variety of stocks for both F-TR and F-Open disciplines. Shown above and below is the new Kestros*, McMillan’s upgraded, second-generation F-Open stock. This is an impressive offering, with good stiffness, a torque-taming low-profile design, and good adjustability for the shooter. Our friend Boyd Allen had the chance to test drive a Kestros recently.

McMillan Kestros “First Look” Range Review by Boyd Allen
McMillan’s first-generation F-Open stock was well-received, and this new GEN II Kestros includes some significant improvements, making it even better. To achieve increased stiffness, the fore-end was filled out and its fill density was increased. (F-Open rifles have a rather generous 22-lb. weight limit, so the slight increase in stock weight should not be a problem.)

Because F-Open Shooters typically shoot long, heavy bullets through fast-twist barrels, torque control is an issue, which is why the base of the front section of the fore-end is close to the barrel. This low-profile design counters torque. By maximizing the angle defined by the bottom corners of the stock and the bore’s centerline, this stock geometry increases resistance to roll.

As tested, this Kestros stock features a nice three-way adjustable butt, as well as an adjustable cheek piece. Symmetrical palm swells and the symmetrical cheek piece make the stock truly ambidextrous. We believe that the cheekpiece locking knob can be switched to either side, adapting to both lefties and righties.

Comments by Tester Boyd Allen
Wanting some visual pop for pictures, and knowing that this was to be a range-only rifle, I ordered a tri-color flame pattern gel coat, the most durable of stock finishes, because it is part of the stock rather than being an applied, surface-only finish.

McMillan has been in the stock business for a long time, and when you sit down behind this one, you understand why. This company really knows what it is doing. The Kestros is a real pleasure to shoot, tracking perfectly. As the saying goes, it falls readily to hand.

My test Kestros stock came very accurately CNC-inletted for my action, with the optional aluminum pillars. The fit is so good that I am doing a full load work-up before doing final bedding, so I can see just how much (if any) bedding improves accuracy. For this test I have chosen a 6PPC barrel (yes it does look short with this stock.) because it will allow me to make finer distinctions in this area. Later I will be working with other calibers (and longer barrels). So far I have been very impressed with this stock — ergonomics, tracking, stability, build quality, and inletting have all been excellent.

* The original Kestros (aka “Kestrosphendone” or “Cestrus”) was an ancient Greek military weapon, a type of sling used to hurl heavy, arrow-like finned projectiles.