sighting in with reflex sight

[Old Timer]

Mossberg SA-20 with swampfox kingslayer. Throw the sight in directions out, I found them useless. I wanted to do the vise method many here recommended but I did not have an extra set of hands. Dave Owens did a video of cutting the bottom of the dot out at 8 yards with game loads then moving back to 40 for tss.
Son of a gun it worked. Took me 3 shots with cheap loads to cut bottom of dot out. Moved target to 40 yards and I was perfect. Shot only 1 tss. I would of liked to post a pic and tried it in my phone all I got was a blank page. For any of you struggling sighting in a reflex I attest this method works.

[2flyfish4]

Yep, I had no issues with dove loads and my turkey loads having different points of impact. I did shoot at 10 yard increments just to make sure.

Also, I got a 12ga laser bore sight off Amazon for like 10-15 bucks and that helped a bunch with getting me pretty dang close before I even took a shot. Now I use it as a reference to make sure I'm still on every spring.

[BDeal]

I recently sighted in two 20 gauges with TSS and Burris FF 3's. I shot field loads at 15 yards first to get them close and then shot a TSS round, made a minor adjustment to each, and then shot another and they were good to go. Just to be sure I shot both at 40 yards as well and both were dead on. i would not feel comfortable not shooting a round close and far as I have had some that were dead on at 15 or 20 but where the pattern was a little high or low at 40.