Throat for 6BRX

[Dubya]

Using Berger 105 VLDs or Hunting, what throat (free bore) would be good?

 

[DCRYDER]

My reamer has .099" which puts the bullet very close if not on the neck/shoulder junction with a 105 jammed .010". I think I would go with at least .115" to .120" next time.

 

[savageboy]

I think mine is .114- set for 105 VLDs

 

[Dubya]

Thanks for the replies all, appreciate it. Looks like will go some where in the 0.120s .

Gary (aka dubya)

 

[bozo699]

I had Kiff grind mine at .104 free bore for 107's I wished I had went with about .114
Wayne.

 

[Scott Harris]

Just went through this same process and ordered .125" freebore on my reamer for 105-108 bullets.

 

[Dubya]

Scotharr, how did that .125 work out for you?

savageboy, same question on the .114?

 

[tclaunch]

I have a Mike Davis BRX chambered rifle. I also had Kiff grind my own reamer with a .140" FB the difference between the 2 chambers is within .010" seating the same bullet to the lands.

 

[Dubya]

I have a Mike Davis BRX chambered rifle. I also had Kiff grind my own reamer with a .140" FB the difference between the 2 chambers is within .010" seating the same bullet to the lands.

Is the Davis chambered rifle a .114 throat and in your opinion which shoots best??
Gary.

 

[tclaunch]

This is his retired reamer he called "Old Reliable" and it had 17 world records to its credit so we know how well it shot. I`m thinking he said it was purchased used, and believed to have a .125" freebore. I was proud going slightly off his recommendations with the .140" and it being so close to his. I have both chamberings to compare.

 

[Dubya]

tclaunch,
how is that .140 doing compared to the .125?
I am looking at the bottom the boat tail of the bullet being right at the shoulder/ body junction and think I may need to go to about .140.

Gary.

 

[tclaunch]

I can tell no difference in group sizes. I wanted more options on bullets not seated into the case past the neck shoulder. I have felt uneven seating pressure when that happens. I began annealing 3 years ago, and that helped stop all of that so it is not as important to me as past times. I`d assemble a dummy round with .005" neck tension so it will stay put and send a note with the OAL written down as well to insure the case made it there as sent, and send this to Henriksen, JGS, or PT&G