I have loaded 1000s w fiocchi primers, 147g blue bullets fn 1.14 col running a light load for steel challenge..no issues to speak of. I’ve used them with 147g -sierra vcrowns, sports masters and horndady xtp.. 3.1 g of Titegroup and 4.8 and 5.0g of hs6 ranging in COL 1.1 for hornady up to 1.13 w sierras all for bowling pin matches and had no issues