Another dumb Question- Bullet seating

thebuckhunter

thebuckhunter

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While I was seating my bullets, I noticed that I had to constantly play with the bullet depth screw on my Lee dead nuts bullet seater. The bullets would seat for an OAL of 2.270" down to 2.255". Is this due to human or die error? I properly seated and set the die in the press acording to the instructions and the depth still varies. Any help would be greatly appreciated. Thanks,

-Jason
 
If you got a loaded round ,place it in the die, lower the ram, screw it down till it touches , your set. If not , and you got a guage, screw it down a little at a time till you measure out a what your after.
Point to remember , if loading Barnes x bullets, a little jump to the lands is recomended. :)
 
How are you measuring the OAL of the cartidge? If you are using lead tipped bullets some of the tips may be slightly deformed. The seating die seats the bullet by pushing on the ogive of the bullet. If you are measuring tip to base, this variation you are seeing could just be caused by deformed lead tips. If you have some about, see if the variation is reduced using a hard point bullet.
 
Chamfer all your cases real good, and that should reduce the amount of efforet required to seat the bullets, and the amount of deformation present.
 
scairns said:
How are you measuring the OAL of the cartidge? If you are using lead tipped bullets some of the tips may be slightly deformed. The seating die seats the bullet by pushing on the ogive of the bullet. If you are measuring tip to base, this variation you are seeing could just be caused by deformed lead tips. If you have some about, see if the variation is reduced using a hard point bullet.
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+1

I had the same issue with my 6mm and found this was the case.
 
Even most HPBT match bullets vary a fair amount in length. In measuring a lot of Sierra 6.5mm 142 gr HPBTMatch bullets, I have seen more than .010" variation from base to tip. This makes for a variable COL, even though the bullet ogive is a consistant distance from the lands. Regards, Eagleye.
 
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