03-14-2014, 01:14 PM
Kikn Wrote:Just started on my first reloads
Lilja - 319 barrel 1/8 twist
bullets-- Hornady 123SST
Coal 1.518 +/- .002
OAL 123SST -- 2.27/-.005
OAL 123 CC -- 2.26 /-.005
I finally got time to measure my COAL on about 7 projectiles with 4 different barrel manufactures. The Hornady SST 123gr in my Lilja read 1.768 which is more in line with Cory's #'s.
The question I have is if your loading these to 1.518, is that considered a lot of jump to the lands? Will these barrels be as accurate with that much jump?
When measuring these projectiles for the Lilja Barrel the cannelure is well forward of the case end so it seems as if they will need set backward like your doing. I also noticed the 2nd cannelure on the Barnes TTSX and TSX 120gr pills is exposed. Is that an issue?
Will there be an issue of too much jump or free bore because the Lilja has a + difference in COAL of .009 to .078 than my AA barrel and .059 to .108 than my Liberty depending on projectiles. On average of my 7 projectiles, that is more than .054 more than my AA Barrel, which lets factory 123gr A-max, SST and AA Scenro 123 ammo fall out fine after being locked in with a bolt.
Measured: SST-123gr, SST-129gr, SST-120, V-Max-95gr, Sierra Spitzer-120gr, Barnes TTSX & TSX-120gr