Got to thinking about this thing of FL sizing new straight wall pistol brass and started to wonder why I do it. I guess I’ve always tried to accomplish uniform bullet tension from round to round but after measuring a few I wonder if it is worth working the brass.
New starline 10mm brass measures .4195 OD.
Sizing takes them down to .4165 OD.
Expanding (not flaring) takes them up to .4180 OD
We are talking .0015 of an inch here and with either method the bullet OD is still greater than the brass ID so does that little bit of difference in tension between expanded and not expanded have any effect on anything? BTW I have no feeding problems!
What is your practice and why.
Appreciate your input. Thanks in advance.
New starline 10mm brass measures .4195 OD.
Sizing takes them down to .4165 OD.
Expanding (not flaring) takes them up to .4180 OD
We are talking .0015 of an inch here and with either method the bullet OD is still greater than the brass ID so does that little bit of difference in tension between expanded and not expanded have any effect on anything? BTW I have no feeding problems!
What is your practice and why.
Appreciate your input. Thanks in advance.