I am kind of new to reloading. Up to now I have been reloading pistol ammo for plinking. I started with a single stage lee and then I bought a Loadmaster (that is a whole different thread:banghead but today I decided to start developing a load for my Glock21 just to get used to the process. Before I just picked a middle of the road load for the 45 ACP and ran with it.
I am using a MTM mini digial scale and it is having varitions around 0.1 grains and it is driving me nuts. I would weigh a charge at 4.9, tricke a few grains of powder and it would jump to 5.1 or I would weigh a charge at 5.1, lift the pan and powder, set it back again to weigh it and would read 5.0. I am starting to think that even though the scale might read up to tenths of a grain, it is not sensitive enough to consistently measure 1/10's.
My second irritation today is with my RCBS seating/crimping die. I set it to 1.275 inches, measure my bullet and be very happy. Seat a second bullet and it would be 1.276, the next one 1.278, the next one 1.275 all without touching the die and taking the stroke of the press all the way up and trying to use the same amount of pressur. The first question is if a variation of 0.003 inches in cartridge OAL would make any difference in any situation? Is the press not consistent enough or does the die have some play somewhere. I saw some "match" dies with a micrometer, so I am assuming that those are built with much tighter tolearances than the regular ones.
Thanks guys
I am using a MTM mini digial scale and it is having varitions around 0.1 grains and it is driving me nuts. I would weigh a charge at 4.9, tricke a few grains of powder and it would jump to 5.1 or I would weigh a charge at 5.1, lift the pan and powder, set it back again to weigh it and would read 5.0. I am starting to think that even though the scale might read up to tenths of a grain, it is not sensitive enough to consistently measure 1/10's.
My second irritation today is with my RCBS seating/crimping die. I set it to 1.275 inches, measure my bullet and be very happy. Seat a second bullet and it would be 1.276, the next one 1.278, the next one 1.275 all without touching the die and taking the stroke of the press all the way up and trying to use the same amount of pressur. The first question is if a variation of 0.003 inches in cartridge OAL would make any difference in any situation? Is the press not consistent enough or does the die have some play somewhere. I saw some "match" dies with a micrometer, so I am assuming that those are built with much tighter tolearances than the regular ones.
Thanks guys