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Why does my 550 dillon drop powder?

I Have a Dillon RL 550B. I use 10793 Dillon carbide die set for 308 Win. My problem is: when I start pushing  back the handle and 308 brass comes down,some powder drops out not going in the cartridge. Because of this I can´t get accurate amount of powder. What need´s to be checked again.

If I adjust 550B to give me 45grains of Vihtavuori N140 powder.Then I´ll take 10 pull`s I dont get 450 grains. I Get something in between 452-448 grains. How accurate should Dillon automatic powder measure be?

 

G: Ville

 

 Cycle the handle more slowly in the downward direction when the powder is being dropped. It should take at least one full second to move the powder bar from one end to the other. Next, be sure the powder bar goes all the way over to the far side at the end of the downstroke of the handle. With extruded powder, your drop should be within +/- .2-.3 grain.

Is it an extruded powder?

looks like pencil lead,i.e.imr 4064,sometimes a powder trikler is necessary with rifle cases. it's acording to how precise your wanting to be,
       please don't be offended but, most reloading manuals have detailed information on all aspects of metallic cartrigde reloading.  i recommend every one read the front section of the manual,and it all so a good idea to have the manual for the bullet manufacturer you chose to use, if you only want one then i recommend lymans most recent edition. reading about all the stuff in the book is very informative. i must confess that i reloaded for 2-3 years doing what a friend had taught me to do. by reading the lyman manual i was able to shrink group sizesand make the process more efficent. good luck

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