im having a hard time understanding the oal of a 9mm bullet. the manuals seem to read 1.169 oal , but when i look up the manufacturers specs they say 1.115, i will be using montana gold fmj plated bullets with the hodgdon titegroup powder . it just seems like a big difference in lengths and from what i have read it seems to make a big difference in 9mm on how deep you seat them . any help would be much appreciated and thank you for your time