Bullet Seating Depth 7mm STW
okay I am trying to develop a load for my STW and can't quiet figure out what the seating depth should be. I am shooting 160 grain accubonds in a custom 700 action.
Here is my process:
1. make sure the bullet will slide into the case with enough pressure to keep it in place but still be able to slide it in and out.
2. push the bullet in just past the boat tails and chamber the round
3. Pull the round and measure the overall length.
I used 5 different cases and 2 different bullets and these are the numbers I came up with.
For an average of 3.810 at the lands. if i subtract .02" than that give me 3.790 at .020" off the lands.
The Nosler reloading manual says they that the SAAMI cartridge length is max 3.600" Could I really be that much larger then the SAAMI cartridge? Does this sound right?
Last edited by rb85cj7; 04-06-2009 at 06:31 PM.