What velocity ammo are most using? At what range does .22lr go transonic? Or are most staying under the sound barrier?
Paul
Paul
Longrange Rimfire Ammo Question
- Thread starter libertyman777
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Re: Longrange Rimfire Ammo Question
Subsonic ammo for long range shooting. Many like the Wolf (1050 fps). As long as you stay under the speed of sound you'll be ok.
A good rule of thumb I use is that high velocity ammo is ok out to 50 - 60 yards. Past 50 - 60 yards use subsonic ammo. Like all ammo you will need to test the subsonic stuff available and see which one works best in your firearm. Personally I have found (for me) that Eley Sport (1085) gives me satisfactory results for the type of shooting I do.
Then again I have also found that the Aguila Super Extra (1135 fps) has also performed very well at all ranges. I might add that speed of sound where I live is 1117 fps most of the time. This leads me to believe that I'm loosing at least 18 fps before the bullet ever leaves the barrel.
Subsonic ammo for long range shooting. Many like the Wolf (1050 fps). As long as you stay under the speed of sound you'll be ok.
A good rule of thumb I use is that high velocity ammo is ok out to 50 - 60 yards. Past 50 - 60 yards use subsonic ammo. Like all ammo you will need to test the subsonic stuff available and see which one works best in your firearm. Personally I have found (for me) that Eley Sport (1085) gives me satisfactory results for the type of shooting I do.
Then again I have also found that the Aguila Super Extra (1135 fps) has also performed very well at all ranges. I might add that speed of sound where I live is 1117 fps most of the time. This leads me to believe that I'm loosing at least 18 fps before the bullet ever leaves the barrel.
Re: Longrange Rimfire Ammo Question
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: libertyman777</div><div class="ubbcode-body">What velocity ammo are most using? At what range does .22lr go transonic? Or are most staying under the sound barrier?
</div></div>
under 1100 fps will usually keep it under the transonic thing
the transonic thing also depends on temperature, barometric pressure, etc, so the range a HV rounded will "convert" greatly depends on environmentals , you can run your particular setup through a ballistic calculator to get an idea of where about it happens.
if your usual shooting distance is within that transonic distance, you should be OK, but the match / standard / subsonic ammo usually outperforms the HV stuff even within that distance (stability and consistancy).
most of your standard velocity, match, or subsonic ammo begins and ends under the sound barrier , keeping it "true" through the whole flight of the bullet.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: libertyman777</div><div class="ubbcode-body">What velocity ammo are most using? At what range does .22lr go transonic? Or are most staying under the sound barrier?
</div></div>
under 1100 fps will usually keep it under the transonic thing
the transonic thing also depends on temperature, barometric pressure, etc, so the range a HV rounded will "convert" greatly depends on environmentals , you can run your particular setup through a ballistic calculator to get an idea of where about it happens.
if your usual shooting distance is within that transonic distance, you should be OK, but the match / standard / subsonic ammo usually outperforms the HV stuff even within that distance (stability and consistancy).
most of your standard velocity, match, or subsonic ammo begins and ends under the sound barrier , keeping it "true" through the whole flight of the bullet.
Re: Longrange Rimfire Ammo Question
A ballistic calculator requires a reasonably reliable bullet BC. What do you use, and where would one find such data?
Greg
A ballistic calculator requires a reasonably reliable bullet BC. What do you use, and where would one find such data?
Greg
Re: Longrange Rimfire Ammo Question
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Greg Langelius *</div><div class="ubbcode-body">A ballistic calculator requires a reasonably reliable bullet BC. What do you use, and where would one find such data?
Greg </div></div>
Here's a starting point>
RFC BC's
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Greg Langelius *</div><div class="ubbcode-body">A ballistic calculator requires a reasonably reliable bullet BC. What do you use, and where would one find such data?
Greg </div></div>
Here's a starting point>
RFC BC's
Re: Longrange Rimfire Ammo Question
Tagged, good info. Midways got a decent sale on some Aguila if anyone's interested.
Tagged, good info. Midways got a decent sale on some Aguila if anyone's interested.
