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What 6 dasher reamer for alpha brass?

Duramax6

Private
Minuteman
Feb 12, 2019
57
9
I shoot 6 dasher and had a rifle built back late last year. My wife wants to shoot a little and for the sake of reloading 2 different calibers, I was going to throw another barrel on a squared up rem 700 action. I would like to know what reamer/freebore is standard, needed for Alpha brass. I’m having a local smith spin the barrel up and he hasn’t done any 6 dasher barrels so he going to just rent the reamer. Figured the easiest thing to do was to ask the smith that chambered mine what he used but, never could get a straight answer. Any help would be appreciated
 

Zbizzle911

Private
Minuteman
Feb 16, 2020
16
10
I've seen .274 & .275 necks on reamers for Alpha brass. I'm going to order a reamer soon and going to probably go with .274 neck and a .140 freebore.
 

FisherT&C

Barrel Work for Bolt Actions
Full Member
Minuteman
  • Jan 1, 2020
    331
    204
    Montana
    I have a .273 neck for Alpha Brass and a .275 neck for Peterson. Both .120 freebore.