Another 22 caliber ballistics question.

[dan01]

All the ballistic calculators and charts give ballistic paths for rifles set to specific zero ranges..............I want to know the flight path of a 22 cal bullet (rise/drop) from the end of a unzeroed level barrel out to 100 yards or so (1200/1300 fps) (36/40grain)

With my 15 22 and other rifles I expect about a 4 to 6 inch drop at 100 yards zeroed at 25 or 50 yards....

 

[Dragon88]

There will be no rise, the bullet will begin dropping immediately with gravity from a perfectly level barrel. Plug your numbers into a ballistics calculator with a zero distance of 0 yards. Even 4 grains difference in the bullet or 100 fps make a difference.

 

[dan01]

I have no ballistics calculator......

 

[jajo]

I use the Nikon P22 scope with BDC. I zeroed mine at 30 yards for the crosshair - because that's what the range offers - and it's spot on at 100 yards using the first BDC circle.

I think that's a 6 inch drop

I'm using CCI Minimags in my 15-22.

If I can dig out the manual for the scope I'll update with something more specific.


Sent from my iPad using Tapatalk HD

 

[Dragon88]

I have no ballistics calculator......

Google has one.

External Ballistics Calculator

Oh, you'll need this too.

http://www.exteriorballistics.com/ebexplained/22rimfire.cfm

 

[rraisley]

All the ballistic calculators and charts give ballistic paths for rifles set to specific zero ranges..............I want to know the flight path of a 22 cal bullet (rise/drop) from the end of a unzeroed level barrel out to 100 yards or so (1200/1300 fps) (36/40grain)

With my 15 22 and other rifles I expect about a 4 to 6 inch drop at 100 yards zeroed at 25 or 50 yards....

Those are two very different circumstances. The drop at 100 yards for an "unzeroed level barrel" is about 14" for Federal Champions 36 gr. But you'd never aim it that way. If you zero at 25 yards, then yes, the drop at 100 yards will be roughly 3", with about a 1" rise at 50 yards.

 

[Majorlk]

Those are two very different circumstances. The drop at 100 yards for an "unzeroed level barrel" is about 14" for Federal Champions 36 gr. But you'd never aim it that way. If you zero at 25 yards, then yes, the drop at 100 yards will be roughly 3", with about a 1" rise at 50 yards.

That pretty much matches what I am seeing in my shooting.

 

[Kayback]

If you don't launch the bullet on a ballistic trajectory and launch it totally flat, it'll fall a 9.8m/s/s or 32.2ft/s/s.

So the only thing that will affect how far it drops at a distance is the muzzle velocity and velocity retention.

How fast it will have flown those distances will give you your bullet drop. No matter the bullet weight, something like a Hypersonic round will have dropped less than the sub sonics at that distance simply because it has been dropping for less time. With the times being equal the drop will be the same, but the HV's will have flown further.

You can work out the drop knowing your velocity and velocity retention and the downwards acceleration of gravity.

Add in your height above the ground and you can work out your maximum range for a totally flat barrel.....it isn't very far.

KBK

 

[rraisley]

Add in your height above the ground and you can work out your maximum range for a totally flat barrel.....it isn't very far.

Right. For Federal Classics and my 66" high eye when standing, a perfectly parallel barrel will result in an impact on parallel ground at about 205 yards distance. But of course no one aims that way, so the possible range, and normal drop, are much lower.

 

[ChattanoogaPhil]

All the ballistic calculators and charts give ballistic paths for rifles set to specific zero ranges..............I want to know the flight path of a 22 cal bullet (rise/drop) from the end of a unzeroed level barrel out to 100 yards or so (1200/1300 fps) (36/40grain)

With my 15 22 and other rifles I expect about a 4 to 6 inch drop at 100 yards zeroed at 25 or 50 yards....

Keep in mind that the term 'rise' is used in relation to the line of sight, it's not a reference to whether or not the bullet it traveling in an upwards direction away from Earth. The bullet does not have wings or propulsion of its own once exiting the barrel, so there is no 'rise' in the 'flight path' answer you're looking for. That said, here is an easy calculator to use. Handloads.Com Ballistic Calculator . I don't know of one that will generate a graphic trajectory, but if you have a piece of graph paper this calculator will give you the info you need.

The boxes are self explanatory. For what you're looking for-- Use zero (0) for [Sight in at] , [Sight Ht] and [Muz Elv]. If you don't know the [Ball Coef] of your .22LR use .12 and you'll be close enough for most typical .22lr. Put 100 in the [Mx Range] for 100yds. [Intervals] will help you plot the 'flight path' you're looking for. You have to put in a minimum of 5 into [Intervals], so that will give you 20 points (each 5 yards) to plot with using data from the calculated "Drop" column.

 

[rraisley]

If you're looking for a graph, there are quite a few of them online as well. This One is a bit more advanced than most, although forces you to make a few more decisions.

 

[mn_doggie]

If you're looking for a graph, there are quite a few of them online as well. This One is a bit more advanced than most, although forces you to make a few more decisions.

This is one of the better free online calculators I've used.

 

[rickyblaze]

Here's a pretty simple calculator for Winchester, it will give you some idea Winchester Ammunition

 

[dan01]

Rickyblaze......That is a nifty calculator....I added it to my favorites list..

Thanks

Dan

 

[w0ady]

i used the winchester calculator before and thought it was pretty neat.