New reamer dimenisions?

[bumtownbutch]

I'm wanting to order a match-grade reamer for 204 Ruger. I have sized a case with Redding FL die without setting the shoulder back. How much expansion should I add for neck, shoulder, and head expansion over dimensions I measure on the sized brass?

 

[Dusty Stevens]

You need to order a reamer, have your barrel chambered, then get dies made for your brass. Variances in how the chamber cuts wont let you take the steps you want you gotta go the other way. Call jgs talk to cary and get a min spec reamer made then go from there

 

[bumtownbutch]

I may be wrong, but, if I already have the dies that are sizing the brass to minimal SAAMI or less, as long as I use those dies to size whatever brass, wouldn't it be reasonable to have a chamber sized to fire that sized brass without excessive clearances? And, instead of going to the additional expense of another set of reloading dies custom sized to a generic chamber? As I said, I may be wrong.

 

[expiper]

talk to Kiff (PT&G),,,he makes the resize reamers for Redding dies,,,he know what you need for your chamber,,,,Roger

 

[calgarycanada]

I'm wanting to order a match-grade reamer for 204 Ruger. I have sized a case with Redding FL die without setting the shoulder back. How much expansion should I add for neck, shoulder, and head expansion over dimensions I measure on the sized brass?

You can certainly do that, you don't have to spend money on two reamers or custom dies.
I would spec it
Neck. 0.004" over
Shoulder 0.002" over
Base 0.0005" over
I'm not an expert so this is JMHO
Talk to reamer manufacturers they can give you more accurate info