View Single Post
Old November 29, 2012, 12:38 AM   #11
old roper
Senior Member
 
Join Date: June 11, 2007
Posts: 987
phorton. COAL for the 280 is 3.330" and if your using Barnes data the start load is 52gr/H-4841SC max 55gr/H-4831SC and Barnes has the COAL @ 3.270" with load density at 92% for their 140gr bullet.

If your using IMR-4831 51grs to start max 54.5gr load density 95% in the Barnes manual for 140gr bullets.

I don't have any IMR-4831 or I dump some in a 280 case but I dumped 57gr/H-4831SC and I had over 1/2" before bullet touch powder and 150gr TSX if I seated those I'd hardly be compress @ 3.330".

If you got short throat and these longer bullets take up case capacity best to switch over to a FB bullets they be little shorter than BT. Before you think about having longer throat might want to check magazine length.


My 280AI was factory Rem in 280.
__________________
Semper Fi
Vietnam
VFW
old roper is offline  
 
Page generated in 0.04912 seconds with 7 queries