I rarely use a casting reel any more but when I did it was usually in a big lake or wide body of moving water and was using sinkers and I never had any problem casting as d=far as I wanted to. I suspect you are talking about using lures on both rods and reels. One thing that gives the spinning reel an advantage is that the line comes off the spool by it's self with very little friction to overcome. On the other hand, when you cast with a casting reel the spool must spin in order to allow the line to unwind, the act of the line leaving the reel makes the spool spin so there is friction, additionally if you are using a level wind reel, there is another moving part that can cause friction and slow the spool from turning. Just an observation of what may be the cause.