you only need a single projectile......as a test weight...it matters not a huge deal if its supposed to be 50 grns and is 50.005 or some such,you will never notice it...in fact if its 50.5grns it still doesnt matter if all you use it for is to check scales ARE THE SAME AS LAST TIME YOU USED THEM..... eg when the projectile is in pan,set wee sprung screw till balance beam SAYS 50 grns...... and place projectile back in special place till next session.....next time do same again...you starting out with scales zeroed the same way so your powder weights will all be the same....if they a 10th of a grai neither way from what you think...it matters not AS LONG AS THE SAME EACH TIME......
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