Just finished up the 300 win remage build a couple weeks ago and finally had a few calm days to run some rounds down range. The rifle started out as rem 700 sps 300 win mag. I lapped the lugs once i removed the barrel and drilled the scope mounts out to 8-40 and that is all that was done to the action. I used a boyds laminate thumbhole (nutmeg) that i pillar/glass bedded using score high bedding/pillars. I also had to open up the barrel channel to accept the criterion 26" heavy varmint. When I installed the barrel I used criterions heavy recoil lug/barrel nut. The scope base is an EGW 0 MOA that is bedded to the action. I mounted my leupold VXIII 8.5-25X50 for load development. The attached images of the loads i have tried (excel sheet) all seemed to fair pretty well. I have decided to go with the IMR7828 (all loads are the Hornady 168 A-Max) as this has given me the best groups/velocity i was looking for. This will primarily be a hunting rig, so i am pretty happy with the results so far.