interesting concept for cqb type optics, wanted to share (Read 10536 times)

Veurs1911

Re: interesting concept for cqb type optics, wanted to share
« Reply #20 on: November 09, 2015, 03:48:45 PM »
XD haha Wish it was that easy :rofl: but yeah im currently working on that but i have to put more info together and possibly how the optic would work, theres a couple ways i could go about it but i was thinking of using a grid like system or a programmed BDC thats invisible to the eye so it keeps it simple and not busy as well as stays centered on the optic and has no parallax either, another problem i have right now would be to have everything fit into a compact size, im writing down all the notes i can for it so far, plus i will need detail drawings and stuff for a patent, even if its just an idea
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palaina.kawika

Re: interesting concept for cqb type optics, wanted to share
« Reply #21 on: November 12, 2015, 08:21:21 AM »
No harm in doing such a thing, but in a true dynamic CQB environment it is so simple for a proficient shooter to understand and apply a red dot and its hold off through a large range of distances from contact on out to longer distances. 

this is exactly what i was thinking. wouldn't your greatest worry in CQB be height-over-bore difference? and out in the open, a 50-yard zero on a red dot sight gives you only a couple inches of variation in trajectory out to about 250 yards (.223/5.56) before the real drop off.

Surf

Re: interesting concept for cqb type optics, wanted to share
« Reply #22 on: November 12, 2015, 04:52:52 PM »
this is exactly what i was thinking. wouldn't your greatest worry in CQB be height-over-bore difference? and out in the open, a 50-yard zero on a red dot sight gives you only a couple inches of variation in trajectory out to about 250 yards (.223/5.56) before the real drop off.
You are correct when talking about height over bore offset when it comes to close in stuff.  Since the military and LE in the US primarily utilize a M4/M16 pattern rifle we are talking about ~ 2.5" offset with irons or a co-witnessed optic.  So yes 2.5" can mean a world of difference in certain very foreseeable circumstances up close. 

Indeed if you use a 50yd / 200m zero in most 5.56 / .223 bullet types / loads / barrel lengths you are getting no more than 2.5" of +/- deviation out the roughly 240 - 250 yards.  At contact distance out to about 10 yards -2.5" and with the 50 yard zero, the projectile reaches its max ordinate of about +1.8" to +2.2" @ 150 yds, rifle / ammo dependent.

These concepts are not too difficult to teach, ingrain and for an individual to perform who is trained and reasonably practiced.