Originally Posted by Inniskeen
A 4 car ICR has around 280 seats, a 4 car 2900 about 190. The 1305 Sligo (on a Friday or any other day) wouldn't typically load more 300 passengers. The reasons for the Friday arrangement is to release the 1305 set to strengthen the 1600.
The issue is, if there are more than 280 on board, there's not much standing room.
I have done it before and i can tell You it is not a nice experience standing on a 22k. It's far better standing on the 29k trains .