Well I finally decided to get off my butt and enter this competition. My average velocity was 247 fps and an average fpe of 34.3.
The slingshot I was using was a holy fork with 24 cm long active band length, 1.5 cm tapered to 1 cm thera band gold. The ammo was 5/8" steel weighing 253.24 grain. I set up the chrony using Mjs tutorial, and was 180" away from my target. My draw length was around 36". The pouch was constructed out of a work glove that was very thin but strong leather.
I hope I answered everything correctly and followed the rules properly.
Cheers BC-Slinger :king:
Good on ya for having a crack at the power club BC! Unfortunately I doubt this an accurate chrony reading given the amo, band cut and draw length.. not in any way am I being critical, or trying to rain on the parade, but I think a 3/8 steel would struggle to hit 250fps with this set up.. keep at it though and do try the paper method for a more accurate result, cheers Ben