Call me crazy but when you mess around trying to neck size with low pressure cartridges you get inconsistant brass growth. Sooner or later you get casings in which some are a bit hard to chamber....some chamber with a little tension.. and some with no tension. In guns I've played with these situations give me horizontal stringing. Now combine that with the "feedback" you get with a lever action when chambering compared to a bolt action. With the bolt you get fairly "positive" feeling when closing the bolt...with the lever alot of stuff is happening as you move the casing through the cycling.
Can't quite figure how fl sizing is a "pain" compared to all this. Oh yah....gotta wipe the lube off a casing that is consistantly sized and will give great accuracy. Maybe I "over think" things to my detriment.