It sounds to me that the gun dealer was either getting a commission on the .270, or did not know what he was talking about! The 7MM-08 is just as good as the .270 at any range that you should be shooting deer at! So take your pick! You would be satisfied with either caliber! As far as finding bullets, the 7MM-08 has gained a lot of popularity over the last few years, so finding ammo should not be a problem either! Good luck!