Chamber casting

[EasyShooter]

When reaming a chamber after I get around an inch deep I many times get most metal shavings on one side of the reamer. I do use a floating reamer holder and have checked tail stock alignment and it comes out good but I still worry that something may be off and the chamber could be getting reamed too big. Just finished reaming a 6mm creedmoor and did a chamber casting with cerosafe. I am measuring .4723” at the base of the casting about a 40 minutes after casting was made. Hornady reload book gives a brass dimension of .473” diameter. I guess I am okay. Am I doing this right? How big of a diameter is too big when you measure a chamber cast.

 

[paperpuncher]

Compare the casting to the reamer that cut the chamber not to a dimension that is published. The chamber should match the reamer if your machining is sound

 

[tobnpr]

many times get most metal shavings on one side of the reamer.

PTG reamers?

 

[EasyShooter]

Yep PTG. Filings are always even until I get deeper into the chamber.

 

[LVLAaron]

Yep PTG. Filings are always even until I get deeper into the chamber.

I'm new at chambering, but I'm noticing the same thing. PTG reamers load up on one flute.. Manson / JGS reamers dont.

 

[tobnpr]

^^^
This is why I buy reamers from Manson.
I was too green to know any different a decade ago, that cutting on one or two flutes wasn't "normal".

 

[DaveTooley]

HSS from Manson
Carbide from JGS