Cz 457 pro varmint 16.5 inch barrel.

[Coxy383]

Hi all. Got this little beauty to try learn some basics of longer range shooting. I'm printing holes at 50 yards. Inch at 100 yards which I'm happy with. Now I'm trying to hit 200. My app says 26.63 moa with 40 grain CCI standard velocity which I think at 200 would mean approximately 52 inches of drop with moa being approximately 2 inches at 200 yards. Then the graph under it is showing over 5 feet of drop..... I tried hold over. Dieling and a combo of both but can't see where anything is hitting........so my question is where have I screwed up or is it maybe the shorter barrel length not getting the full velocity out of the round? Thanks all

[bladeracer]

Hi all. Got this little beauty to try learn some basics of longer range shooting. I'm printing holes at 50 yards. Inch at 100 yards which I'm happy with. Now I'm trying to hit 200. My app says 26.63 moa with 40 grain CCI standard velocity which I think at 200 would mean approximately 52 inches of drop with moa being approximately 2 inches at 200 yards. Then the graph under it is showing over 5 feet of drop..... I tried hold over. Dieling and a combo of both but can't see where anything is hitting........so my question is where have I screwed up or is it maybe the shorter barrel length not getting the full velocity out of the round? Thanks all

Drop will depend on what distance you are zeroed at.
I use this and it keeps me very close out to 400m with CCI Standard Velocity: https://shooterscalculator.com/ballistic-trajectory-chart.php?pl=%5BPreset+Name%5D&presets=&df=G1&bc=0.135&bw=40&vi=1070&zr=110&sh=3.145&sa=0&ws=10&wa=90&ssb=on&cr=550&ss=1&chartColumns=Range~m%60Elevation~cm%60Elevation~MOA~FBFFF5%60Windage~cm%60Windage~MOA~FBFFF5%60Time~s%60Energy~ft.lbf%60Vel%5Bx%2By%5D~ft%2Fs&lbl=&submitst=+Create+Graph+

200m is around 28 minutes for me from a 50m zero, about 1600mm of drop, it'll vary a little depending on wind direction.

Barrel length won't affect the velocity significantly with standard velocity ammo, unless you start going over about 26". My 25" barrel lost just 18fps over my 18.5" barrel with CCI SV.

If you're just starting out with longer-range shooting grab some sheets of MDF from Bunnings, 900x1200mm, 1200x1800mm etc are pretty cheap - an 8'x3' sheet here of 3mm is $17.50. Keep it out of the weather and it will survive many thousands of rounds. Start at 50m, move out to 100m, then 150m, then 200m and so on, recording your DOPE as you go.

Yes, unless you have dry dirt around the target it is very difficult to see bullet impacts at 200m or more, it will be helpful to have a mate on another scoped rifle calling your shots if you can.

[Coxy383]

Thanks very much for your help mate.

[bladeracer]

Thanks very much for your help mate.

No worries. I should've pointed out that that calculator is imperial but that link is to my metric presets for range and drop/drift, you can swap it back to yards and inches if you prefer. The input distances must be yards and inches but it will output in meters and centimeters if you tell it to. There are some other online calculators you can try as well.

It can be frustrating stretching straight out to long distances if you don't have a spotter, so just work your way out incrementally, recording your sight settings as you go. You'll very quickly get a feel for the curve. A BDC scope reticle can be a huge help too.

.22LR uses heeled cast bullets with very poor external ballistics so you'll find groups open up significantly with distance. With a high-velocity rifle and high-BC jacketed bullets a rifle that shoots one minute at 100m may well still hold one minute out to 300m or more before the groups start spreading. I haven't seen this with .22LR. The rifle may hold one minute (29mm) at 100m but might only manage two minutes (116mm) at 200m and might be holding three minutes (260mm) by 300m due to variations in the bullet and changes in the wind during its long flight time. At 500m my "one minute" rifles group in _roughly_ 750mm (about 5MoA) - once I've gotten a grip on the wind.

Have a look at this thread on the forum for the "Long Gong" competition done in Ireland if you want a very simple but challenging entertainment while you are practicing.
https://enoughgun.com/forum/viewtopic.php?f=17&t=18502
Three gongs of 4", 6" and 8" all shot at 300yd (274m) - for starting out I would put them no further than 200m but just put them wherever you are comfortable and move them out as you improve. The gongs don't need to be AR or BZ, 5mm mild steel is fine for 22LR, even 3mm mild would likely stand up to years of use. You can of course just cut some circles out of paper and tape them to a sheet of MDF while waiting for gongs, but even a spotting scope might struggle to see .22-cal holes at that distance so you'll be doing some walking.

[jpsauer88]

As mentioned I do think that velocity wise and standards your not getting velocity decrease with 16". However, that is very different to HV ammo, keep that in-mind. I will be doing a comparison on 22lr HV ammo next week out of my 28.6" Jaguar.
MDT did a video, best groups were with 35" from memory but optimum velocity was with 16.

If your shooting 200m why not use HV, the extra 200fps is very useful at those ranges, you can get some ammo more accurate than SV CCI (RWS HP HV, S&B HV, ELEY HV HP). Sighted in at 50, you have 10" less drop with HV. 16" less drop with the velocitors

But then you would probably want a longer barrel. Im hoping my results will confirm this with a 20", 24" and 28" comparison.

What sort of rifle you shooting?

[bladeracer]

As mentioned I do think that velocity wise and standards your not getting velocity decrease with 16". However, that is very different to HV ammo, keep that in-mind. I will be doing a comparison on 22lr HV ammo next week out of my 28.6" Jaguar.
MDT did a video, best groups were with 35" from memory but optimum velocity was with 16.

If your shooting 200m why not use HV, the extra 200fps is very useful at those ranges, you can get some ammo more accurate than SV CCI (RWS HP HV, S&B HV, ELEY HV HP). Sighted in at 50, you have 10" less drop with HV. 16" less drop with the velocitors

But then you would probably want a longer barrel. Im hoping my results will confirm this with a 20", 24" and 28" comparison.

What sort of rifle you shooting?

I tested a whole lot of high-velocity stuff. SK High-Velocity was the most accurate ammunition I tested but was already discontinued. No other HV ammo shoots as well as CCI Standard Velocity for me. Federal F510 shoots very well for me but hasn't been available in Oz for a couple years now. I have tested it out to 335m from memory but I would have dig up my results, all I recall right now is that it doesn't shoot as well as the CCI SV.

Trajectory really isn't relevant, especially when shooting at targets at known distances.

I tested CCI Quiet (710fps), CCI SV (1070fps), and CCI Copper-22 (1850fps) in three of my rifles (18.5", 20", 25") a couple years ago. The Quiet loses some velocity in the longer barrel, the Copper makes more velocity in the longer barrel. The standard velocity made virtually the same velocity in all three barrel lengths.

[Sean]

This is the best info on 22LR at distance, thanks fellas. Same issues for me too.
Soots great at 50 & 100 but lost at 200. Appreciate the education