Definitely at least an adjustable iron type sight, tru glo and williams make nice ones. I prefer 2 beads personally but my 20ga does not shoot behind the beads so I added a tru glo adjustable.
I’ve been experimenting with the Sig Romeo this fall (geese and sporting clays). Function is fine, but it has failed 3 times to wake up from sleep mode. Pull up and no dot.
Between this and one Romeo that could not be sighted in, I’m about done with them.
I have had good luck with the Leupold Delta Point Pro and Holosun 507c on my competition guns. I’ll probably put a Leupold DPP on my turkey gun.
I put several cheap red dots on my kids turkey gun, ended up throwing them all it he garbage and going with a vortex venom. Never looked back it’s awesome and great battery life.
Aimpoint 9000SC. You can beat the crap out of it, leave the red dot on for days, it won’t fail you. At some point in time, cheap red dots fail and leave you hanging.
I went with the trijicon rmr fiber optic version. Love the triangle. Top point of the triangle on the base of the neck and it’s over. No batteries needed.
Save money and get a middle, smaller bead put on his rib. Teach him to stack the beads and practice shooting his hunt load to identify the dense part of the pattern. He will learn how to sight on the rib of the shotgun (proper technique) and he will learn how to pattern his shotgun to ammo. Win, Win.
I’m thinking about getting a cheap (less than $100, probably less than $50) red dot in the next week or two and seeing how it holds up for turkey. I’ve read enough accounts of the $30 ones holding up to 12ga turkey loads that it seems like it’s worth a shot. I generally like the buy once cry once approach but it seems like red dots may hit the diminishing returns point at a low dollar amount. Could be wrong, I’ve never had one. Would be interested in more testimonials of cheap ones getting the job done.