Quote Originally Posted by fredj338 View Post
Where did you get your data? 4.3gr of Unique is pretty light load for 115gr bullets. Speer manual is quite a bit higher. I typically run 5gr under 124gr. Yes you need a chrono.
https://reloadingdata.speer.com/down...__115_rev1.pdf
Correction, Fred. I got ahead of myself and misspoke(typed). It's 4.3gr of Red Dot under the 115gr FMJ. I think the max load data I have is 4.5gr of Red Dot going off of memory. It fills the case quite nicely, with the base of the bullet "tamping down" the powder just a bit. Red Dot is quite a fluffy powder... However, I have found OAL to be quite picky with this load. I get better accuracy in pistols if I seat out to 1.140-1.145, but this is simply too long for my AR9 and several of my pistols - hitting the rifling when chambered. An OAL of 1.100 fits in everything, but is noticeably a more stout load. And is as high as I want to push the threshold with Red Dot.