284 win neck diameter

[Mt.Boy]

I am having a 284 barrel done that has .190fb and a .317 neck. Looking at either using Winchester or Peterson brass. I know I will have to turn them some. But with a .317 neck what loaded round neck diameter should I be trying to get. Any help would be great thank you !!

 

[Falfan2017]

Most people doing .003-.005 clearance. So that would be anywhere from 307 to 311. Also 190 is pretty short freebore if you want to run the 180+ sized Bullets.

 

[Mt.Boy]

Most people doing .003-.005 clearance. So that would be anywhere from 307 to 311. Also 190 is pretty short freebore if you want to run the 180+ sized Bullets.

Do u think it’s long enough to run 180 hybrids ? Or should I stick with 168

 

[Falfan2017]

Just have to try it and see they should work but they’ll be seated fairly deep

 

[Mt.Boy]

Just have to try it and see they should work but they’ll be seated fairly deep

Is that a 307 to .311 loaded round or before

 

[Falfan2017]

Is that a 307 to .311 loaded round or before

Loaded round would work anywhere from 307 to 311.

so for example if you trim your brass to .013 neck thickness you’re going to have a loaded round of .310. Probably want a .308 or .309 bushing to size them

 

[284winner]

Do u think it’s long enough to run 180 hybrids ? Or should I stick with 168

It'll be close. The 168s will be fine.

 

[284winner]

.220 is the ideal freebore for the 180 hybrids IMO

 

[Mt.Boy]

It'll be close. The 168s will be fine.

Thanks for the info.

 

[Mt.Boy]

I also have the 175 berger elite hunter which is a hybrid to. Just a hair shorter. I thought about trying

 

[rardoin]

On a .317" neck chamber your loaded round should be .313" or less. I found my .284 with unturned Norma and Peterson brass/.319" neck chamber needed .314" or less loaded neck diameter for a bullet to pass freely into a fired case neck.

 

[Mt.Boy]

On a .317" neck chamber your loaded round should be .313" or less. I found my .284 with unturned Norma and Peterson brass/.319" neck chamber needed .314" or less loaded neck diameter for a bullet to pass freely into a fired case neck.

Thanks for the info

 

[Mt.Boy]

I have a A few bench guns built with tight neck chambers. Both of them use a lot less clearance. Is there something different about the 284.

 

[rardoin]

Most agree that it likes a bit of clearance. Too tight will hurt more than a little loose.

 

[Falfan2017]

I have a A few bench guns built with tight neck chambers. Both of them use a lot less clearance. Is there something different about the 284.

I run tighter clearance on my 6dasher and bra but I got a 310 loaded round on my 318 neck 284 and it does fine.

 

[Mt.Boy]

I run tighter clearance on my 6dasher and bra but I got a 310 loaded round on my 318 neck 284 and it does fine.

Ok sounds good. Just curious

 

[Ringostar]

I run .312 loaded round with a .317 chamber, for .005 clearance. I use a .310 bushing in my Whidden sizing die. A .307 loaded round would be .010 clearance, which is getting big imho.

 

[Mt.Boy]

I run .312 loaded round with a .317 chamber, for .005 clearance. I use a .310 bushing in my Whidden sizing die. A .307 loaded round would be .010 clearance, which is getting big imho.

Thank you for the info. That’s what I was figuring to . A .312

 

[1shot]

Most agree that it likes a bit of clearance. Too tight will hurt more than a little loose.

^^^^^^^^^^^^^^ What Robin said.
Lloyd

 

[284winner]

I run .312 loaded round with a .317 chamber, for .005 clearance. I use a .310 bushing in my Whidden sizing die. A .307 loaded round would be .010 clearance, which is getting big imho.

Same here exactly. Those are good numbers. Mine are hunting rifles today so .317 works great. I use to run a 312 chamber but realized reliability wasn't there when used for hunting.