Colt Trooper vs. Python cylinder length

[denul]

Curious if anyone knows about the difference in the length of these two revolver cylinders. Friend is wanting longer Keith type cast to shoot, possibly in a Trooper Mark 3, if its cylinder is longer than the Python. All I can go by are photos, which looked like Trooper had a fairly short cylinder as well.

[Guesser]

My Trooper MK III---1.591"
Python----------------1.561
My guns; my calipers

[denul]

That'swhy I love this site...thanks!

[Guesser]

Just for reference, from my memory........All my Colt 357 cylinders were longer than any of the Smiff &W Model 27 and 28 357's I've ever loaded for. That is the primary reason I no longer own a Smiff &W 357 revolver......and a couple other valid for me reasons!!