I have 8 rifles. Only one of them has what might be considered a fast twist barrel. It is a 260 Rem with a 1 in 8 twist. It shoots any bullet from 95 grains to 140 under 0.5 MOA. All my other rifles have “standard” twists. I have found shorter bullets that will shoot 0.5 MOA in most of them but none of them will do that with a long for caliber bullet. Seems like a pattern. The problem with standard length bullets is that the BCs suck. It occurred to me that maybe you need a twist that will “over stabilize” a bullet to get it to shoot really well though I have heard it stated that the faster a bullet spins, the more detrimental “imperfections” in the bullet will be to accuracy. I’m beginning to suspect that sentiment could be more folklore than fact however. If I’m barking up the wrong tree here it should be fairly obvious – there will be cases where guys have good shooting loads using long for caliber bullets in barrels that just meet the twist requirements for the bullet. Let me provide an example. The 338 cal 280 grain Barnes LRX is a long bullet and the box says it requires a 1 in 10 twist which is standard for that caliber. Is there anyone out there that has this bullet shooting 0.5 MOA or better in a 10 twist barrel? How about the 200 grain 30 cal LRX or 168 grain 7mm LRX? To be clear, I’m not talking about one good 3-shot group but rather multiple 4 or even 5-shot groups under 0.5 MOA. As I said one of my 8 rifles will do that with a long bullet and it has the fastest twist. Oddly my next best rifle is also my next fastest twist, a 1 in 9 twist chambered in 7mm WSM. It will stack 180 Bergers into 0.75 MOA. The rest of the rifles are pretty much 1 MOA rifles with the longer bullets though most have shot groups under 0.5 MOA with standard or short bullets. I'm looking for a couple of examples where long bullets shoot good in standard twist barrels and then I can then go worry about something else. Otherwise I may have to starting ordering some faster twist barrels. Thanks.