14 March 2018
The type of lube and and how much is used is just as important as good bullet fit. Here I lubed 50 bullets with alox. 25 were lubed in gas check shank area only and 25 were lubed in both lube groove and gas check shank. These will be shot as pictured using 6.5 grains of Titegroup powder and sized .2257. I am sure less lube will be more accurate, but for how many shots?
When I first throated the rifle (.2245 reamer) to accept the LBT style bullet a .225 diameter bullet was too large and would not chamber into throat. Now (500 shots later) the bullets are sized .2257 and will chamber with slight resistance into throat. Talking about erosion...
Bullets were sized and Hornady gas check seated nose first in the Lee die, next bullets were lubed in Lube-A-Matic using .001 oversize die. Alloy is soft.