Varmint Hunter
Well-Known Member
I've got a semi-custom Rem 40X rifle in 22-243 that I'm going to rebarrel soon. I've always been interested in owning/shooting a 6mm Dasher. The rifle will not be used for competition. I just want an accurate rifle that can shoot small groups @ 400yds-600yds or for ringing steel for fun. I'm also looking for something with looong barrel life.
Fireforming the 6mm BR case in a Dasher chamber apparently shortens the brass notably. Does the excessive space in the chamber create problems; carbon or jacket fouling build up, or other issues?
At the distance I intend to use the rifle; would I just be better off shooting the standard 6mm BR without using an "improved" version?
Then there is the option of chambering for the newer Norma 6mm Dasher brass which has the shoulder moved forward but maintains a long neck with no fireforming necessary. Possibly the best of both worlds. Presumably the long neck will help reduce throat erosion.
What do you guys think??
Fireforming the 6mm BR case in a Dasher chamber apparently shortens the brass notably. Does the excessive space in the chamber create problems; carbon or jacket fouling build up, or other issues?
At the distance I intend to use the rifle; would I just be better off shooting the standard 6mm BR without using an "improved" version?
Then there is the option of chambering for the newer Norma 6mm Dasher brass which has the shoulder moved forward but maintains a long neck with no fireforming necessary. Possibly the best of both worlds. Presumably the long neck will help reduce throat erosion.
What do you guys think??