Nice job chris how do they shoot in your rifles? Lee makes two molds designed for the X39,Chris has the C312-155-2R I use the CTL312-160-2R tumble lube version. I use the Lee .314 push through sizer to apply the gas checks. For general purpose plinking and small game loads I use 12.5 grs. of Alliant 2400,drops my brass right at my feet,for loads that are similar to factory ammo I use 14.5 grs. same powder but you will be chasing your brass unless you do the SKS gas tube modification.
The bullet does triple duty I use in in my 54r and size it down .001 and shoot it in my Sav. 99 in 300 Sav.