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iamdb · March 2, 2012, 10:50 PM

I am having a had time under standing the variations in COL. I am about to start loading for 9mm. My lyman 49 has no data for 124.gr fmj and I cannot not find "factory data" on titegroup with 124 fmj. on he internet. I have found most people seem to load 4.1gn-4.3gn but no COL is listed. I have seen "factory data" recommend lenghts for fmj from 1.005" to 1.169"

Is there some sort of science or formula to figure out the COL for a given load?

March 2, 2012, 10:50 PM	#1
iamdb Senior Member Join Date: March 13, 2011 Posts: 455	COL Science? I am having a had time under standing the variations in COL. I am about to start loading for 9mm. My lyman 49 has no data for 124.gr fmj and I cannot not find "factory data" on titegroup with 124 fmj. on he internet. I have found most people seem to load 4.1gn-4.3gn but no COL is listed. I have seen "factory data" recommend lenghts for fmj from 1.005" to 1.169" Is there some sort of science or formula to figure out the COL for a given load? __________________ John 20:29 Jesus said to him, “Thomas, because you have seen Me, you have believed. Blessed are those who have not seen and yet have believed.”