Correct B.C. for Aguila 60gr .22LR

[dbooksta]

What's the ballistic coefficient of Aguila 60gr SSS .22LR bullets?

Somehow a B.C. of .09 was put online at least six years ago and it has been repeated everywhere. That's definitely not correct; the B.C. should be something over .2.

I called Aguila and they claim not to have any B.C. data.

Does anyone have a correct(er) number, or is anyone setup to measure this?

 

[TOP PREDATOR]

Re: Correct B.C. for Aguila 60gr .22LR

try hear scroll down, they were copied and pasted from another person / site so i can't confirm how factual they are: http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=1820531&gonew=1#UNREAD

 

[dbooksta]

Re: Correct B.C. for Aguila 60gr .22LR

Nope, that list contains the same erroneous BC for this bullet.

 

[HathcockProtege]

Re: Correct B.C. for Aguila 60gr .22LR

Plug your actual dope and MV into JBM and play with it a little?

 

[dbooksta]

Re: Correct B.C. for Aguila 60gr .22LR

I finally got out to the range and ran 20 shots of each of the following with a chronograph at 1 yard (don't worry, suppressor mounted) and then at 100 yards. This is through an 18" bbl with 1:9 twist.

For Aguila 40gr SuperExtra Subsonic I got a G1 B.C. of .107. (Avg. muzzle velocity 1027fps.)

For Aguila 60gr Sniper Subsonic I got a G1 B.C. of .127. (Avg muzzle velocity 902fps.)

These match the observed trajectory over the 100 yards.

In theory the 60gr should have a B.C. that is roughly 1.5x that of the 40gr. Drilling into my data it looks like the G1 B.C. is highly dependent on velocity, which means that <span style="font-weight: bold">G1 is a very bad ballistic model</span> for round-nose bullets of this weight running below Mach 1.

Do any experts agree with this assessment, and if so is there a better model for subsonic round-nose bullets?

 

[Clipper707]

Re: Correct B.C. for Aguila 60gr .22LR

I finally got out to the range and ran 20 shots of each of the following with a chronograph at 1 yard (don't worry, suppressor mounted) and then at 100 yards. This is through an 18" bbl with 1:9 twist.

For Aguila 40gr SuperExtra Subsonic I got a G1 B.C. of .107. (Avg. muzzle velocity 1027fps.)

For Aguila 60gr Sniper Subsonic I got a G1 B.C. of .127. (Avg muzzle velocity 902fps.)

These match the observed trajectory over the 100 yards.

In theory the 60gr should have a B.C. that is roughly 1.5x that of the 40gr. Drilling into my data it looks like the G1 B.C. is highly dependent on velocity, which means that <span style="font-weight: bold">G1 is a very bad ballistic model</span> for round-nose bullets of this weight running below Mach 1.

Do any experts agree with this assessment, and if so is there a better model for subsonic round-nose bullets?

Did you ever figure this out?

 

[DeathBeforeDismount]

Yea, he was waiting 10 years for someone to ask that question......