Checking OAL

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chasep255

New member
I was reloading .40 S&W today. I was seating to a OAL between 1.135'' and 1.125''. I also check the length of each cartridge after seating with calipers to make sure it is not too much. I have two questions...

How often do you check cartridges for the correct COL? Do I have to check every round or is checking once every 5 sufficient?

How precisely do you seat the bullet? I normally get around +0.005''. Is this too much?
 
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Unclenick

Staff
Nope. You're good to go. Even commercial ammo can vary that much and a lot of military ammo does, too.

You'll find that because bullets compress the air in a case, the lubricated lead ones can sometimes be pushed back out a little by that air, so you don't want much delay between seating and crimping these.
 
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