1000fps 22lr?

First-off, I don't think you can rely on the velocity numbers printed on the box. To take that one step further, the velocity indicated usually refers to the speed of the bullet right at the muzzle. Subsonic ammo can lose 75 fps +/- in the first 100 yards, so speed drops relatively fast. That said, I'm not aware of any ammo that is reported to shoot at 1,000 fps. even. I think the closest I'm aware of is CCI Suppressor at 970 fps or CCI Standard Velocity at 1070 fps. I say "I'm aware of" because I try to use CCI above all else...as hard as the stuff is to track down. :p

Most shooters I know consider 22 ammo to fall into one of 2 categories; subsonic (under the speed of sound, 1,116 fps approx) or "high velocity"/supersonic~faster than the speed of sound. Manufacturers seem to want to keep it safely below @ about 1080 or nicely above the 1,120 mark. I suspect they don't want 1/2 the rounds in a box of ammo being significantly louder than the other half. :)

Note:I'm no authority on this stuff...and am clearly in a mood to ramble... lol Just my understanding of things.
 
No reason, was out plinking with different types of ammo and noticed a gap. Having said that, it was cold enough the 1050 fps went supersonic, would have liked to see the 1000 to see if it was loud or not
 
I would say that there are four general velocity categories of rimfire ammunition; "Quiet" types 700-900, "Sub-Sonic" types 900-1100, "High Velocity" types 1120-1400, "Hyper Velocity" types 1400-1750...

Velocity is dependant on many factors, and testing is not standardized among manufacturers. I have chronoed Subs that went supersonic, and high velocity loads that went subsonic... so the firearm and conditions play a considerable part in determining velocity.

It sounds like you are wanting a load that is as fast as possible, while still remaining subsonic, even in unfavourable conditions.

Try testing subsonic loads from different manufactures to see what the real world results are given your parameters.
 
The speed of the ammo matters. I have two .22 firearms, one a Colt 1911-A1 and the other a Pietta PPS-50 Puma..
Both require "high velocity" ammo.

Subsonic or Normal mid speed ammo (1000-1200 FPS @ muzzle) causes FTF 1 in 25-50.
So knowing what speed the ammo is, is important.
 
I prefer shooting sub-sonics out of my pump and bolts. The subs are harder to find and more expensive but they seem to be just a bit more accurate at rimfire distances. I'll even shoot "quiets" when shooting inside 50yrds because they are more readily available.
I buy the cheaper HV bulk for my Ruger MKIII….good thing it's not ammo sensitive.
 
msnively said:
The speed of the ammo matters. I have two .22 firearms, one a Colt 1911-A1 and the other a Pietta PPS-50 Puma..
Both require "high velocity" ammo.

Subsonic or Normal mid speed ammo (1000-1200 FPS @ muzzle) causes FTF 1 in 25-50.
So knowing what speed the ammo is, is important.
Click to expand...

The speed only matters in a blow-back semi-auto... the cycling is sensitive to the reciprocal energy expended by the shot... if it is either too strong or too weak, you will have problems... you can of course go the other way; find an accurate load and then tune your gun to that load... this is what I prefer to do.
 
bandit86 said:
No reason, was out plinking with different types of ammo and noticed a gap. Having said that, it was cold enough the 1050 fps went supersonic, would have liked to see the 1000 to see if it was loud or not
Click to expand...

I doubt that the cold made the 1050 fps ammo "supersonic". As air gets colder it gets denser and the speed of sound speeds up. Most ammo when colder shoots slower depending on the powder sensitivity to cold. Both effects would take your 1050 fps ammo further below the speed of sound (about 1127 fps at 68 degrees F).

270 totheend
 
I have some of those cci segmented hollow point quiet shells .. 750 ish ft per sec. super quiet sounds like a air rifle. I thought my gun misfired the first time it fired.
 
270 totheend said:
I doubt that the cold made the 1050 fps ammo "supersonic". As air gets colder it gets denser and the speed of sound speeds up. Most ammo when colder shoots slower depending on the powder sensitivity to cold. Both effects would take your 1050 fps ammo further below the speed of sound (about 1127 fps at 68 degrees F).

270 totheend
Click to expand...

Makes sense...


I'm thinking the muzzle blast may have been higher though, due to denser air transmitting the blast more... and maybe that gave him the impression of supersonic results?
 
i also believe most printed speeds are with a 20-22" barrel. most rimfires are shorter than that so you will get decently lower speeds. loads advertised at 1050 fps out of a 10-16' barrel will probably be just above 1000 fps.
 
from what I have read, 16" is the ideal length for high velocity .22lr. Anything more is a slight drag. Shorter looses a bit. I may be wrong, but I believe I have seen that referenced with data to back it up a few times now.
 
it depends on if the rounds are meant for pistol or rifle. almost all rifle rounds are measured at around 20" barrel and have slower burning powder in them. the pistol rounds are measured with a shorter barrel and have faster burning powder. ideally you want to make sure that the powder finishes burning just as the round exits the muzzle so you dont waste any energy. and if the powder burns off too soon the friction from the barrel will slow the round down.
 
You must log in or register to reply here.
Back
Top Bottom