Hello,
Did some tests with very fast bands and 7,5 mm steelballs again: first under normal conditions - chrony shooting and can penetration. And then speed tests with heated bands. The numbers with heated bands are ALL far about 700 fps??!!
I took a bottle with cooked water to heat up the bands a few minutes before every shot. And then this numbers? Are there any experiences with chrony tests and heated bands. I think, these heated numbers are errors.
But ALL shots with non-heated bands were ok - all around 140 m/s; 460 fps! That`s strange - errors only with heated bands?! To fast for a chrony?
And: the water fast cooled down during the tests - the speed also decreased. The time between the first and the last shot was around 45 minutes.
I used 3 band sets - not more than 5 shots with every set :-(
And still no lengthwise tearing!
After the speed test I did some shots with this stuff on cans: a shot through 2 cans was no problem with this speed and ammo.
At the end of the video you see a little accident ( fortunately without injuries!!).
Here is the vid:
http://www.youtube.com/watch?v=arasZFuCXUA
Regards
Torsten
Did some tests with very fast bands and 7,5 mm steelballs again: first under normal conditions - chrony shooting and can penetration. And then speed tests with heated bands. The numbers with heated bands are ALL far about 700 fps??!!
I took a bottle with cooked water to heat up the bands a few minutes before every shot. And then this numbers? Are there any experiences with chrony tests and heated bands. I think, these heated numbers are errors.
But ALL shots with non-heated bands were ok - all around 140 m/s; 460 fps! That`s strange - errors only with heated bands?! To fast for a chrony?
And: the water fast cooled down during the tests - the speed also decreased. The time between the first and the last shot was around 45 minutes.
I used 3 band sets - not more than 5 shots with every set :-(
And still no lengthwise tearing!
After the speed test I did some shots with this stuff on cans: a shot through 2 cans was no problem with this speed and ammo.
At the end of the video you see a little accident ( fortunately without injuries!!).
Here is the vid:
http://www.youtube.com/watch?v=arasZFuCXUA
Regards
Torsten