neck clearance best practice?

[wolfman]

I have three rifles with necks tight enough to require that I turn necks. I didn't chamber them this way because I wanted a tight neck, but rather they were the reamers availible at the time I wanted the chambers cut. One rifle is a 6.5 Saum hunting rifle. I'm using R-P .300 SAUM cases to start with, so there's a fair amount of work to do here. As this is a 8.5lb hunting rifle, and won't shoot many groups once load development is complete, I'm guessing a bit more, rather than less clearance is the best idea? Say 0.004-5"?

The other two rifles are a .22 br with .250" neck, and a 6br with ,268" neck. These are range toys, so I'm thinking 0.003" is about right?

 

[bozo699]

I’d say your about right, if it were me I might try .002 on you br rifles you can always take more but it’s hard to put back once removed lol
Wayne

 

[joshb]

I like 3-4 thou. I’m probably being too careful and I don’t shoot competitions, but I like a little more clearance.

 

[Walt Krafft]

My "no turn" 6BR has a 0.272 neck. My 22BR has a 0.254 neck.

 

[bozo699]

I like 3-4 thou. I’m probably being too careful and I don’t shoot competitions, but I like a little more clearance.

I agree Josh, I use to compete with .002 but most of my files like .003-.004 but a do still have a couple that like .002
Wayne

 

[TAJ45]

Iirc, D. Tubb likes .002" per side.

 

[lngrnge]

I use .002 on my 6.5 284. 292 neck, I turn them to 290. I have never had a problem. But I clean about every 5 rds. I dont have to size them at all. New primer powder and seat a bullet with the wilson die.
It has.001 neck tension. I only reload the brass 5x. It takes a lot of work to prepare brass for that gun.

 

[AlNyhus]

For a hunting gun that's fed from the magazine, .004-.005 is a good figure.

Good shootin'. -Al

 

[wolfman]

thanks gents.

 

[jr600yd]

I think it pertains to what the gun likes as much as what your using it for. My F Class 284 shoots best with .003-.004, my 6BRX likes .002 my hunting rifles I try to keep around .003-.005.

 

[bozo699]

I use .002 on my 6.5 284. 292 neck, I turn them to 290. I have never had a problem. But I clean about every 5 rds. I dont have to size them at all. New primer powder and seat a bullet with the wilson die.
It has.001 neck tension. I only reload the brass 5x. It takes a lot of work to prepare brass for that gun.

Ingrnge,
I’m sorry but I’m having trouble following your math?.... your giving yourself.002 clearance and still have neck tension enough on fired brass to re-seat a bullet without sizing?.... I remember back in the ppc days with a .0005 clearance being able to do that however I found better accuracy when I gave myself more clearance
Wayne

 

[lngrnge]

Ingrnge,
I’m sorry but I’m having trouble following your math?.... your giving yourself.002 clearance and still have neck tension enough on fired brass to re-seat a bullet without sizing?.... I remember back in the ppc days with a .0005 clearance being able to do that however I found better accuracy when I gave myself more clearance
Wayne

I use pretty conservative loads. .001 a side is enough that the brass does not expand much. I have noticed after a few firings the necks get a bit thicker. ( Was told the brass flows forward??) I measure with mics and gauge pins. I measured the od after 5 shots. .0007 bigger, which is why I only use the brass 5x. Id is still .2635 but if you cut the neck again it has no tension. (Pull the bullet with your fingers)
I dont know if varmit al still has it posted, I learned how to make the no resize necks from his research.