This thread is more aimed at getting the opinion of anyone out there who may shoot, or have previously shot a 7mm Short Sherman (SS) compared to the proven 7 SAUM. I've never gone down the path of a magnum calibre but with many of the top shooters (at least in Australia), resorting to the likes of the 7 SAUM at major competitions, and at 'the longs', I'm seriously looking at magnum options. I've got plenty of friends who shoot SAUM's so I know what they are capable of but I am a fan of 'improved cartridges' and this looks to be a definite option with the 7 SS. So why would I consider a 7 SS over a 7 SAUM? Well based on the opinions of others, and the reading I've done, is that it is essentially a more efficient designed SAUM, with a slightly shorter OAL, but a longer neck with a 40 degree shoulder, so it's been 'ackleyized' and has a slightly blown out sidewall, similar to a 284 Shehane. So velocity wise it will run with a SAUM but should require less trimming, and is made by ADG brass which from all reports is very uniform and strong. I know some users on hunting forums report better barrel life but that's not a major concern. The additional cost of brass/dies is not really a consideration for me given SAUM brass is expensive in Australia anyway, and ADG brass is yet to become available here so shooters stick with Norma. If anyone out there has run a 7 SS or the Sherman Max which seems to be a direct improved version of the SAUM, was it easy to tune and keep in tune? I would only be using this calibre for F-Open with the idea of throwing the new Berger 190s down range. Any thoughts or comments welcome, even if it's based on the 30 cal versions.