Ripp - I was kind of thinking aloud on the 6.5 RSAUM. My experience of hunting rifles in this kind of calibre is limited to the .25-06, .270, 270WSM, 6.5-06 and 6.5x55. I have also shot the 6.5x284 as a target round and recently the 6.5x47Lapua. My experience has me convinced that the 6.5x47 would be more than sufficient for all deer stalking in the UK from muntjac and Chinese Water deer, roe, fallow as well as sika and reds. It is an optimised 300CISM target calibre (sort of an elongated 6mmBR or a shortened .260) and according to David Tubb is an ideal 600m calibre. I reckon it would be an ideal chamois round too. It doesn't do anything a 6.5x55 can't in hunting terms, but does offer a shorter more efficient case optimised for medium range target accuracy. However, for retained energy at 300 to 500 yards for a mountain hunting round, I think the 6.5RSAUM could be ideal. Norma is making (excellent) .300RSAUM brass that can be necked down and the case has a longer neck for the longer high BC bullets and reduced throat erosion than the WSM cases. I reckon this would give it the edge over the .270WSM. I plan to try it out anyway!