6BR Reamer for 500y F-Open

[LVLAaron]

I have an old Remington 722 bench gun that I'd like to screw a prefit 6BR barrel onto for shooting 5/600 yard F Class.

I've had great luck with my FTR barrel from Northland so I asked for their 6br reamer print. (File attached)

I dont know much about 6br but it seems like the freebore is pretty short on this guy?

Thoughts? What weight bullets are best for this reamer?

 

[Terry]

With the very long neck on the 6BR this will not be a problem.

 

[LVLAaron]

Will it work for 105g bullets? I assume I want 1:7 twist?

 

[Terry]

Yes

Most use 1:8 twist.

I have for years. They work well.

 

[arm017]

What bullet are you planning to run?

 

[LVLAaron]

What bullet are you planning to run?

Not sure. I guess I'm asking what's the most heavy bullet I can/should run with that chamber?

 

[Terry]

I have run 95-108's in mine.

No problems.

 

[LVLAaron]

I have run 95-108's in mine.

No problems.

With the shorter FB? .093?

 

[Terry]

No problem. That long neck gives a lot of room.

 

[arm017]

From my own research- always appreciate feedback, if my conclusions are off base here


But in a 6 BR Norma the .93 freebore is on the shorter side of acceptable for heavier bullets.
I think anywhere between .93-.130 would be ok. So I don't think that should hold you back too much

 

[Chris Covell]

I use 115 Berger VLD in my 7.5 twist.

 

[HTSmith]

I shoot 105's in a .060" freebore with 8 twist. Works well. Dial up .030" on your calipers and take a look at how much we are worried about. As others have said the 6BR is very forgiving.

 

[LVLAaron]

Cheers guys. Going to go for the Northland barrel. It's not for a serious gun, just something fun to get one of dads old bench rest guns to the f-class club.

 

[JFrank]

Cheers guys. Going to go for the Northland barrel. It's not for a serious gun, just something fun to get one of dads old bench rest guns to the f-class club.

Criterion 6 br barrels shoot pretty good with a .093 freebore, I run 107 smk also 108 Berger
No worries
J

 

[Thumper]

I use a .094 free bore and run 105 and 108 bergers, the freebore grows fast enough on its own. .094 is a great place to start. All bullets are seated above the neck shoulder junction.