I have a bps 10gauge and I have rhino choke tube and shoot nitro shells through it at 40 yrds it has over 300 pellets in a 20inch circle. the most devastating pattern I have ever seen. I shot a kicks through it and a primos jellyhead but the rhino just blew them away. haven't tried a jebs or sumtoy, hope to get them soon, but not sure if you can improve what I have already. but you never know!!