Thread: 243 win Superformance and 90 grain ELD-X

Originally Posted by Kelton

+1 Superformance loads are probably better worked up in summer if you want to dable around that top end enjector swipe at these temps could be blowing primers out in summer

I use superformance. All load development rounds I put in my truck with climate control on 30 degrees and leave them in there for at least an hour before taking them out and firing one by one. The chrony data is not a hell of a lot different between the warmed up rounds and shooting them on a cold night/morning, around 40fps which makes bugger all difference out to 243 ranges anyhow