I can attest to people behind the sporting goods counter not knowing what they are talkiing about ( at least this time)..... My very first rifle was a Marlin 336 .30-30. I went to a local store having a sale on them ( You had a choice between the .30-30 or the .35 rem same money) I was new to the game so I asked the man behind the counter what the difference was ... not much was the answer but the .35 rem shells are more expensive so I left there with the .30-30. I have a .30-30 again but I only use it for certain situations