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Winchester subsonic ballistic coefficient .22lr


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thanks the link but have seen that one already and it shows the m/v as 1150 not 1065 fps

Is that not within acceptable variation? I presume you're using some sort of ballistics program. I don't think it's going to make a massive amount of difference as the ammunition isn't that consistent anyway. If you use the Hawke program you can calculate the BC by firing over various ranges

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you are probably right in that there is not much variation but as ballistic programs require it I just thought I would try and get it right.

 

1065 fps is subsonic, 1150 fps is not,( I know there are other variables such as altitude, humidity etc which can effect it)

 

whether this would make any difference I really don't know

 

its just bugging me :lol:

 

cheers

 

belly

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Think you might find it's .138. This matches the advertised bumph from Winchester

+1: 0.138 through chairgun works OK for me but you need to chrono from your gun,aside from the variation batch to batch,barrel length & bore size variations affect velocity.

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you are probably right in that there is not much variation but as ballistic programs require it I just thought I would try and get it right.

 

1065 fps is subsonic, 1150 fps is not,( I know there are other variables such as altitude, humidity etc which can effect it)

 

whether this would make any difference I really don't know

 

its just bugging me :lol:

 

cheers

 

belly

 

Its right to start with the best data you can. That said the factors you mention play a big part in things and you really can get too in depth into what the computer says with the .22 lr. If you want perfection in BC from that batch in your gun its a case of find it yourself from two chronograph ranges as there is no point trusting the reputed velocity when you get that in depth anyhow.

The LR is about the only round I don't hold data for in the field as I feel it works best when you shoot it a lot and develop a kind of feel for it and the ammo you favour. Never had really great results from Winchester once you push the ranges out some myself personally, if you want to get out some the very best ammo counts big time

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Its right to start with the best data you can. That said the factors you mention play a big part in things and you really can get too in depth into what the computer says with the .22 lr. If you want perfection in BC from that batch in your gun its a case of find it yourself from two chronograph ranges as there is no point trusting the reputed velocity when you get that in depth anyhow.

The LR is about the only round I don't hold data for in the field as I feel it works best when you shoot it a lot and develop a kind of feel for it and the ammo you favour. Never had really great results from Winchester once you push the ranges out some myself personally, if you want to get out some the very best ammo counts big time

as you say getting a feel for distance etc is priceless in terms of real world shooting but im just trying to get as accurate data as possible, unfortunately I do not own a chrono (only have one for air rifle) so as a result have been trying to find manufacturers info as a starting point.

 

only had a .22lr for a few months so I am still getting a feel for it out in the field, and as im sure you feel the same in as much as if I miss a shot I want to know that it was because of my error and not something I could have eliminated through better preparation, maybe im thinking to deep about it.

 

was certainly easier with the HMR that I had to let go unfortunately as that was pretty much point and shoot, but maybe using the .22 will, in time, make me a better shot.

 

I have only tried rws subs and now the Winchester subs through it so far, have tried some high velocity but found them not overly accurate even at short distance and too noisy for the permission I use the .22 on

 

thanks for your comments

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With subs If you zero at 50, your 6" to 8" low at 100 yds (dependant on speed / bullet weight bc). Full value 10mph think 4" at 100 (actually the wind isn't so far away from HMR at said range in practical terms at least) in reality winds like this normally rule out longer shots on quarry. Your chrono cannot work on RF can it not? Or is it one of those muzzle mounted things that seem to give funny results at times even with airguns? Subs are the way forward the only gain in HV is more power which isn't required for our quarry or needs in the UK IMO. Some target ammo gives good results and you don't always need the hollow point

When I select ammo I always personally place my trust in what it can do at 100 as mostly anything can shoot very well at 50, small differences always show up clearer at 100.

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you guessed it, my chrono is a chrono 4 which attaches to barrel of air rifle, actually found it ok to be honest, it certainly did the trick on my air rifle when I bought it as it was over powered and had to be returned, much to shops annoyance as they said they tested it prior to purchase!!!

 

I agree that subs are the ammo to use, certainly for me anyway.

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you guessed it, my chrono is a chrono 4 which attaches to barrel of air rifle, actually found it ok to be honest, it certainly did the trick on my air rifle when I bought it as it was over powered and had to be returned, much to shops annoyance as they said they tested it prior to purchase!!!

 

I agree that subs are the ammo to use, certainly for me anyway.

 

Seen them tell lies, I think they can vibrate or move slightly in use and give wacky readings, the shop that sold it as fully legal could have used a good one

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Seen them tell lies, I think they can vibrate or move slightly in use and give wacky readings, the shop that sold it as fully legal could have used a good one

I took it back to the shop and they said the chrono I used was not very good and that its probably a false reading, and off he went to try it on his `good one` only to return looking sheepish and agreeing that it was over power and they would have to return it.

 

the shop in question was The Airgun Centre.

