Blkhrt13
Member
He
said five rounds each type
Chronying 6 x 'ultra-high velocity' 22LR
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I just found some locally as it turns out. Will run a few through this weekend.
Blkhrt13
Member
I am not fussing cause I appreciate the information. But it occurred to me a more accurate test would be 5 random rounds from different batches. I’m absolutely sure there is variance based on barrel. I wish we could check with a different rifle. I’m way too nerdy about this…
its the realities of the supply chain and finances taking priority over the math here. I have quite a few CCI Stinger and Velocitor so could batch test some of them but only one lot of most of the others.
You say you wish we could check with a different barrel, well run some tests with a different barrel.
You say you wish we could check with a different barrel, well run some tests with a different barrel.
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I'm surprised most of the velocities are that close to the packaged claim. Really, that could just be conditions, barrel lenght, humidity, temperature. Seems like with just the right conditions those velocities are likely real. Reminds me I have a box or two of the Aguila high velocity hollow points to get out and do some testing.
Carl N. Brown
Member
OK. Most .22 LR ammo is loaded to give good performance in both pistols and rifles.
For most .22 LR ammo that means highest velocity is attained at barrel length 19 inches or so.
18.5 inches is a very common barrel length for practical sized .22 rifles. Testing actual velocity in the gun you use is useful.
My "however" is that the ammo companies seldom publish the barrel length of their test barrels.
I did read years ago about an independent .22 ammo test with a universal receiver "firearm" starting at 26" barrel length. They chronographed .22 ammos, cutting 2 inches off between tests, until they were down to 2" breech to muzzle. (I read this this back before ammo makers jumped on the hypervelocity band wagon.) CCI Stinger was the only .22 LR ammo that had a substantial increase in velocity past 18 or 20 inches of barrel length.
For most .22 LR ammo that means highest velocity is attained at barrel length 19 inches or so.
18.5 inches is a very common barrel length for practical sized .22 rifles. Testing actual velocity in the gun you use is useful.
My "however" is that the ammo companies seldom publish the barrel length of their test barrels.
I did read years ago about an independent .22 ammo test with a universal receiver "firearm" starting at 26" barrel length. They chronographed .22 ammos, cutting 2 inches off between tests, until they were down to 2" breech to muzzle. (I read this this back before ammo makers jumped on the hypervelocity band wagon.) CCI Stinger was the only .22 LR ammo that had a substantial increase in velocity past 18 or 20 inches of barrel length.
I might have to wait until the first of the month to purchase a new chronograph. But once I get a new chronograph, I will test what ammo I have in my Savage MkII BTVLSS with 21" varmint barrel and my AR22 with a 16" CMMG heavy barrel.
Here is the ammo I have to test;
CCI: AR Tactical 40Gr RN, CCI Mini Mags 40 Gr RN, Standard 40Gr RN
Aquila Super Extra 40Gr RN, Super Extra 38Gr HP
Federal Champion 510 40Gr RN
Here is the ammo I have to test;
CCI: AR Tactical 40Gr RN, CCI Mini Mags 40 Gr RN, Standard 40Gr RN
Aquila Super Extra 40Gr RN, Super Extra 38Gr HP
Federal Champion 510 40Gr RN
I'd read similar on that and its actually why I decided to pull some 22LR bullets and weigh the powder charges. Most 22 ammo is around 1 -1.5 grains of powder. CCI stinger is 2.2 grains from memory. would explain why it keeps gaining.
That would be very interesting , hope you go ahead with it. I will see if I can find these to test with my 18.5" barrel too.
I am definitely getting a new chronograph, it might not be until after the first of November though. And weather permitting, I will get out a test. One never knows what the weather here in Missouri will do this time of year.
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