Re: Longrange Rimfire Ammo Question
i use wolf mt in my 452. i tried quite a few and it shot best for me i believe its 1060fps
i use wolf mt in my 452. i tried quite a few and it shot best for me i believe its 1060fps
Re: Longrange Rimfire Ammo Question
FWIW a friend of mine chronographed SK Standard Plus (Which is supposed to be the same exact ammo as the Wolf Match) right at 1100 FPS . We then shot it out to 225 yards and used the drop data to figure the BC which we measured at .160 .
FWIW a friend of mine chronographed SK Standard Plus (Which is supposed to be the same exact ammo as the Wolf Match) right at 1100 FPS . We then shot it out to 225 yards and used the drop data to figure the BC which we measured at .160 .
Re: Longrange Rimfire Ammo Question
What rifle are you using? My Savage Mark II BTV likes CCI Target LRN 40gr 1070 fps.
What rifle are you using? My Savage Mark II BTV likes CCI Target LRN 40gr 1070 fps.
Re: Longrange Rimfire Ammo Question
Under 150 yards, I'm not terribly picky about my ammo. My CZ is the least finicky rimfire I've ever shot and most loads group well enough that any radically wild shots can be traced directly to the loose nut behind the trigger. I shoot CCI Velocitors and Winchester Power Points for long range (150+ yards). They are relatively high velocity, but use heavy bullets. In my experience the 40+ grain bullets hold better groups at longer distances, but drop more than the lightweight hypervelocity stuff, making range estimation a bit more important. Both these loads also spank critters with authority!
Under 150 yards, I'm not terribly picky about my ammo. My CZ is the least finicky rimfire I've ever shot and most loads group well enough that any radically wild shots can be traced directly to the loose nut behind the trigger. I shoot CCI Velocitors and Winchester Power Points for long range (150+ yards). They are relatively high velocity, but use heavy bullets. In my experience the 40+ grain bullets hold better groups at longer distances, but drop more than the lightweight hypervelocity stuff, making range estimation a bit more important. Both these loads also spank critters with authority!
Re: Longrange Rimfire Ammo Question
I'm using Wolf MT; it shoots very well out to 200Y with the exception of what seems to be 2-5 "flyers" in every 50 round box. I shot 150 rounds across the chronograph a few weeks ago for a sanity check... sure enough the observed flyers were ~30fps off the average (1055 average fps out of my 17" Volquartsen 10/22 barrel.) The flyers aren't way off target but the velocity difference is more than enough to miss a 1" dot at 100Y in elevation (which is a tough task to do consistently with a .22 IMO-- especially if there's any wind at all.)
I don't pre-sort the ammo as I'm not shooting matches but I may measure the rim thickness and weigh a box of 50 and see if there is any easily observable trait to identify the flyers ahead of time.
Still, for the most part it shoots very well and the price is right at about $4/box.
I'm using Wolf MT; it shoots very well out to 200Y with the exception of what seems to be 2-5 "flyers" in every 50 round box. I shot 150 rounds across the chronograph a few weeks ago for a sanity check... sure enough the observed flyers were ~30fps off the average (1055 average fps out of my 17" Volquartsen 10/22 barrel.) The flyers aren't way off target but the velocity difference is more than enough to miss a 1" dot at 100Y in elevation (which is a tough task to do consistently with a .22 IMO-- especially if there's any wind at all.)
I don't pre-sort the ammo as I'm not shooting matches but I may measure the rim thickness and weigh a box of 50 and see if there is any easily observable trait to identify the flyers ahead of time.
Still, for the most part it shoots very well and the price is right at about $4/box.
Re: Longrange Rimfire Ammo Question
two days ago, i tried 4 different types of ammo at the range in my mp15-22 out to 50yds. as expected, the accuracy of the platform is nowhere near my cz452 varmint. the ammo i used were Wolf mt, federal auto match, federal 550, and cci minimags.
the wolf mt gave me the best 5 rd groups of 1 1/8". the worst were federal auto match at 2.75". just in case you were wondering.
two days ago, i tried 4 different types of ammo at the range in my mp15-22 out to 50yds. as expected, the accuracy of the platform is nowhere near my cz452 varmint. the ammo i used were Wolf mt, federal auto match, federal 550, and cci minimags.
the wolf mt gave me the best 5 rd groups of 1 1/8". the worst were federal auto match at 2.75". just in case you were wondering.
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