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"Curiously" is my Altoids Tin catapult, here rigged with Precise 3G 0.7 mm, 13/9.5 mm taper, 181 mm effective rubber length, for "archery stance", forearm horizontal.
I found a new bit of less-stretchy string and put careful knots in it for precise draw length control. This is masking-taped to the end of the grip and is held between forefinger and middle finger.
I bench-tested the draw weights.
Ammos are clay, named by weight in grammes, with steel weight equivalent diameter indicated in mm. I shot all ammos at 4.75x stretch first, and so on.
I used a Dankung Chronograph, indoors.
I found less magic than I had hoped for.
"Wild" means total FPS spread of more than 5 fps approx.
"Poor" means compared with 4.75x stretch.
"Band broke" means I spotted the tear near the left pouch tie before it broke.
The only magic was old magic, the FPS consistency at 4.75x stretch with this shoelace rig with all ammos, and its continuing ability to shoot 1/2" steel at all!
Only the one fork hit, with ammo diameter up to 80% of fork gap width, this hammered the left fork corner, but it was somewhat hammered already, being relatively soft Okoume marine plywood. Good tree branch would have shrugged it off.
Horrible sight, clay fragments all over the floor.
Mike
I found a new bit of less-stretchy string and put careful knots in it for precise draw length control. This is masking-taped to the end of the grip and is held between forefinger and middle finger.
I bench-tested the draw weights.
Ammos are clay, named by weight in grammes, with steel weight equivalent diameter indicated in mm. I shot all ammos at 4.75x stretch first, and so on.
I used a Dankung Chronograph, indoors.
I found less magic than I had hoped for.
"Wild" means total FPS spread of more than 5 fps approx.
"Poor" means compared with 4.75x stretch.
"Band broke" means I spotted the tear near the left pouch tie before it broke.
The only magic was old magic, the FPS consistency at 4.75x stretch with this shoelace rig with all ammos, and its continuing ability to shoot 1/2" steel at all!
Only the one fork hit, with ammo diameter up to 80% of fork gap width, this hammered the left fork corner, but it was somewhat hammered already, being relatively soft Okoume marine plywood. Good tree branch would have shrugged it off.
Horrible sight, clay fragments all over the floor.
Mike
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