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65 in-lb front and rear.




The action screws typically have a Loctite patch on them from the factory but you could always add a drop of Loctite 242 (blue) to the threads. Personally I would shoot the rifle and check the torque of the action screws periodically to see if they're working loose before adding additional Loctite.

Yikes, I would be scared of cracking the tang area with the rear screw that tight. Kimber recommends 45 in-lb front, and 35 rear.

The wood stocks have aluminum pillars to transfer the clamping force from the underside of the action screw head to the threads of the receiver just like the synthetic stocks, so it's all metal to metal contact.

Well, it’s done. Had to sand the Mountain Ascent stock a decent amount at the forend to float the barrel. 308 fit perfectly in the classic stainless stock, I love the look, the extra weight is still less than any other wood stocked rifle with a Z8i on it, and I do like the hinged floor plate.

Meanwhile, suprisingly, the 243 wound up at 5 lbs 1.35 oz. Thats with a titanium mountain ascent bolt, but no other changes to the action.

And thanks to a slip with the dremel sanding bit and a stripe in the stock behind the tang thanks to my Swaro’s weird ass rear flip cover (left it open with the rifle slung over my shoulder and the rear cover rotated the focus and ground away a nice 1.5” or so of the olive green finish), I just ordered some hunter green krylon, Black webbing paint, and clear. Been wanting to try that. I know it’ll add an ounce or so but it should look sweet and be more durable.

You are right. The wood stock would have no problem with that torque. The OP mentioned a Montana, so that's why I made that comment. I should have made it more clear.

A few years ago, Kimber had a problem with cracked Montana stocks, so they now recommend 35 in-lb for the rear screw.

I tested it by upping my torque screwdriver 5 in/lbs at a time when taking the mountain ascent apart. They both finally cracked at 45 in/lbs, so thats what they went back in at with the 243 action. I did run the 308 up to 65 in/lbs, I didn't feel as if I was stressing anything. It was maybe a 1/4 turn more than the 45 in/lbs.

The synthetic stocks also have aluminum pillars for metal to metal contact. If you call CS these days you'll get 65 in-lb front and rear on all action screws for all rifles.

Kimber sells a 65 in-lb torque wrench if anyone is interested. I have a couple that are very convenient for action screws but I prefer and use Wiha torque screwdrivers for general rifle/optic use.

http://store.kimberamerica.com/65-in-lb-torque-wrench

I believe you. Who do you talk to at Kimber to get these answers? Every time I call, they still say 45/35, and they will not sell me a Montana stock without sending the gun with a broken stock in.