I'm looking to buy .22 wmr ammo for my new Savage BRJ for target shhoting and I'm wondering where to start. There's lots of different bullet types, weights and velocities. So I'm wondering will a higher velocity bullet (2200fps) shoot more accurately than a lower velocity one (1875fps) or is there more to it?
Does ammo velocity directly relate to accuracy?
- Thread starter Zerex
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- Prince Albert, Sk
Every rifle is different.
Buy all the ammo you can, test, test, and test.
The rifle will let you know when it has something that works.
Buy all the ammo you can, test, test, and test.
The rifle will let you know when it has something that works.
All the Target grade ammo I have ever seen has been in the 'Standard Velocity' range. Maybe there is a reason for that. Actually, I know there is a reason for that, being trans-sonic stability. Avoiding the little ripple that is caused as the bullet transitions between supersonic and subsonic speeds.
Test test test, though. Sometimes the cheapest stuff you can get, works great, other times, not so much.
Cheers
Trev
Test test test, though. Sometimes the cheapest stuff you can get, works great, other times, not so much.
Cheers
Trev
Who makes subsonic .22WMR Match ammo? What you say is correct but it doesn't really apply here.
at what distance? subsonic is more accurate because it doesn't go trans-sonic, but beyond 100yd or so the drop is pretty big (due to flight time) so you'd end up giving up accuracy at longer distances. the FAST stuff is gonna fly flatter until it has to do the trans-sonic bit, so it ought to give you a longer accurate reach. once it goes crosses over, though, it could get knocked out of line quite badly.
i think you need to look at ammo velocity AND expected distance.
i think you need to look at ammo velocity AND expected distance.
There isn't any "match" ammo avail. for the .22 Mag. as it's not considered a "match" cartridge, so you'll just have to experiment with diff. ammo to see which is match ammo in your gun. Generally the heavier bullet will be most accurate in rimfires as it has the most bearing surface, similarly to cast bullet accuracy, where lighter bullets may not centre them selves as well on their trip up the barrel.
You missed my point entirely. Thanks for the info though, it's always nice to have someone "teach" you something you have known for many years... My point was that .22lr match ammo has nothing to do with the potential accuracy of his gun. He bought .22WMR. No one makes match ammo and if they did making it subsonic would be a dumb idea since you could have the same thing for much cheaper by buying a .22lr.
Speed will, as a rule of thumb, give you a flatter trajectory, but the rifle will tell you what is accurate for that rifle. No 2 rifles are the same, so try different stuff and see what works. After all, isn't the fun in trying different things and shooting ur toys?
it's amazing how many people fail to read the question around this whole CGN place...
ya, not a ton of choices in WMR, and most of it is specifically made to be FAST and have a longer reach and keep pushing the bullet for the full length of the barrel, unlike 22LR which.... isn't.
all the CCI and Federal stuff i looked at (WMR!!!!!!!) is still going at 1350fps or more by 100yrds, so at 150yds it still likely to be supersonic and probably won't have trans-sonic effects until 175yd. you should be fairly accurate to 150, and holding off for wind shouldn't be too difficult at 200. doubt you'd nail a dime at that distance, though. well, not a SPECIFIC dime. if you have a mountain of dimes, i'm sure you'll hit ONE of them - just maybe not the one you want to hit.
ya, not a ton of choices in WMR, and most of it is specifically made to be FAST and have a longer reach and keep pushing the bullet for the full length of the barrel, unlike 22LR which.... isn't.
all the CCI and Federal stuff i looked at (WMR!!!!!!!) is still going at 1350fps or more by 100yrds, so at 150yds it still likely to be supersonic and probably won't have trans-sonic effects until 175yd. you should be fairly accurate to 150, and holding off for wind shouldn't be too difficult at 200. doubt you'd nail a dime at that distance, though. well, not a SPECIFIC dime. if you have a mountain of dimes, i'm sure you'll hit ONE of them - just maybe not the one you want to hit.
