I broke another set of Pink Sumeike .45mm this morning. This set was a bit milder in draw weight but shot count was about the same. I used the crystal tying string and tri-fold on the bands at the pouch. Cut was 19mm x 13mm x 185mm and I shot mainly 5/16" steel ammo and a bit of 7mm. Speed was 216fps with 5/16" and 230 with 7mm. The tear at the pouch started at shot #320 and I got 11 more before the bands were hanging by a thread.
It's looking like the first shot test was not typical (193). The second and third tests were close (335 & 320).
I just started making a Full Butterfly set with the .4 Sumike with a 75" draw using my Linville Longtom. This is an old thread, and for me so far, the .45 Sumike has been the fastest. What I'm doing is making a heavy set to shoot a 55 gram tungstun ball and I've been trying to find a formula that will allow me to convert a draw weight ratio to ammo size that I can multiply and reconfigure for an acceptable draw weight that I can handle to max out the speed of the ball. I'm just trying to see how many fpe that I can actually come up with.
I haven't been successful in finding any formulas for the equasion, so I thought that maybe you might have an idea.
Is trying the .4 Sumike over the .45 Sumike a bad idea? This will be a first with the .4 to me... have you used it?
Right now, I have used 1-1/2" x 3/4" .45 Sumike doubles for smaller ammo that pushed well over 400fps with a PP Taurus, I can't draw these back all the way as triples... I have tried... lol, but the speeds with triples were less than 30fps faster anyway after I was able to set them to that 33" standard draw length.
I have both 45 gram and 80 gram weights to try blasting with, any help will be greatly appriciated.
Thanks,
Reed