praythenspray
02-20-19, 16:40
I picked up some of the Hornady 62 grain FMJ to try out. According to this, https://press.hornady.com/assets/site/hornady/files/load-data/223-rem-60-62gr-1.pdf . It says the COAL is 2.229" for the 62 grain FMJ.
From searching around on this site, It seems like the consensus leans towards loading to a COAL of 2.250". And when I loaded some bulk 62 grain PRIVI Partizan in the past that is the coal I used. That was also the stated coal in the latest Sierra reload book I use.
So I assume that the Hornady COAL is due to the cannelure. Then again, after web surfing I read on some various sites that they have worked up loads with a COAL of 2.220".
I guess I am curious about what would be the minimum length for a loaded round for the AR? I mean besides over pressure of the case, what would be the only other detriment, potential accuracy?
From searching around on this site, It seems like the consensus leans towards loading to a COAL of 2.250". And when I loaded some bulk 62 grain PRIVI Partizan in the past that is the coal I used. That was also the stated coal in the latest Sierra reload book I use.
So I assume that the Hornady COAL is due to the cannelure. Then again, after web surfing I read on some various sites that they have worked up loads with a COAL of 2.220".
I guess I am curious about what would be the minimum length for a loaded round for the AR? I mean besides over pressure of the case, what would be the only other detriment, potential accuracy?