Ok so I use Italian size 7.5 to shoot OT and UT at the moment but these sizes are slightly different than English 7.5 so what do people use back in the UK ? Is it worth the effort of getting Italian size 8 for the first tube? Does it even make a any difference ? I have seen some shooting the size 8 in the first barrel but need to know what the experienced trap shooters on here think. I tend to think if you are on the target you will break it ... but the same applies with 24g loads for UT very few use them here but if you are on the target...