When you do a search on gunbroker there are only half a dozen 7 wsm items total while for 270 wsm 8 pages includes guns, ammo, reloading, etc.
I never would have guess the 270 wsm was that popular.
I think the 270 is very popular due to the fact it actually offers a step up (albeit minor is some rifles) velocity wise over the benchmark case. Although, the 270 is not a mag like the 300 win/7 rem.
I'm not saying it matters, just public perception IMO.
