I went back and looked at what action you said you had, and Midway or Sinclairs/Brownells has them for a 700sa its called a Wyatts extended window box for the WSMs, gives you a max length of 2.995" +- a couple thousandths. The bottom of the receiver and bolt stop need to be milled a little for installation. They should still be around 45$ from either place I mentioned. Also the H4831sc gives the best charge density next to 7828ssc but isn't as sensative btw, works good with WLRP or fed210Ms.
I just loaded up some test ammo for the Neseka WSM / Krieger we just picked up. Loaded 36 - 39 of H4350 in 1/2 gr incruments. Trying 210 VLD with Moly @ 2.85 (mag limited) and 210 Fed primers. They sure look short after loading for my 1K match rifles at over 3.2".
went out and shot today, conditions were less than favorable with 3-10 mph winds blowing to the left. mixed with slight sprinkles of rain.. still very happy with the results..
all shots were 3 shot groups @100y cci #250 primers, rem brass, shot (57, 58, 59 grains of h4350), .120 jump. with 59 grains started showing primers flattening SLIGHTLY but i didnt shoot the 59.5 (i will def try it when im infront of a chrono) but this test was only for accuracy and i was more than happy with the results for a first test..
P.S. not sure what order the pics will post but i wrote the powder charge next to the holes in the picture.. on the pic with 59 there is a hole in the bottom left. ignore that, it was cold bore shot with my old load