Bullet seating depth??

[NorCalMikie]

I want/need another barrel for a 6BR build. The problem is, I can't decide on a throat/freebore length. Some of the suggestions are .075" & .080". That seems to be a common throat length.
I plan on not going over 80gr. weight bullets.
I am working with the Nosler 80gr. Sp.,BT)
My question is, " How much bullet do I want to extend into the shoulder area"? 55s are out of the question as far as a "jam" goes.
Seems like I can't get a "good" measurement on my Shilen freebore. Long!! Maybe .210?? Still shoots good!,Go figure)
I figure I will probably go with a "dummy Round" for the actual fitting.
Any and all suggestions and opinions are appreciated. And thanks in advance! Mike.

 

[Preacher]

I would set the bullet I plan to use right at the base of the neck/shoulder junction and figure how close I want to be to the lands from that. I would probably set it up,reamer)so I was about .025 off the rifling at that point, and then move it away from the neck to get into the rifling if thats what it needed to really shoot.

 

[NorCalMikie]

Preacher: The opinions I have seen so far is that a "Jam" seems to work best as far as accuracy and keeping the pressure signs off the brass and actions. I figure if I go "short" on the throat, I will still be able to "jam" the bullets after about 1000 rounds and still have a good bite in the case neck.
Seems like my Shilen barrel has the throat going away sooner than I had expected. Still got a good neck bite and accuracy,with the heavier bullets) but the way I burn ammo I'am not too sure how long it will last.
Just thinking/planning ahead! And thanks for your input. Mike.