Y’all say prayers?? I just had a GREAT day. Thanks to the homies
So you know all that math I do, offset zeros at 25y to compensate for a 50y/250y zero? Like my MK18 10.3” barrel, pushing green tip at X velocity, with MRO at X height over bore etc etc is essentially - 1.11”
So I know to block out that offset on a zero target at 25y and use my choice ammo, and I tight AF Clover leaf me some groups POI -1.11at POA.
On the other hand, My PS90, having a TROS Mount and a low pro RMR type 2 3.25 MOA over bore puts my 25y zero POI offset at around -2.5” so I draw out and no shit tight measure 2.5” offset zero targets and group them tight with my preferred defense ammo.
Well I do all these calcs with my rifles and optics and designators because I have free access to a 25y indoor range and can shoot before/after hours good lighting no distractions and continue to tighten said groups when I have opportunity but realize you need to confirm at your actual zero distances.
well today I went up to Appalachian to confirm since I heard their range was awesome and had indoor rifle 50y. Couldn’t be more true Place was top notch, great experience.
target with 6 small circles at 50y
First three shots out of the MK18 MOD 0 Clone, Trijicon MRO 10.3” barrel 1:7 using 62gr green tip (same ammo for all zeroes done at 25 onviously)
Damn. Red dot system on a small 10 ring at 50y looks like math paid off!! I’ll ta Clear rifle put back in bag.
By the way I’m using red dots on everything and a carry handle on the third.
Next up, went to see if math checked out on the 16” mid-length 5.56 1:7 nitride Carry handle and FSB. Using m855 ammo as well. I don’t recall the exact 25y offset but seeing as AR sight height is usually 2.5” over bore, the difference in velocity with the 16” vs 10.3 was Instead of 1.10” @25y was like 1.14” but Ive tried my best to nail it at 25y these last few weeks.
First 3 shots at 50y with carry handle. Yeah, yeah, I see the one flyer but not a bad group! Everything looks good with me! Math has checked out twice I’m loving this. 6 rounds deep thus far.
Last but not least was the good ol PS90, 16” barrel with RMR 3.25 MOA on a low pro TROS Mount.
The Combination of a larger MOA dot, a good but squishy bull-pup trigger, and a 2.5” 25y offset zero had me skeptical how close I’d be. 2 for 2 thus far.
Hey! Not too bad! Elevation looks great and about 1.5” left. Give my RMR 2 clicks right, send the target back down to fifty and cover it with Mr.fat RMR dot. Send 3 more
much better. I haven’t spent much time
On the PS90 nor it’s trigger BUT I know it’s a capable gun. That being said, with all things considered I was totally cool with that and called the weapon combat zeroed at 50y for a 50/200y (PS90 5.7 numbers) zero
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