That pretty much sums it up. How many 3 or 5 shot groups should you take to test a load? I was thinking 2-4 five shot groups so load basically boxes of 20.
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How many rounds to test a load
- Thread starter bwsmith
- Start date
I voted for four 5-shot groups. For my handguns loads (revolvers), I generally make 24 rounds for four 6-shot groups on a new load.
I'm the "other" guy so far. It varies at to the type of firearm and it's application. I'm assumimg we are accuracy testing. I usually shoot a series of 3 shot groups from a hunting rifle. Relying on cold barrel first shot consistency. I do the same on a target/varmint rifle with the exception that I shoot 5 shot groups with it. Since I have to go to a range now, I usually load a full box of 50 handgun rounds. I shoot in groups of 5 with autoloaders, I go ahead and fill the cylinder on a revolver. AR's and similar rifles, usually get the 5 shot test. When I have time now, I take my chronograph with me. It is a great tool. I look for consistent velocities with as low of deviation as possible, however I have had some loads with higher SD's shoot better in some apps. It ain't an exact science?
X2 . I have the luxury of being able to load pistol round and walk out my back door and test. I do 5 at a time. My rifles I usually do either 3 or 5 shot groups working up loads. Usually 3.
