02-19-2014, 06:51 PM
If your wondering if your chamber has a throat issue you can put a factory 123 A-max or SST in the barrel and push it in by hand.
The shoulder of the brass will only let the case go so far in.
Factory brass usually has around 8 to 10 thou headspace.
I set my fired handloads to have 4 thou headspace.
If you push a round in and it falls out the barrel when turned upwards it's probably good enough.
If you can manually cycle the rounds by hand with no resistance that is usually good.
The shoulder of the brass will only let the case go so far in.
Factory brass usually has around 8 to 10 thou headspace.
I set my fired handloads to have 4 thou headspace.
If you push a round in and it falls out the barrel when turned upwards it's probably good enough.
If you can manually cycle the rounds by hand with no resistance that is usually good.