LoopSoosStroop
08-23-2013, 04:45 AM
Ok, I shoot .303 Brit and have recently acquired a 160 gr Lee TL mold. Drops at about .312-.313.
My first loads were with neck re-sized cases, flared, bullet seated and flare closed. I'm sure that this procedure sizes the bullet down, as there is a LOT of neck tension wen seating the bullets. I pulled one and the TL grooves mic at .311.
Now, the only alternative is to leave the cases un-sized. But then the boolits sit very loose, and I have to crimp with the Lee seater die to keep them in place.
Questions:
Will this crimp not damage the boolit and remove the GC when the shot is fired? The brass case rim is much harder than the lead, and I'm thinking that it will swage the boolit down anyway.
Same problem with powder coated and paper patched boolits, how do I get neck tension (so that I get a consistent COL when chambering) without crimping excessively?
This really is an art getting these things to go out straight.
I've loaded a few different loads up for this weekend using different techniques, will post results here.
My first loads were with neck re-sized cases, flared, bullet seated and flare closed. I'm sure that this procedure sizes the bullet down, as there is a LOT of neck tension wen seating the bullets. I pulled one and the TL grooves mic at .311.
Now, the only alternative is to leave the cases un-sized. But then the boolits sit very loose, and I have to crimp with the Lee seater die to keep them in place.
Questions:
Will this crimp not damage the boolit and remove the GC when the shot is fired? The brass case rim is much harder than the lead, and I'm thinking that it will swage the boolit down anyway.
Same problem with powder coated and paper patched boolits, how do I get neck tension (so that I get a consistent COL when chambering) without crimping excessively?
This really is an art getting these things to go out straight.
I've loaded a few different loads up for this weekend using different techniques, will post results here.