"Pretty sweet man, are pumps legal over there? If not, a bolt action or a double barrel would be good"

"Dual certificate is worth going for if you can. Only a little more paperwork, reduced fees. Usually called a Coterminus Firearms and Shotgun Certificate.

Whichever you decide, they ask you to specify how many guns you want on the certificates, and how much ammunition you (a) want to hold (b) will buy in one go.

Because the certificate lasts for 5 years, estimate how many guns you are likely to have at the end of the term. Two of your fathers, plus the new purchase, plus a couple more down the line is reasonable.

Ammo 'to buy' limit is easiest to work out. Look at the volume discounts you can get. Usually for bullets it is 1,000 and 5,000 rounds where the margins change. So put the one that works out best for you financially. The 'to hold' limit is going to be the 'to buy' limit plus whatever you think is a reasonable minimum before you purchase a new batch. The catch is if you have a buy limit of 1,000 and hold limit of the same, you can lose your licence simply for buying more bullets before you are completely out."

"Is there any penalty to putting a huge projected ammo count? Is there any law regarding reloading / purchasing reloaded ammunition?"

"I also live in the uk and plan to get a gun before the year is out. Not shotgun though, It will have to be a rifle for me. I really like shooting air rifles and would love to use a proper one.

What part of the uk do you live in, Sekiro? "