.22 Ballistics Chart
- Thread starter georgel
- Start date
- Replies 17
- Views 449
I am going to use a 25yd zero on the new CMMG conversion upper for cheep
up to 100yd practice. That will put me 2.5in high or low out to 100.
up to 100yd practice. That will put me 2.5in high or low out to 100.
OP
georgel
Behind Every Blade of Grass
Charter Member
Benefactor
Supporting Member
Multi-Factor Enabled
With 40gr Mini-Mags at advertised velocities, I'm showing a 25yd 0 will yield...
-0.04" at 50
-1.77" at 75yds
-5.39" at 100yds.
A 100yd 0 yields..
+1.34 at 25yds
+2.68 at 50
+2.28 at 75
Of course it depends on the actual ammo and velocities, but you might consider +1.34" if you're going to sight in at 25yds. I'm playing with the same things to set up a critter getter pest rifle.
What is your height above bore of sights ?
Tim
Checked Out
Staff member
2A Bourbon Hound 2024
2A Bourbon Hound OG
Charter Life Member
Benefactor
Vendor
Multi-Factor Enabled
.22lr is really finicky. This chart is a great starting point, but so much will depend on the actual firearm/ammo combination. Small velocity differences have big results down range for .22lr.
Go to 2.5 which the AR is and you get my ballistics.
OP
georgel
Behind Every Blade of Grass
Charter Member
Benefactor
Supporting Member
Multi-Factor Enabled
Ah, much better numbers. And in this case it was counter-intuitive to me. I would have thought a closer to bore scope would have yielded "flatter" numbers. I've heard many argue that scope over bore doesn't matter. It may not, in the sense you "dial in" what you need, but it matters in a practical sense, as we see here. BTW, this reminded me to remeasure my actual scope over bore, because I changed the mounts and I'm now 1.7" over bore on that rifle. I have to remeasure another rifle because I went to a 30mm tube. I actually enjoy this part of it all.
Indeed. .22's are at best a guess until you put holes in paper. It's like reloading, it just a recipe and everbody's will turn out different.
I think with .22's the form factor is so small, little variances have a greater relative affect than say a .308. Chamber dimensions, smoothness, rifling differences, bolt drag in semi-auto's, etc, etc. are magnified in a .22.
I used that same chart before I learned about strelok.
Wish I was as good with computer programs as i am with a slide rule. I learn a lot from you guys good with computers.
OP
georgel
Behind Every Blade of Grass
Charter Member
Benefactor
Supporting Member
Multi-Factor Enabled
Somewhere, around here is a brand new (well, new in 1972) Pickett aluminum slide rule in optic yellow with a leather case.
@Elenaidan can attest, that you need 90 MOA from 50 yard sight in to reach 400 yards 
fun times
For all of you that see the inch drop, you might not know how to convert it to MOA or MIL is really simple.
Now take the listed inch value and divide it by the drop to get your optic adjustment
As a example the 22lr bullet chart has:
Line one has -19.9" of drop at 150yards
MOA
-19.9/1.5705 = 12.67 MOA for a 1/4 MOA adjusted optic I would record this is 12.5 MOA of elevation
MIL
-19.9/5.4 = -3.68519 MIL for a .1 MIL adjusted optic I would record this is 3.7 MIL of elevation
Now to have some fun, if you have a MOA adjusted MIL reticle there is 3.438 MOA per MIL. You can take the 12.5 MOA / it by 3.438 and get 3.6 MIL
Math, it works.
John
fun times
For all of you that see the inch drop, you might not know how to convert it to MOA or MIL is really simple.
| In Inches | ||
| Yards | 1 MOA | 1 MIL |
| 50 | 0.5235 | 1.8 |
| 100 | 1.047 | 3.6 |
| 150 | 1.5705 | 5.4 |
| 200 | 2.094 | 7.2 |
| 250 | 2.6175 | 9 |
| 300 | 3.141 | 10.8 |
| 350 | 3.6645 | 12.6 |
| 400 | 4.188 | 14.4 |
| 450 | 4.7115 | 16.2 |
| 500 | 5.235 | 18 |
| 550 | 5.7585 | 19.8 |
| 600 | 6.282 | 21.6 |
| 650 | 6.8055 | 23.4 |
| 700 | 7.329 | 25.2 |
| 750 | 7.8525 | 27 |
| 800 | 8.376 | 28.8 |
| 850 | 8.8995 | 30.6 |
| 900 | 9.423 | 32.4 |
| 950 | 9.9465 | 34.2 |
| 1000 | 10.47 | 36 |
Now take the listed inch value and divide it by the drop to get your optic adjustment
As a example the 22lr bullet chart has:
Line one has -19.9" of drop at 150yards
MOA
-19.9/1.5705 = 12.67 MOA for a 1/4 MOA adjusted optic I would record this is 12.5 MOA of elevation
MIL
-19.9/5.4 = -3.68519 MIL for a .1 MIL adjusted optic I would record this is 3.7 MIL of elevation
Now to have some fun, if you have a MOA adjusted MIL reticle there is 3.438 MOA per MIL. You can take the 12.5 MOA / it by 3.438 and get 3.6 MIL
Math, it works.
John
Last edited:
One thing I’ve learned with rimfires… if the ballistic chart doesn’t give you actual chronograph velocities from a particular lot of ammo, barrel length, and atmospherics, then it might not even be good enough to work as a starting point. You definitely need your own dope, gathered on usefully large targets, before trusting any chart from a third party.
That MCARBO chart lists the Winchester Subsonic as having 2.1 MIL drop at 100 and 4.7 MIL at 150.
I have a 10/22 with a 18” E.R. Shaw barrel (zeroed at 50) that shoots CCI SV (depending on temp) at 1.7-1.8 MIL at 100 and 4.3-4.4 MIL at 150. It’s a “fast” barrel that seems to be very efficient with that ammo.
If I’m shooting 2” steel at 100 and 3” steel at 150, I’m shooting airballs with MCARBO’s data, even though the advertised velocities of the rounds are only 5 FPS apart.
Meanwhile, I have a 513-T with a 27” barrel that shoots the same CCI SV with a 2.6 MIL drop from 50 to 100 (36 clicks—9 MOA—on the Redfield sight).
That MCARBO chart lists the Winchester Subsonic as having 2.1 MIL drop at 100 and 4.7 MIL at 150.
I have a 10/22 with a 18” E.R. Shaw barrel (zeroed at 50) that shoots CCI SV (depending on temp) at 1.7-1.8 MIL at 100 and 4.3-4.4 MIL at 150. It’s a “fast” barrel that seems to be very efficient with that ammo.
If I’m shooting 2” steel at 100 and 3” steel at 150, I’m shooting airballs with MCARBO’s data, even though the advertised velocities of the rounds are only 5 FPS apart.
Meanwhile, I have a 513-T with a 27” barrel that shoots the same CCI SV with a 2.6 MIL drop from 50 to 100 (36 clicks—9 MOA—on the Redfield sight).
Tim
Checked Out
Staff member
2A Bourbon Hound 2024
2A Bourbon Hound OG
Charter Life Member
Benefactor
Vendor
Multi-Factor Enabled
Head to an NRL-22 or PRS .22 match and you'll see some fanatical wizardry going on with rimfires. I shot of couple of those matches and to say I was humbled is a gross misunderstatement. I had an easier time hitting at 1 MILE with my 6.5 CM than I did shooting those matches.
.22LR is a challenge. So many variables with the ammunition is out of any control you may want. We spent all morning getting schooled on the use of dope and Mil/Moa. Afterwards we hung out and shot a great number of rounds. Every bad habit I ever developed came to light in short order. Humbling indeed.