Getting back to 9mm

Mitty38

Well-Known Member
I have a tendency to find Red Dot at estate sales. A lot of old time shotgunners around here.
Seems like over the last 80 years it has not changed much, if at all. I have loaded Red Dot from the 40's all the way to today's stuff in my 357 with virtually no difference in performance. As long as it has not gone sticky or clumped Up I use it. Never had an issue.
I do not mix lots however.
I have not taken stock lately but My kid, or someone will be shooting with it long after I am gone.
 

Mitty38

Well-Known Member
Took my barrel and the slug down to the local gun shop this morning. He measured both barrel and slug and affirmed my measurement of . 3555 across the lands.

Across the lands of the barrel (bore diameter) or across the grooves of the barrel from a slug driven through the barrel (groove diameter)?
Sorry my technical terms are lacking. And sometimes interpose.
The largest diameter across the rifeling marks on the bullet and the grooves that are cut inside the barrel.
 

Mitty38

Well-Known Member
So the grooves are .3555 and the lands or bore is.347. is that better;)
Seriously, thanks for the correction I can be quite shatterpated at times, thus my tag.
 

Tomme boy

Well-Known Member
I have started to size my 9mm bullets a couple of times now. Dang things like to grow a little and lock up my guns. So now I size after powder coating and then one more time after at least a month. I have not had any problems since doing this. The other reason for this is mixed brass that I run into. Some are thicker and that can lead to sticking in the chamber.

If you don't size after powder coating you might run into this.