Amazing how many people around here can't spell (or use the spell-check) and cannot be bothered to use the shift key either.
#### happens.
Some of us don't have to mouth along to the words, as we read, and as a result, punctuation, spelling, and the use of a shift key, help prevent errors in communications.
Cheers
Trev
for WMR its proly not so much of a speed but rather bullet weight. Lighter bullets are shorter and less stable. And then there is a harmonic thing. We don't reload 22WMR so can't really match harmonics, but some ammo will accidentally be closer to optimal then other. Or you can experiment with barrel tuners. Anyways, I'd say stay away from anything less then 37 grain bullet weight. My 2c
Bit of a hi-jack here but here goes.
How does a more curved trajectory affect accuracy or consistency of point of impact (POI) ? Speed deviation within a brand will contribute to inconsistent fall of shot , typically vertical and more noticeable with distance. Otherwise, just increase the amount of come-up for slower ammo. The quality control in the production of many target grades impart consistency along the whole flight path. The FAST stuff as you call it is not more accurate or consistent at long range - if anything it will display even greater inconsistency and dispersion due to the lower production standards without even considering the transonic buffeting.
To rejoin the thread- there is no reason why manufacturers could not make a target grade WMR other than demand, price and competition from CF ammo which already has considerably more accuracy. It's possible just not practical.
regards d
to re-jack:
i'm thinking it's more of a case of flight time and more specifically the drop velocity at the target distance. the longer the flight time, the further & faster the bullet is dropping, and the harder it is going to be to have an accurate amount of hold-off.
take it to a silly level to illustrate - even if two bullets from the same box have velocities of 1800fps and 2300fps, that's a HUGE spread but a minimal difference in flight time at a range of just 150-200yds. the resultant vertical drop within that timeframe (and after that short of a flight time) would be small.
flip side, 700fps and 680fps at a distance of 500yds. small delta, but after a long slow flight, the drop at the target distance would be massive.
bullet drop is horribly non-linear, as are the deltas. it's that whole 'g' thing going on - with each passing second of flight time, the bullet drops a larger and larger increment.
all of that ignores the transition through the sound barrier, which IS gonna toss the fast bullet out-of-whack. but at 150-175 yards, the 22WMR is still likely above that region, so by-and-large the effects could almost be ignored.
but then again, that's just primarily an educated conclusion. i've only shot 22LR up to 100yds, and didn't see a MASSIVE difference between SK Rifle Plus and CCI Stinger ammo at that distance. other than about a foot or two of drop.
Relative to one's expectation of consistency in POI, a deviation of 20-30% "...1800fps and 2300fps.." could have a dramatic effect, even at 150-200yds.
The more consistent the speed (less shot to shot deviation), the easier it will be to "hold-off" or adjust the come-up because all other things being equal the flight path will be nearer the same. Flight time and drop due to gravity have nothing to do with it. This is the whole purpose for reloading for CF to achieve consistency in the ammunition. Unfortunately not possible with RF.
These same effects can be observed at distances even of 100m or less. Speed variations of even 25-50fps have an observable effect on POI at 50 and 100m. Again,the expectation for POI consistency has to be considered.
The more consistent the speed (less shot to shot deviation), the easier it will be to "hold-off" or adjust the come-up because all other things being equal the flight path will be nearer the same. Flight time and drop due to gravity have nothing to do with it. This is the whole purpose for reloading for CF to achieve consistency in the ammunition. Unfortunately not possible with RF.
These same effects can be observed at distances even of 100m or less. Speed variations of even 25-50fps have an observable effect on POI at 50 and 100m. Again,the expectation for POI consistency has to be considered.
The most accurate ammo I shot out of a savage 93 that I owned was the federal 50grain ammo it would shoot right around 1 inch at a 100 yds.cci maxi mags shot about 1.5 inches at 100yds.the winchester stuff shot about the same but with more fliers.winchester dynapoints where not worth buying do to excessive miss fires.
