Here's what I use to correct ammo after checking it on the RCBS gauge.
TT-Equipment-Index
The idea, and I believe in it somewhat, is that by modeling the neck you're not disturbing the bullet to neck relationship.
I try to bend things as little as possible once I get a reading under .003 run out I'm happy.
If I correct things using the true tool and RCBS and then check them on the Hornady unit I get near zero run out always. But if I correct things on the Hornady and get near zero run out and then check on the RCBS I can get some crazy bad readings like five to seven thousands run out.... I can't explain why....not always but occasionally.
It's weird there are so many reloaders out there that just swear you got to have good run out but I haven't seen that always have to be the case. Years ago I sorted two boxes of federal Sierra factory 168 match loads for 308 for my buddy on my RCBS.
I sorted them in groups of ammo that were under .003..... from .003 to .006 and over .006. Some of the bad ammo was .011. He shot them at 330 yards in a tight chambered savage factory law enforcement 308. Bottom line was all groups Hovered around 2 to two and a half inches and nothing was different between the best ammo and worst.
One thing you might experiment with on the Hornady gauge is that you can actually push on the case neck instead of the bullet to correct things. I still think you're going to disturb neck tension but it may not be that important and like I said in an earlier post what really matters is what happens on target.
TT-Equipment-Index
The idea, and I believe in it somewhat, is that by modeling the neck you're not disturbing the bullet to neck relationship.
I try to bend things as little as possible once I get a reading under .003 run out I'm happy.
If I correct things using the true tool and RCBS and then check them on the Hornady unit I get near zero run out always. But if I correct things on the Hornady and get near zero run out and then check on the RCBS I can get some crazy bad readings like five to seven thousands run out.... I can't explain why....not always but occasionally.
It's weird there are so many reloaders out there that just swear you got to have good run out but I haven't seen that always have to be the case. Years ago I sorted two boxes of federal Sierra factory 168 match loads for 308 for my buddy on my RCBS.
I sorted them in groups of ammo that were under .003..... from .003 to .006 and over .006. Some of the bad ammo was .011. He shot them at 330 yards in a tight chambered savage factory law enforcement 308. Bottom line was all groups Hovered around 2 to two and a half inches and nothing was different between the best ammo and worst.
One thing you might experiment with on the Hornady gauge is that you can actually push on the case neck instead of the bullet to correct things. I still think you're going to disturb neck tension but it may not be that important and like I said in an earlier post what really matters is what happens on target.
