I have just finished making a test model for a well known big bore maker with a 3 inch diameter, please do not ask, I will NOT be making any more. But I thought I would share this result with the members of AGN because I was totally surprised by it. Just for kicks I tried the huge can on my 22 caliber Sumatra and Career, both are extremely loud air guns, my expectations were to still get a fair pop from it because of the very large bore hole, absolutely nothing, on both guns all I could hear was the hammer hitting the valve, I was totally surprised by this having such a large bore hole and no pellet being fired. I thought I would share this with those of you who like the large cans, this is about as large as they get, now I need to wait for the feedback on how it works on the 45 caliber gun it was made for, Neil.