yep
If I trim/chamfer/debur then run the cases through corn cob, I don't. If I trim my bolt stuff and don't use corn cob, I do. I have a nylon 45 cal brush I run in and out to make sure no burs are left
yes.
I anneal every time also but you did not ask about that.
Some of my Pistol cases do not get brushed.
I anneal every time also but you did not ask about that.
Some of my Pistol cases do not get brushed.
I don’t. Should I?
Maybe for rifle stuff seeking maximum consistency. Pistol stuff? Nah
Maybe for rifle stuff seeking maximum consistency. Pistol stuff? Nah
If I shot the ammo and picked it up. No! If it was "range finds" then Yes! as it may have mud , insects or other trash inside.
I looked at what many different benchrest shooters do in the brass prep area.
I read an article where a guy brushed the necks inside with a worn bore brush and 0000 steel wool and also had a plug of that wool in a socket and after trimming and chamfering the case it got ran into that spinning socket to slick it all up.
He said accuracy improved.
I was kind of new to reloading and was searching for any extra edge.
I did notice the bullets after I seated them would leave a bit of copper colored sparkles of gilding metal around the mouth of the brass sometimes.
I found a VLD chamfer helped that out and I decided to brush necks at the same time.
What I noticed is no more copper sparklies.
I also noticed my seating pressures were more consistent.
I was measuring Neck ID at the time with my dial calipers inserted into the case.
I thought HHHMMM If I spin this case while measuring I can feel the surface roughness.
SO I felt surface roughness of the case necks after cleaning and they were very rough.
I decided to brush the neck and feel again and was rewarded with a much smoother feel while spinning the case with my fingers and measuring with the calipers.
I thought smoother neck ID should treat my sizing stem much nicer.
It did and I then checked neck friction after sizing and then brushed it and checked again.
It is an eye opener.
Along those same thoughts I was expanding pistol cases for cast bullets and noticed that copper colored sparkle stuff after flaring the case mouth.
I removed the flaring stem from the die and noticed it had machined lines in it so It got polished to a super chrome finish.
Slicker than water on ice.
I no longer got any copper sparkles on my case mouths after flaring.
Now I ended up taking a Tavia mini valve spring pressure tester and placing my case with bullet on it and seating the bullet in my press and watch seating forces.
I did change the gauge to a smaller numerical scale so I could really see each pound of force needed.
I will leave a video for you to watch and you can see how much initial force is exerted and how much force to just continue to seat a bullet and if you watch the entire video you will see one bullet being seated and pressures jumping around.
Brush the necks and use a VLD chamfer and eliminate the jumping around and it will also aid in initial starting force.
Here is the video.
Now i took it even farther and wondered if seating forces really mattered.
Would different seating forces result in different pull forces once the bullet was in all the way.
I drilled a hole sideways through a bullet above where it was in the case and then seated it.
I then took a piece of wire and ran through the hole and clamped the base of the case in a vise.
I took my pressure gauge and ran the wire around it so when i tried to pull the bullet from the case it would compress the anvil in the gauge and give me a reading.
I found if it took 80 psi to seat it also took 80 psi to pull and 40 psi to seat took 40 psi to pull.
Obsess much? I see it as eliminating every variable that you possibly can and if you miss a target it was the shooter most likely.
I read an article where a guy brushed the necks inside with a worn bore brush and 0000 steel wool and also had a plug of that wool in a socket and after trimming and chamfering the case it got ran into that spinning socket to slick it all up.
He said accuracy improved.
I was kind of new to reloading and was searching for any extra edge.
I did notice the bullets after I seated them would leave a bit of copper colored sparkles of gilding metal around the mouth of the brass sometimes.
I found a VLD chamfer helped that out and I decided to brush necks at the same time.
What I noticed is no more copper sparklies.
I also noticed my seating pressures were more consistent.
I was measuring Neck ID at the time with my dial calipers inserted into the case.
I thought HHHMMM If I spin this case while measuring I can feel the surface roughness.
SO I felt surface roughness of the case necks after cleaning and they were very rough.
I decided to brush the neck and feel again and was rewarded with a much smoother feel while spinning the case with my fingers and measuring with the calipers.
I thought smoother neck ID should treat my sizing stem much nicer.
It did and I then checked neck friction after sizing and then brushed it and checked again.
It is an eye opener.
Along those same thoughts I was expanding pistol cases for cast bullets and noticed that copper colored sparkle stuff after flaring the case mouth.
I removed the flaring stem from the die and noticed it had machined lines in it so It got polished to a super chrome finish.
Slicker than water on ice.
I no longer got any copper sparkles on my case mouths after flaring.
Now I ended up taking a Tavia mini valve spring pressure tester and placing my case with bullet on it and seating the bullet in my press and watch seating forces.
I did change the gauge to a smaller numerical scale so I could really see each pound of force needed.
I will leave a video for you to watch and you can see how much initial force is exerted and how much force to just continue to seat a bullet and if you watch the entire video you will see one bullet being seated and pressures jumping around.
Brush the necks and use a VLD chamfer and eliminate the jumping around and it will also aid in initial starting force.
Here is the video.
Now i took it even farther and wondered if seating forces really mattered.
Would different seating forces result in different pull forces once the bullet was in all the way.
I drilled a hole sideways through a bullet above where it was in the case and then seated it.
I then took a piece of wire and ran through the hole and clamped the base of the case in a vise.
I took my pressure gauge and ran the wire around it so when i tried to pull the bullet from the case it would compress the anvil in the gauge and give me a reading.
I found if it took 80 psi to seat it also took 80 psi to pull and 40 psi to seat took 40 psi to pull.
Obsess much? I see it as eliminating every variable that you possibly can and if you miss a target it was the shooter most likely.
