I haven't been able to get 55 gr. Hornadys to shoot in either my 8" or 9" twist AR's, but Hornady's 60 gr. plain spitzer flat based shot extremely well in both. The 60's are a slightly more expensive than Hornady's basic 55 gr spitzers but are reasonably priced for practice and plinking. There are also good reports on the Hornady 60gr. spitzers as a hunting bullet.
