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Does neck tension affect bullet seating consistency?
- Thread starter MartyK2500
- Start date
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
With Lapua brass, I run 12.5 to 13 thou thick necks, annealed periodically
Whatever comes out the other side of a Lee collet neck die.
Has worked very well for me, so have just kept it simple and work on more important details.
Jerry
Whatever comes out the other side of a Lee collet neck die.
Has worked very well for me, so have just kept it simple and work on more important details.
Jerry
I used Berger 200 20x it may change with bullets that have longer bearing surface
pins were 3075, 307, 3065 and 306...ordered 3055
corresponding bushing to size 001 to 0015 smaller then pin.
Also brought my baseline load, it could only go three ways... better, equal to, or worse. if the results are the last 2, i am staying with current practice fewer steps
Still testing.
Cheers
Trevor
pins were 3075, 307, 3065 and 306...ordered 3055
corresponding bushing to size 001 to 0015 smaller then pin.
Also brought my baseline load, it could only go three ways... better, equal to, or worse. if the results are the last 2, i am staying with current practice fewer steps
Still testing.
Cheers
Trevor
Just a tidbit of an update
With my own personal brass processing method, the 3070’’ mandrel (1.5 neck tension with springback) produced the most constant seating pressure of all on my K&M arbor press with dial.
Better than the 3065’’ and 3075’’.
At the range yesterday, I did not keep the target as I was in a rush with too much people on the line.
3x 5 shot groups at 200M, and they way they printed it is clear they we’re all sub 1/4 minute, new record for me.
At least I got a nice berger 208 LRHT load for this FTR rifle now.
Time to just fireform all remaining unfired brass I have to bring it to 200-250 rounds so that the barrel stops speeding up, find the new load, and bench it until serious ranges reopen
With my own personal brass processing method, the 3070’’ mandrel (1.5 neck tension with springback) produced the most constant seating pressure of all on my K&M arbor press with dial.
Better than the 3065’’ and 3075’’.
At the range yesterday, I did not keep the target as I was in a rush with too much people on the line.
3x 5 shot groups at 200M, and they way they printed it is clear they we’re all sub 1/4 minute, new record for me.
At least I got a nice berger 208 LRHT load for this FTR rifle now.
Time to just fireform all remaining unfired brass I have to bring it to 200-250 rounds so that the barrel stops speeding up, find the new load, and bench it until serious ranges reopen
