Thread: Load development 22 ARC and dispersion measurement

Started some load development for the 22 ARC.

I'm fortunate to have a crazy accurate 6.5x55 but this gave me some fairly high expectations for my ARC build. Initial firings of the factory 62g, 75g and 88g were a bit mixed - or perhaps my expectations just too high.

Got caught up in all the ladder test, statistics, "groups are too small" and quality postings by a certain @gimp. This shifted my approach to loading up 10 rounds with a couple of powders a bit below max charge with projectiles I want to use to hunt with and shooting them.

I used Gordon's reloading tool coupled with Hornady and Sierra published reloading data to guide what those powder charges would be. Then it became a case of, so how do we measure performance of these loads? With ES of 3-5 shot groups is cast into history books spent far too much time mucking about with spreadsheets.

Long story short - here is a bit of a summary of a few loads I've done. I'm inclined to think 28.5gr Varget + 80gr ELD-X and go hunting.