Hey buddy I hope this helps.
I am getting my McMillan A4 stock inletted by my local Gun Smith to fit a badger EFR. They will be using this guide
btw I am running a Rem 700 5r Gen 2 Long Action in 300 Win Mag with a krieger 30 Inch barrel and a Nightforce ATACR 5-25 F1 and it will all work perfectly according to my Gun smith. Also remember to take into consideration you may want to keep a sun shade on your scope and take that into consideration when mounting your EFR into your stock. Also, you can mount the EFR facing forward or backwards to sllow that extra room for your Clip on Night vision Device.
1 final thing is when mounting a Badger EFR you may need to taper down your barrel like i will need to. Ill link a pic (these pics I found on google and aren't my rifle by the way).