I just finished up deburring the flash holes on about 140 pcs of Hornady 6.5 Creedmoor brass, and the whole time I was doing it, I was wondering...does this really make a difference? I deburr the flash holes on all my "target shooting" and hunting brass just in case. Once it's been done, it's done, so I don't mind doing it. But have shot some consistently great groups with just sized/trimmed LC .223 brass and PPU .308 brass that I didn't deburr the flash Holes on. So what say you guys? Does it make a difference or no? Is it worth it to you?