Post
by DsGrouse » Sat Jun 06, 2026 8:00 am
I dug through my scope mount supplies and found a set of 30mm, 17mm-groove rimfire/air rifle rings.
I mounted the Sig Kilo/BDX scope I was given. The rings were too high for a good cheek weld, so I swapped out the butt stock for the one with a high comb. That was better but not great.
I shot 50 rounds of Hornady 30-grain and 100 rounds of CCI 40-grain, followed by 35 rounds of Remington 40-grain.
I love the rifle, I despise that Sig BDX/Kilo scope. The crosshair is so thick that at 100yds it ocludes a the whole 2 inch diamon on the target. There is almost 0 way to be precise. I also don't care for these rings, and that reinforces why they were in my parts bin.
Okay, I was able to get the scope and range finder combo to work. The lights lit up, and all that. The reason I was hoping to use this scope was so that I could dial in all the lights at my set distances of: 100yds, 125, 150, 175, 200, 238.
When I set up the ballistic calculator, it only allowed 100, 200, and 238. While that was helpful, it wasn't precise. Nor was it very accurate, dot-wise. The 238 dot hit the 200 yd targets and required half as much holdover to hit the 238 yd targets.
I thought maybe I'd better try a standard ballistics AP. I went with 4-DOF and applied ballistics. There isn't any data for 22mag bullets. I'll have to look up data online and save it in files or write it on ammo boxes.
4-DOF and applied balistics were more accurate. But the scope was not. They don't connect to the scope. They give you a set of clicks to turn the scope dial for windage and elevation.
Here is where I ran into a big problem. When dialing past 8 or 9, 0.25 MOA clicks, the scope's point of impact would jump. I'd then have to re-zero the gun.
After the first time, I went up 2 extra clicks and brought the dial back two clicks. I.e., I needed 7 clicks; I went up 9 clicks, then dropped it down 2. If I needed 14, I went up 9, dropped it down 2, went up 9 more, and dropped it down two. Problem solved. But my gosh it is a pia trying to remember that math after walking down to the range. I had to re-zero the scope twice more.
So, is the rifle accurate? I believe it is. I was able to regularly hit out to 238 yds. Is the rifle precise, eh, not at all with this scope. I'm going to lay the accuracy and precision on this absolutely miserable scope.
In the BDX/Kilo's defense, if I could have set it up with 100, 125, 150, 175, 200, 238 lights, I would have done much better and lived with it.
It needs a pick rail, not a 17mm mount. It needs a decent FFP scope with a solid zero-stop turret.
So, yeah, that's where I am at with it.
