Thread: 40 meter patterns-advice please

So you are getting a little under half the expected figure for a full choke.
I'm assuming you are using lead there there should be 85 to95 pellets per oz with no 2 a heavy charge of shot say 2oz may get mashed up and spread faster.
The idea of patterning with more open chokes is a good one. I find 3/4 gives me the best results bearing in mind that a lucky single pellet can do the business much further out.