OBP507 propellant... Anyone know its branded name or nearest
Posted: Tue Nov 01, 2016 3:00 pm
OBP507 is produced by St Marks for large scale commercial use. I was able to source a little of it for myself and it worked very well. I have tried to find out what brand name it has when marketed to sports shooters but so far no luck. From the MSDS sheets it looks like it may well be a Hogdon product but cannot confirm and more than that.. Any of you reloading gurus have any idea?