Best concentricity I've seen

[Alex Wheeler]

Wasnt expecting that. I thought maybe short bullets. My testing never showed concentricity had any effect on groups. I dont even own a concentricity gauge anymore. But I cant argue with actual testing.

 

[mikehotel]

Wasnt expecting that. I thought maybe short bullets. My testing never showed concentricity had any effect on groups. I dont even own a concentricity gauge anymore. But I cant argue with actual testing.

Now we are getting someplace. According to the guys that I shoot with, SD and ES's are a reflection of neck tension. When neck tension a approximately the same, the SD and ES will be low, and there are days when my numbers aren't so good. So back to my original question, about neck turning, and one pass on the press with the Whidden die. I feel that by making two pass on the press,(shoulder bump and LCD) it is giving me twice to opportunity to screw up my brass...yes,no??

 

[Richard Coody]

Now we are getting someplace. According to the guys that I shoot with, SD and ES's are a reflection of neck tension. When neck tension a approximately the same, the SD and ES will be low, and there are days when my numbers aren't so good. So back to my original question, about neck turning, and one pass on the press with the Whidden die. I feel that by making two pass on the press,(shoulder bump and LCD) it is giving me twice to opportunity to screw up my brass...yes,no??

Well i now neck turn. The best indicator of neck tension i have is my hydroseater. I now know the seating pressure that works. I cull the rest. Developing more consistent neck tension is my present goal. I believe better concentricity will come along with it.

 

[fguffey]

what I always thought interesting was the general negative feeling of some on this forum about expander buttons on the decapping assy. As long as the inside neck is lubed, I really don't see a problem with this die.

Old Dood, you gotta have a Widden, I do not have one, and then it has to be explained to most reloaders the expanders does not touch the case when the ram is raised. Reloaders believe the expander pulls the shoulder forward, they believe the pulling of the expander through the neck increases the length of the case from the shoulder to the case head. There was a time I would ask the reloader how would the sizing/expander ball increases the length of the case?

And then there is this other problem; they do not know how much bullet hold the neck has, everything seems complicated for the reloader because they believe the neck has tension. My necks have bullet hold and my cases do not have head space.

F. Guffey

 

[Richard Coody]

Old Dood, you gotta have a Widden, I do not have one, and then it has to be explained to most reloaders the expanders does not touch the case when the ram is raised. Reloaders believe the expander pulls the shoulder forward, they believe the pulling of the expander through the neck increases the length of the case from the shoulder to the case head. There was a time I would ask the reloader how would the sizing/expander ball increases the length of the case?

And then there is this other problem; they do not know how much bullet hold the neck has, everything seems complicated for the reloader because they believe the neck has tension. My necks have bullet hold and my cases do not have head space.

F. Guffey

Lets see. The decapping rod with the expander ball attached pass through the case neck before the case neck even reaches the portion of the die that sizes the neck. It is on the upstroke when the case neck is coming out of the neck sizing portion of the die that the expander ball expands the neck.

As for the semantics difference between neck tension and bullet hold only you know.the.difference.

I sure am sorry your cases have no head space. You must like tight bolt closing.

 

[T-shooter]

Well i now neck turn. The best indicator of neck tension i have is my hydroseater. I now know the seating pressure that works. I cull the rest. Developing more consistent neck tension is my present goal. I believe better concentricity will come along with it.

I didn't know about the Hydroseater. How consistent are your average seating pressures. Do you have very many that are out of your acceptable range? Do you just sit the case on the base and if so, does this cause any runout issues?

 

[Richard Coody]

I didn't know about the Hydroseater. How consistent are your average seating pressures. Do you have very many that are out of your acceptable range? Do you just sit the case on the base and if so, does this cause any runout issues?

I use the 21st century shooting hydro press and wilson in-line seater.

Seating pressure varies wildly. Size cases and let them sit a while and then seat bullets and it will be off the chart. Each sizing after annealing seating effort goes up. Even the days from annealing to size and load changes it. Super clean no carbon in the necks are very inconsistent even using imperial neck lube.

Even when i do everything i can to keep it consistent there are differences. I sort for loads in the 25 psi range. They seem to shoot the best. Less or more and groups open up. Now i am talking from 1s and 2s to 2s and 3s. Most people wouldn't notice.

Trying sizing with a sizing mandrel kit next. See if i can get more consistency.

 

[fguffey]

I sure am sorry your cases have no head space. You must like tight bolt closing.

Richard Cody, I keep telling myself he can not be that stupid, and then? We had a member that called SAAMI, I am sure they were impressed after he listed his pedigree but they did not add case head space to their case drawings.............. and then many members on this forum got all giggly about the Digital Head Space Gage. Not one member on this forum knew the difference between a comparator and a head space gage. And then there were 4,000,000+ rifles made that never required a head space gage when measuring the length of the chamber from the shoulder to the bolt face. There are owners of the rifle that have 3 head space gages for the rifle, they have the go, no and beyond gage.

F. Guffey

 

[Richard Coody]

Richard Cody, I keep telling myself he can not be that stupid, and then? We had a member that called SAAMI, I am sure they were impressed after he listed his pedigree but they did not add case head space to their case drawings.............. and then many members on this forum got all giggly about the Digital Head Space Gage. Not one member on this forum knew the difference between a comparator and a head space gage. And then there were 4,000,000+ rifles made that never required a head space gage when measuring the length of the chamber from the shoulder to the bolt face. There are owners of the rifle that have 3 head space gages for the rifle, they have the go, no and beyond gage.

F. Guffey

So just for giggles what in your world do they call the difference between the length of a sized case from case head to shoulder and the length of the rifles chamber from bolt face to shoulder. You pick the spot on the shoulder to measure but of course it must be the same for both the case shoulder and the chamber shoulder.