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I took it back to the shop and they said the chrono I used was not very good and that its probably a false reading, and off he went to try it on his `good one` only to return looking sheepish and agreeing that it was over power and they would have to return it.

 

the shop in question was The Airgun Centre.

 

Yes it happens, but more often the guy would hand you back the gun saying 10.5 ft lb or the like after testing on a proper fixed set. I have seen a few mythical issues fixed because of how muzzle mount chronos read

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Give up with all this nonsense it's a .22 not a 50 cal at 1600 yards zero it at 50 yards Lear to shoot it out to 70 yards any thing further than that and you need some thing else

 

Life is too short to worry about balistic coefficients of .22 bullets

 

Go shooting then the pub and chill out

 

Deershooter

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Give up with all this nonsense it's a .22 not a 50 cal at 1600 yards zero it at 50 yards Lear to shoot it out to 70 yards any thing further than that and you need some thing else

 

Life is too short to worry about balistic coefficients of .22 bullets

 

Go shooting then the pub and chill out

 

Deershooter

sound advice, and if I had the money I would go to the pub

 

as I don't, I like to sit and play about with ballistic programs and try to improve knowledge and understanding whilst the mrs watches dross on tv

 

but thanks for comments

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Yet there are stacks of people doing a great job on bunnies and the like at much further than 70 yards, I have seen old guys shoot further with open iron sights. You just need to know when not to some days 70 yards is 20 too far for a clean DRT

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Chairgun or similar will get you close with a BC of 0.138,ave velocity of Winnies out of my gun 1020 to 1040 depending on batch which doesn't seem to affect POI(although I have recently stopped using Winnies after 2 rubbish batches of 500).Myself I hot glue 60mm cardboard squares onto bamboo skewers & set them up as targets from 30-100yds @ 10yd intervals,results for me seem close to Chairgun graph but for the cost of a few 22lr rounds I would rather be certain,plus I enjoy doing it.

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sound advice, and if I had the money I would go to the pub

 

as I don't, I like to sit and play about with ballistic programs and try to improve knowledge and understanding whilst the mrs watches dross on tv

 

but thanks for comments

 

Totally agree Belly. My earlier post was a reflection of the poor and inconsistent performance of the Winnies now. If you do a search, I contacted Winchester aboiut it, but they were totally disinterested. So, I spent a fun few hours testing different ammunition. Now bear in mine this is my rifle and everyones has a preference. I tested, CCI Segmenting, Winnies, old and new, RWS and Eley.

 

I like to mess around with ballistics programmes too. Its not everyones cup of tea, so they should just butt out and carry on doing what they like :yes: I found the Eleys were in a different league with consistency and accuracy compared with the others. I'm not going to brag about distance on here as it will draw out the same old knuckle draggers. However, I will say that 100yards with Eleys, produced groups that winnies could only dream of a less than 40 yards. And with the info I have to feed into a ballistics program now, I can dial in the range, ( because that's what I like to do!) out to quite a way, with very satisfying accuracy.

 

Atb

T33

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I don't seem to have any problems with winnies at the moment. I've often head shot rabbits out to 80m with no problems. All depends on wind speed. My rifle is zeroed to 60m. I often fill a load of plastic water bottles, draw targets on then, range them out and shoot from the top down to see where my bullets are hitting. great fun and gives a good clue on what's going on. just remember to take all your rubbish home afterwards.

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Totally agree Belly. My earlier post was a reflection of the poor and inconsistent performance of the Winnies now. If you do a search, I contacted Winchester aboiut it, but they were totally disinterested. So, I spent a fun few hours testing different ammunition. Now bear in mine this is my rifle and everyones has a preference. I tested, CCI Segmenting, Winnies, old and new, RWS and Eley.

 

I like to mess around with ballistics programmes too. Its not everyones cup of tea, so they should just butt out and carry on doing what they like :yes: I found the Eleys were in a different league with consistency and accuracy compared with the others. I'm not going to brag about distance on here as it will draw out the same old knuckle draggers. However, I will say that 100yards with Eleys, produced groups that winnies could only dream of a less than 40 yards. And with the info I have to feed into a ballistics program now, I can dial in the range, ( because that's what I like to do!) out to quite a way, with very satisfying accuracy.

 

Atb

T33

i think i will try the Eley when i next get some ammo, i will have to drive a little further to get them but from what ive heard they are pretty good.

 

I don't seem to have any problems with winnies at the moment. I've often head shot rabbits out to 80m with no problems. All depends on wind speed. My rifle is zeroed to 60m. I often fill a load of plastic water bottles, draw targets on then, range them out and shoot from the top down to see where my bullets are hitting. great fun and gives a good clue on what's going on. just remember to take all your rubbish home afterwards.

ive only put about 40 Winchesters through mine so far, but seem ok in the field, definitely sounded like they had more of a thump to them when hitting rabbits, as i believe they have a wide HP.

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