I can't seem to find the measurement anywhere and I don't know if it's safe to pull one out of a cartridge with pliers. If you need to know the bullet type it's a 40 grain m22 Winchester 22 lr, it is not hollow point.
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What's the bullet length of a .22 lr?
- Thread starter goodgorilla
- Start date
I've wiggled the round loose from the brass a few times to see what the primer and powder looked like.
As long as you don't compress the rim 2 pliers will do the job with a quick twist.
As long as you don't compress the rim 2 pliers will do the job with a quick twist.
How about ballistic coefficient? Where have you found this data? I can't find anything.
I called up Winchester about the m22's they said the bullet length is .387, and the BC is .084 The advertised velocity is 1255, but hopefully I will get to chronograph some rounds tomorrow. I am thinking about pulling a bullet to compare the length.
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Sorry to recover a freaking mummy but as I meddle with ballistics I keep searching this information and coming back here every time.
Here is a RWS Rifle Match S bullet.
I cut the brass open with knife and wiggled the rim open.
The damaged side of the skirt is left out.
I would say that 0.48 is very close.
Here is a RWS Rifle Match S bullet.
I cut the brass open with knife and wiggled the rim open.
The damaged side of the skirt is left out.
I would say that 0.48 is very close.
While the dead is awaken I did another study. These values are from Litz's library, praise him.
The length is quite similar but there are surprisingly large differences that 0.02" bullet length does to twist rate / stability ON PAPER.
There are many other twist calculators also, but I found and used http://mcgowenbarrel.com/twist2/
And the results at 1050fps are:
0.48" bullet 1:11.6 = 11.5" twist
0.46" bullet 1:12.1 = 12" twist
Results at 1020fps are 0.1 twist rate higher
For Aguila Sniper Subsonic at 950fps:
0.684" bullet 1:7.8 = 7.5" twist
JBM ballistics Stability calculator with 16" twist:
0.48" bullet 1050fps
Stability: 1287
0.46" bullet 1050fps:
Stability 1.439
0.48" bullet 1020fps:
Stability 1.287 (unchanged)
0.46" bullet 1020fps:
Stability 1.439 (unchanged)
JBM ballistics Stability calculator with 11.5" twist:
0.48" bullet 1050fps
Stability 2.491
0.46" bullet 1050fps
Stability 2.786
0.48" bullet 1020fps:
Stability 2.491 (unchanged)
0.46" bullet 1020fps:
Stability 2.786 (unchanged)
Spin drift:
0.48" bullet at 1050fps SK Rifle Match at 300m AB calc:
16" twist: 0.31mil (3.7") Spin drift
11.5" twist: 0.47mil (5.5") Spin drift
-----------------------------Bullet Length
Cartridge----------------cm-------in
Eley Edge ----------------1.168 0.460
CCI Minimag ------------1.168 0.460
Fiocchi Official 320----1.168 0.460
SK Flatnose Match ----1.199 0.472
SK Long Range Match 1.207 0.475
RWS Rifle Match--------1.207 0.475
Federal Target-----------1.207 0.475
SK Rifle Match-----------1.219 0.48
Eley Match----------------1.219 0.480
Eley Tenex----------------1.219 0.480
RWS R50------------------1.219 0.480
Lapua Center-X ---------1.219 0.480
Lapua Midas +-----------1.219 0.480
Aguila SSS----------------1.737 0.684
The length is quite similar but there are surprisingly large differences that 0.02" bullet length does to twist rate / stability ON PAPER.
There are many other twist calculators also, but I found and used http://mcgowenbarrel.com/twist2/
And the results at 1050fps are:
0.48" bullet 1:11.6 = 11.5" twist
0.46" bullet 1:12.1 = 12" twist
Results at 1020fps are 0.1 twist rate higher
For Aguila Sniper Subsonic at 950fps:
0.684" bullet 1:7.8 = 7.5" twist
JBM ballistics Stability calculator with 16" twist:
0.48" bullet 1050fps
Stability: 1287
0.46" bullet 1050fps:
Stability 1.439
0.48" bullet 1020fps:
Stability 1.287 (unchanged)
0.46" bullet 1020fps:
Stability 1.439 (unchanged)
JBM ballistics Stability calculator with 11.5" twist:
0.48" bullet 1050fps
Stability 2.491
0.46" bullet 1050fps
Stability 2.786
0.48" bullet 1020fps:
Stability 2.491 (unchanged)
0.46" bullet 1020fps:
Stability 2.786 (unchanged)
Spin drift:
0.48" bullet at 1050fps SK Rifle Match at 300m AB calc:
16" twist: 0.31mil (3.7") Spin drift
11.5" twist: 0.47mil (5.5") Spin drift
-----------------------------Bullet Length
Cartridge----------------cm-------in
Eley Edge ----------------1.168 0.460
CCI Minimag ------------1.168 0.460
Fiocchi Official 320----1.168 0.460
SK Flatnose Match ----1.199 0.472
SK Long Range Match 1.207 0.475
RWS Rifle Match--------1.207 0.475
Federal Target-----------1.207 0.475
SK Rifle Match-----------1.219 0.48
Eley Match----------------1.219 0.480
Eley Tenex----------------1.219 0.480
RWS R50------------------1.219 0.480
Lapua Center-X ---------1.219 0.480
Lapua Midas +-----------1.219 0.480
Aguila SSS----------------1.737 0.684
I would think this will change a lot with different bullets and manufacturers. I would like to know the length of these 22LR bullets:
- CCI Standard Velocity - someone reported .9945 but I find that hard to believe.
- ElY High Velocity - again it was reported as .9845
Thanks,
MIke
Bryan's Applied Ballistics team measures the bullet lengths so you are in luck. They are available to public through Kestrel ballistics app.
They have CCI Select measured which is supposed to be better than the bulk stuff, I guess.
But it shows 0.502" for length, I find it suspicious, but it surely should be valid.
They have logged Eley Edge as 0.46", this could be the same bullet they load their HV cartridge too.
