Its often been said that crosswinds affect 0.22 less than 0.177. I thought it'd be a suitably geeky waste of time to see what a wind-drift calculator would predict using a typical decent pellet in both sizes.
The outcome isn't a foregone conclusion, generally a 0.177 pellet is faster to the target than a 0.22 pellet but a 0.22 pellet has a higher mass per surface area (sectional density) meaning its more aerodynamic. Sounds like it could be a very close call...
Results were gathered using the following online calculator, but could have used Dave's excellent 'Chairgun' freeware program.
http://69.6.222.74/airgunjournal/cal....cfm?action=00
For the pellets - Daystate FTs in 0.177, BC=0.022, 11 ft lbs, MV=766fps and AA fields in 0.22, BC=0.032, 11 ft lbs,
MV=556fps. Assume a crosswind of 10mph at right angles to the direction of fire.
So here are the results for a few distances, drift calculated in inches.
range - 0.177 - 0.22
15 yrd - 0.48" - 0.45"
30 yrd - 1.98" - 1.84"
45 yrd - 4.59" - 4.23"
55 yrd - 6.99" - 6.40"
Conclusion: we can see that 0.22 has marginally less drift than 0.177, a slowly increasing percentage as the range increases but still under 10% at 55 yards.
Any comments?
Reply With Quote