Assembling my first 75mm CTI reload, an M1101. It's a 4 grain. Question - each grain comes with an O-ring so do I only place the O-ring in between each grain and end up with an extra O-ring or does the 4th O-ring go on top of last grain in between grain & forward insulator disk?
I do not see the last O-ring in the supplied drawing so I just want to make sure it's done correct!
I do not see the last O-ring in the supplied drawing so I just want to make sure it's done correct!