I've three .177 HW springers. 7 fpe, 11 fpe, and 14 fpe...they are all accurate and deadly at closer ranges but...I find them to be very wind sensitive. All it takes is a slight puff of breeze to blow the pellet around. All three are pushing a .177 pellet to about 800 fps...which is a wonderfully flat trajectory and makes for an accurate and not very hold sensitive experience which is nice.
But the .20 caliber has me thinking...at 16 fpe I could push a .20 pellet to 800 fps for a similar experience just with a lot more retained energy and a higher BC.
Logic is trying to tell me that maybe .177 springers shine the brightest up to about 12-13 fpe at which point maybe .20 is a bit more efficient at transferring energy from a compressed spring to a pellet.
I don't think I'm interested in .22 as I'm fairly certain the loopy trajectory would be detrimental...not to mention the increased hold sensitivity.
I'm currently running my HW97K at 14 fpe in .177 and while it's wonderfully accurate by the time the 9 grain pellet gets to 40 meters it's lost a ton of energy and is incredibly vulnerable to wind.
It seems like maybe a .20 at 16 fpe would have a very similar shot cycle while transferring more energy and still being accurate and flat.
Fyi-I'm running the FTT 8.64 grain in my HW97K at around 860 fps...which is just over 14 fpe. When I shoot 10.34 grain JSB's they are only going about 780 fps which is under 14 fpe.
A .20 shooting 11.42 FTT at 800 fps is doing just over 16 fpe....that is significantly more energy with roughly the same shot cycle...seems like maybe the .177 shines with 8-10 grain pellets at around 13 fpe. Am I missing something here? What can you .20 aficionado's fill in for me from your experience?
But the .20 caliber has me thinking...at 16 fpe I could push a .20 pellet to 800 fps for a similar experience just with a lot more retained energy and a higher BC.
Logic is trying to tell me that maybe .177 springers shine the brightest up to about 12-13 fpe at which point maybe .20 is a bit more efficient at transferring energy from a compressed spring to a pellet.
I don't think I'm interested in .22 as I'm fairly certain the loopy trajectory would be detrimental...not to mention the increased hold sensitivity.
I'm currently running my HW97K at 14 fpe in .177 and while it's wonderfully accurate by the time the 9 grain pellet gets to 40 meters it's lost a ton of energy and is incredibly vulnerable to wind.
It seems like maybe a .20 at 16 fpe would have a very similar shot cycle while transferring more energy and still being accurate and flat.
Fyi-I'm running the FTT 8.64 grain in my HW97K at around 860 fps...which is just over 14 fpe. When I shoot 10.34 grain JSB's they are only going about 780 fps which is under 14 fpe.
A .20 shooting 11.42 FTT at 800 fps is doing just over 16 fpe....that is significantly more energy with roughly the same shot cycle...seems like maybe the .177 shines with 8-10 grain pellets at around 13 fpe. Am I missing something here? What can you .20 aficionado's fill in for me from your experience?
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