Winny, and pin questions.....

[tigertat]

1. I know these are small but can I use 29 gauge 1/2" x 1/2cc pins, it's either these or 23 gauge 1-1/2" pipes

2. I was wondering if I could use them twice back to back- 2) 1/2cc shots with the same pin for like site inj.'s

3. How well can I draw winny with these? Do I need Tokk. type or Zambon to be able to draw?

thanks guys any help is appreciated.
-tigertat