I use the same model rifle for ballistics work. I actually have two of them. I can highly recommend a Ferret50. It's a very well engineered rifle. The upper has been independently tested and will not fire out of battery. The barrel can be swapped and head spaced using a couple of (large) strap wrenches. The manufacturing quality on the rifles I use is excellent.
This deal is a good opportunity for anyone looking to get into 50 BMG.