Lift time?

[bohicarlp]

Can anyone tell me if there is a general rule of thumb on Chinese and American Shells for lift time. For part of my finale, I am wanting to go for an effect with 3, 5, and 6 inch shells all busting approximately at the same time. Thanks.

[bohicarlp]

This is what I found online. Would anyone agree on the delays?

caliber time height radius
3 3 400 125
4 3.5 550 175
5 4 700 210
6 5 775 250
8 6 950 400
10 6.5 1075 425
12 7 1175 450

[Mattp]

I would think that seems about right. theres probably a formula to go by. . but im not sure if thats something that would vary slightly between brands and different effects.. if you have more product than you plan to use amd the time to do it. .. may want to run a test..

[Mattp]

I found this chart.. a little off from what you found... but not far off.. and id say that manudacturer def makes a slight difference too.. also on the heights ive always heard rule of thumb is 100' up for each inch of shell
Delay Size
2.5 2.5"
2.8 3"
3 4"
3.6 5"
4.2 6"
4.8 8"
5.6 10" could be as low as 5.3
6.2 12" could be as loas as 5.8