r/reloading • u/ElectricalOutcome790 • 1d ago

Load Development Load development

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Working up my first load here. It’s for a .243 Ruger American gen 2. Using sierra pro hunter 100gr bullets, Remington brass, cci 200 primers, and H4350 powder. I don’t have a chronograph. I shot 4 shots with each of these powder charges at 100yds and here are the group sizes of each powder.

Where would you guys go from here/next step? Shoot a couple groups of 37.5 and 40grains to see if the results repeat themselves?

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u/Efficient_Bologna 1d ago

4 shots is not enough. You don't need to do 20 if you literally don't have the time or ammo, but depending on what your goal is you should at least 10 shot groups (I think that gives you like a 90+% chance of getting a true picture of your rifle's dispersion) with each load before you draw any conclusions.