Dragonfly .177 with lead free pellets

[splitbeing]

At 17 yds, the daisy lead frees on 1 and even 2 pumps won't flip the reset target on the air venturi steel buffalo trap.

Enter the FTT green 5.71s I had lying around. On 2 pumps, do the trick. Also proved accurate.

I did a ton of pellet testing on one pump with this rifle and the diasy lead frees beat all the rest for accuracy.

Now I need 2 pump power with accuracy.

The FTT green 5.71s flew at 183m/s or 600 fps, which amounts to 4.5 fpe.

[splitbeing]

Interesting... theDaisy lead free 5.25s are pushing 4.5fpe on 2 pumps as well (190m/s or 623 fps). Yet they more often than not fail to flip the reset target while the FTT 5.71s at 4.5 fpe do flip the target.

Could be BC. The Daisy's are a wadcutter shape while the FTTS are domes and slightly heavier. Seems strange though. Any thoughts?

[huntr]

My first thought was momentum. This calculator shows it... I think.

https://www.calculatorsoup.com/calculators/physics/momentum.php