Quote:
Originally Posted by SwampF0X
He said he would assemble my upper for me for a modest $20
Why do I need a case guage? What is a case guage?
swampf0x
|
Have you reloaded other catridges before?
It is a gauge that tells you how to set your resizing dies so they resize the case enough but not excessively which will shorten your case life.
Usually these are based on SAAMI specs and are general.
For 300 Whisper or other custom barrels, you can have the smith cut you a gauge which is actually bored with the same reamer that your barrel is cut with.
This is more of a chamber gauge which is a perfect match for your barrel and almost a necessity when initially forming 300 Whisper brass and resizing after fire forming.
A custom chamber gauge may also have the beginning of your rifling so you can set the OAL of your reloaded rounds to be jammed in the throat, a small distance from the throat, or have a slight jump.
In an AR you will be limited by the magazine length for the OAL so some barrels have a shorter throat which can be a good or bad thing depending on if you are aware of it and know how to utilize it.
Threaded Mode