Red dot on turkey gun

Joined
Apr 7, 2024
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I need some guidance in red dot selection. I’m pretty set on Holosun either maybe a 507k or 507c. Unfortunately my gun doesn’t have a milled receiver so I’ll have to run something like a sumtoy mount. I’m very firearms literate but I’ve never fired a shotgun with a red dot so hard to imagine which is more practical.

I kinda like the larger sight window on the 507c but I’m questioning if the 507k is enough. I do see that a lot of the factory mounted guns come with a 407k/507k which are milled so it sits lower. 507k 0.95H x 0.98W vs 507c 1.14H x 1.24W. Also I’d imagine there might be a slight difference in the mounts being is a micro footprint vs a RMR which will add additional height but I can’t find concrete data on that.
 
Get the Holosun 507C. The larger window is a massive practical advantage for fast, forgiving target acquisition on a scattergun. Pair it with a solid, low-profile mount from Sumtoy, EGW, or similar.
 
I put this on my 20ga turkey gum last year. I haven’t shot it a ton, but I like it so far. I like not having to mess with mounts.

 
I would get the 407c. The circle dots are not useful aiming devices even if they in theory match a shotgun spread. The single center dot is a better aiming option.

The K series holosun sights are significantly less forgiving for finding the dot just because of how tiny they are. They should only be used when mounting real estate is the limiting factory like a sub 1” ccw pistol.

I would drill and tap your receiver over a sumtoy barrel mount. I helped a guy zero with one of those and it was a disaster. It felt like trying to zero with a half broken $75 scope that wouldn’t take the day before deer season opened. It’s a simple job any local gunsmith can do or you can DIY it by renting a drill tap jig for $38 from 4D reamers. https://4drentals.com/product/tool-rentals/mauser-tools/williams-scope-mount-drilling-fixture/

I’m not sure I would use an open emitter red dot on a turkey gun now that so many enclosed options are out there. Too much exposure to rain during turkey season for my liking for an open emitter.
 
507c

I have two of them. Big sight window as mentioned previously. One mounted with a Sumtoy. Sumtoy mount fit perfectly and the transaction with them was easy.
 
Sight window won’t matter if you shoot both eyes open which I prefer particularly with red dots. If you don’t shoot both eyes open, I recommend trying it.
 
Sumtoy is massively behind Scalarworks, KE Arms or Reptilia for quality low profile shotgun mounts.

The idea you would use a slotted hole for an optic mount is mind blowing from a repeatability standpoint point.

EGW makes a good mount but they are pretty thick and high mounts.
 
Got a few 507c and work on lots of stuff. Got a mossberg 18.5” 940 pro Turkey went with EPS full size green to be enclosed and it has lower deck height than 407/507c and it’s been great and that rearward mount location I like more than forward gives nice fov inside the hoop. Also prefer just the 32 moa circle setting. Currently set up for challenger slugs and Carlson IC extended choke clovers those slugs at 40. I would use the big circle for any shot also. I’ve got a beretta a301 barrel mount 507c way out front that works but set up for buckshot and dogs where the whole works is in fur anyway lol. So play around with that you may be surprised at closer to face for seeing the scene better inside the hoop for precision stuff. It’s all pretty usable. Ran a 507c briefly on howa mini on front of action slot but do over I’d run it behind action to see as much as I could inside the hoop. I shot that out to 400. Quick fist size 3-shot group at 300 center of gong was easy peasy with 200 zero holding bottom of dot top of gong. Just used the dot only on rifle application. It was closer to 3.5-4 moa dot on the howa with that mount location.
 
The red dot is a game changer forsure. I have a Mossburg SA-20 with the pistol grip. Put a Vortex Venom on it that sits on a Sumtoy base plate. Killer setup!
 
I’ve never heard of the scalarworks mount before. After looking them up, there’s zero chance I would use something like that. It has way to big of a footprint for me.
 
I’ve never heard of the scalarworks mount before. After looking them up, there’s zero chance I would use something like that. It has way to big of a footprint for me.
Not sure which one you looked at but the beretta model is the same footprint as the sumtoy. I run scalarworks on my duty guns and they’re machined really well. I decided buy once cry once. Not to say the sumtoy isn’t quality, never seen one in person.
 
I use the 507C on both a 20-gauge scatter gun and on a Marlin 336. It's about perfect medicine for shot range optics.
 
Not sure which one you looked at but the beretta model is the same footprint as the sumtoy. I run scalarworks on my duty guns and they’re machined really well. I decided buy once cry once. Not to say the sumtoy isn’t quality, never seen one in person.
The one I saw had wings on the front and back of it. I use the Burris Fastfire mount and the Sumtoy mount. Both of those are the same size as the base of my sights(Vortex Venom and Burris Fastfire iii). They’re all I’ll use.

I certainly wouldn’t pay that much for one, either.
 
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