The nail you consider low was actually the best placed one. Owens has a 3/4” lap of which is considered the “sweet spot”. This is the area where the two parts of the shingle is laminated together and the only spot where the nails should be. Most of the “sure nail” strip is above the double lamination. Nail a shingle on in “sure nail” strip and another in the double lamination and then pull them off, you’ll find out the double lamination nails are by far the superior hold.
Also, tethering the air hose to your tool bag with a clip so you only have 3 feet of hose between that and the nail gun. Along with that, don’t stretch to shoot the far right nail, shoot that one when you do the left nail that’s right in front of you instead. You’ll be much more accurate.
i was 19-21 roofing 1982-1985 then went to welding trade school and just did my own roof last week but used a nail gun this time but hand nailed in my 19-21
