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  #31  
Old 01-03-2016, 05:16 PM
Tozguy

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Quote:
Originally Posted by jaia View Post
Did you try sorting regular 22 mag ammo in any way to see how that might improve groups?

Weight sorting, rim thickness, case diameter, oal....showed no consistent results.
When messing with rimfires, the amount of primer used along with the powder charge
and variations in seating depth/case diameter means there is no way to ensure
repeatable chamber pressures from shot to shot. Add in canted or not fully seated heads
there's no way to obtain consistent trajectories. The 22 wmr is a hunting round,
as such it's accuracy is fine for golf ball size targets out to 75 yards, but is not/was not
intended for use for competition at extended ranges. The manufacturing process
just does not have the quality control that is needed for such a purpose.

I'm not saying that you can't get lucky with a batch of wmr ammo,
but don't bet the farm on every shot being where the crosshairs are.

From my experiences, don't expect anything better than about 2 moa average at 100 yards.
I agree entirely. I understand that some things like the amount of primer can't be measured or detected by you or me. But if you were to sort a box of ammo to eliminate the observably defective rounds, what would you measure or inspect?

If we were to try to make our own luck by picking the ten best rounds from a box of fifty, and then shoot 2 five round groups, would you bet that there would still be fliers?

Last edited by Tozguy; 01-03-2016 at 05:30 PM.
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  #32  
Old 01-03-2016, 05:55 PM
jaia
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If we were to try to make our own luck by picking the ten best rounds from a box of fifty,
and then shoot 2 five round groups, would you bet that there would still be fliers?



I've tried sorting 22wmr, results were not worth the effort.
Could not find a method to produce consistent results.
If I'm going to spend that much time and effort on ammunition
it'll be at the reloading bench and 1/4 moa at 200 yards is the objective.


Last edited by jaia; 01-03-2016 at 05:59 PM.
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  #33  
Old 01-03-2016, 08:38 PM
CamP

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According to Federal's data, their 40gr WMR round deflects 6" @ 100 yards with a 10mph cross wind. That's about what I've seen with 40gr Maxi-Mag.
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  #34  
Old 01-04-2016, 02:36 AM
Creekstone
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I have a good supply of the RWS and you are right, it is quite accurate. The main thing is it is the hottest .22mag I have ever shot and is not recommended for handguns. Probably not around anymore because years ago it was selling for $30 to $35 per 50.

Last edited by Creekstone; 01-04-2016 at 02:41 AM.
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  #35  
Old 01-04-2016, 05:37 AM
Tozguy

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Quote:
Originally Posted by R.Kipling View Post
It will help if you elaborate on the conditions and your shooting technique. Temps/wind, rifle and sights, types of rifle rest and ammo's.

To quote a former shotgun instructor, "often, it's not the arrow, it's the indian..."

IMHO,
Kip
If you know of any Indians that have their act together and can show us their model groups for 22 mag then that would help.
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  #36  
Old 01-04-2016, 07:43 AM
jaia
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Anybody try barrel tuners for the 22 mag?

Does this count?



Zinc anode from a prop shaft and a layer of sorbothane

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  #37  
Old 01-04-2016, 11:25 AM
Tozguy

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Yes it does! Did it help?

My plan is to swap this one from a 222 barrel to my 22mag barrel and have some better groups to show tclong.
Attached Images
File Type: jpg IMG_1569.JPG (117.5 KB, 188 views)
File Type: jpg IMG_1570.JPG (141.1 KB, 187 views)

Last edited by Tozguy; 01-04-2016 at 11:27 AM.
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  #38  
Old 01-04-2016, 11:32 AM
jaia
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I tried it, results inconclusive.
As I learned later, tuners only correct for small variations in muzzle velocity.
When the chronograph is showing mv spread in excess of 160 fps
the tuner is just a heavy weight on the end of the barrel absorbing recoil.
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  #39  
Old 01-04-2016, 07:33 PM
jaia
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I've been playing with chronograph numbers for 22lr.
Do you know what the optimum distance is for the 22lr? About 20 yards.
I used the highest and lowest numbers chronographed for 22lr.
Obtain time of flight from a ballistic calculator, calculate vertical drop at 50 yards,
then calculate spread along the parabolic curve to find what I consider to be acceptable accuracy.
The number I expect is about 1.5 times the diameter of a 22 round, call it 3/8th's of an inch.
Did the same thing for the 22wmr just for giggles.


Using my chronograph measurements:
Hottest round of 22wmr was 2357 fps mv, time of flight at 50 yards is 0.071 seconds.
Slowest was 1792 fps mv, time of flight is 0.091 seconds.
0.071 x 0.071 x 386.04 inches (gravity) divided by 2 = 0.97 inches vertical drop at 50 yards.
0.091 x 0.091 x 386.04 divided by 2 = 1.60 inches vertical drop at 50 yards
Vertical difference of POI at 50 yards for the 22wmr = 0.63 inches
Using a simple vertical curve calculation: 115 feet divided by 150 feet = 0.76666
0.766666 squared = 0.588, times the vertical spread (0.63") = 0.37 inches (3/8th inch)
So even with cr*p 22wmr ammo, one holers should be obtainable at 38 yards,
as long as the rifle is mechanically correct and shooter has the skills.
That's about double the optimum distance of the 22lr.

Last edited by jaia; 01-04-2016 at 07:37 PM.
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  #40  
Old 01-05-2016, 01:52 PM
Mossbergman
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  #41  
Old 01-08-2016, 06:40 AM
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Really happy with cci maxi mags and my 452 varmint.

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  #42  
Old 01-08-2016, 06:41 AM
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Winchester super x aren't to bad at all either.

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  #43  
Old 01-08-2016, 03:13 PM
jaia
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As I said, good hunting ammo out to 75 yards
but in no way can it be considered match grade ammunition.
2 moa average is typical of my results also.
Ammunition quality is just not there.






That vertical spread is all on muzzle velocity differences.
not you or the rifle. Easy to prove with a chronograph.

Last edited by jaia; 01-08-2016 at 03:21 PM.
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  #44  
Old 01-08-2016, 04:22 PM
snagglepuss

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This cannot be tolerated.
People posting photos of real world results with the WMR.
The 'my WMR shoots 1/2moa all day long' must be rolling over in their graves
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  #45  
Old 01-08-2016, 04:39 PM
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I bet with the cci I could get it a little tighter at 100. But right now as the target is that is the size of a squirrel head and a dead one. So good enough for me.

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