Using a Pump is all about having a very consistent action and muscle memory, which you only gain from shooting the thing as often as you can say a few hundred shells.
Don't expect to buy one and be proficient with it after only a few outings as your be disappointed and wonder why you didn't buy a semi or O/U.
Having said that they are a great for rough shooting and hardly every jam as your the one racking the shells in, also your choice of shell size and load is much improved over most semis.
A bit like Marmite really mate, some like em some loath em.
But if you want to see wha