I've read (on the internet) that "over stabilization" of a lighter bullet due to the faster twist barrels can have a negative affect on accuracy.
The theory, if I remember it correctly, is that the higher rpm the bullet gets from the faster twist has a negative effect on any bullets that aren't "perfect". Perfect? It meant a bullet that wasn't concentric with jacket being exactly the same thickness all the way around and lead core that was round and centered in a perfect jacket. The idea was increased bullet rpm would result in increased wobble/larger groups.
I can, from personal experience, tell you that some "varmint" bullets should not be shot in a 1 in 9" twist barrel (or 1 in 8" or 1 in 7"). I have seen my reloads that worked great in my Rem. M700 varmint special (1 turn in 12") not even make it to 100 yds. in the Mini 14 (1 turn in 9"). You could see a vapor trail spiraling behind the bullet all the way to the target. Sometimes the vapor trail would stop short of the 100 yd. target (the shooter wouldn't see it but the spotter would) and I'd only have 4 bullets on the target, not 5, or 8 or 9, not 10. Sierra and Hornady both (used to anyway) make thin/fragile jacketed bullets for varmint hunting. The idea was that the thin jacketed bullets would work better in the older, slower velocity rifles like the .22 Hornet by increasing expansion at lower velocities. The reloading manuals would state, in the data section for those bullets, they should not be shot in a 1 turn in 9" barrel (in the early 80's 1 turn in 9" was very new in the civilian world).
With 45 and 50 grain bullets my best groups have been in the 1 turn in 12" barreled Rem. M700 .223 varmint special and a special AR15 I built with a 1 turn in 10" bull barrel/free floated/24" barrel. This one is downright scary up close with H335 and 50 grain Hornady varmint bullets (flat based spitzer).