A few weeks ago I took my new-to-me Smoke frame R51 out to the range. It was shooting 6" low at 35 feet. @%^#&*$@%!!! This was strange because my black R51 is spot on.
Then I lent it to a friend. As I was demonstrating it, I loaded a laser training cartridge into it and it was hitting dead-nuts. Huh?
Eventually, I realized that I was using the laser training cartridge with my street glasses. Tri-focals. And I was looking at them through the proper lens. When I was shooting at the range, I was using my safety glasses, with mono-focal corrective lenses. It's supposed to be the same focal point as the same lens I was using with my laser cartridge.
So I went back to the range and checked my bio-mechanics. I found that I was tilting my head down a little, in a sort of more aggressive body position, same as tucking the chin down when fighting. This aligned my eyesight through the top 1/3 of my lenses. Remember, they're mono-focal. Supposed to be the same focus no matter what part of the lens I'm looking through. But changing the point I was looking through the lens very subtly added a bit of unexpected parallax. It wasn't much but it changed my POI.
When I moved my head up to a more erect posture, my groups moved to the exact right spot.
Lesson learned.
Peace favor your sword,
Kirk
Then I lent it to a friend. As I was demonstrating it, I loaded a laser training cartridge into it and it was hitting dead-nuts. Huh?
Eventually, I realized that I was using the laser training cartridge with my street glasses. Tri-focals. And I was looking at them through the proper lens. When I was shooting at the range, I was using my safety glasses, with mono-focal corrective lenses. It's supposed to be the same focal point as the same lens I was using with my laser cartridge.
So I went back to the range and checked my bio-mechanics. I found that I was tilting my head down a little, in a sort of more aggressive body position, same as tucking the chin down when fighting. This aligned my eyesight through the top 1/3 of my lenses. Remember, they're mono-focal. Supposed to be the same focus no matter what part of the lens I'm looking through. But changing the point I was looking through the lens very subtly added a bit of unexpected parallax. It wasn't much but it changed my POI.
When I moved my head up to a more erect posture, my groups moved to the exact right spot.
Lesson learned.
Peace favor your sword,
Kirk