I know similar topics have been posted in the past, but I still couldn't figure out what caused to the issues I have, I am going to ask again.
I found after I FL size my lapua brass, I got different shoulder bump. e.g for 308win, the range is about to +/-0.001-0.0015. To make it as consistent as possible, sometimes I have to adjust the FL sizing die a bit.
Not sure if this is mainly caused by case lube/wax as mentioned in some of the previous posted thread or my budget caliper needs an upgrade?
I am using Redding Type S FL sizing die with bushing, without expander ball. All the brass gets deprimed, wet tumbled and AMP annealed before FL sizing. I also tried Redding competition shell holder set, but it doesn't seem make much difference.
For seating depth, I am suspecting it is related to inconsistent neck tension, but I am not sure what I missed or did wrong in the brass prep process. My process is FL size the brass with bushing without expander ball, then (trim if necessary) chamfer and debur. I use expander mandrel to open the mouth to preferred neck tension. Before seating, I apply some redding dry neck lube. But I still get about +0.001-2 difference in a batch of 30-50 rounds. Normally use ELD or SMK bullets.
If the difference in my shoulder bump and seating depth are out of normal tolerance range, anything I did wrong or missed in my process? Thanks in advance.
I found after I FL size my lapua brass, I got different shoulder bump. e.g for 308win, the range is about to +/-0.001-0.0015. To make it as consistent as possible, sometimes I have to adjust the FL sizing die a bit.
Not sure if this is mainly caused by case lube/wax as mentioned in some of the previous posted thread or my budget caliper needs an upgrade?
I am using Redding Type S FL sizing die with bushing, without expander ball. All the brass gets deprimed, wet tumbled and AMP annealed before FL sizing. I also tried Redding competition shell holder set, but it doesn't seem make much difference.
For seating depth, I am suspecting it is related to inconsistent neck tension, but I am not sure what I missed or did wrong in the brass prep process. My process is FL size the brass with bushing without expander ball, then (trim if necessary) chamfer and debur. I use expander mandrel to open the mouth to preferred neck tension. Before seating, I apply some redding dry neck lube. But I still get about +0.001-2 difference in a batch of 30-50 rounds. Normally use ELD or SMK bullets.
If the difference in my shoulder bump and seating depth are out of normal tolerance range, anything I did wrong or missed in my process? Thanks in advance.