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One complete turn

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20 February 2006, 00:11
Hammer
One complete turn
How much does one complete rotation of the bullet seating stem on a RCBS bullet seating die change the bullet seating depth ?

On a Hornady die ?

Hammer
20 February 2006, 00:55
hivelosity
it depends on the bullet!
20 February 2006, 01:09
ShopCartRacing
Figure it out yourself:

1" Divided by # of TPI on rod.
20 February 2006, 16:27
Chuck White
Hammer
Do like I just did!

Measure (with your caliper) the length of the die, then turn the seating stem either in or out one turn and measure it again! Now, subtract the lower number from the higher!

Mine, for example was a 221 Rem Fireball!
1st measurement 3.216
2nd measurement 3.182
the difference .034
So, the bullet seating depth would change 34/1000 inches!

If you set your die up with a particular bullet, it will change depth exactly the same as the change in the seating stem!


Chuck - Retired USAF- Life Member, NRA & NAHC
20 February 2006, 17:49
Hammer
My calculations show between 35 and 36/1000ths. My skill at measuring is not as refined as yours.

Hammer