Hello /k a quick question please. Is there a way to calculate

Yeah, it's called a gun chronograph.

Ehrm... Without that instrument available?

>>33381449

Shoot it from a semiautomatic or otherwise non revolver through a chrony and then shoot it from the revolver and the difference is the velocity lost

>>33381969
Some ranges let you rent a chrony

>>33381982
>shoot it through a semiauto
No. Shoot it though a manual action with an ideal barrel length

OP bere, found this.

http://www.ballisticsbytheinch.com/22.html

You think it is accurate?

>>33382073

Well if op is trying to see the velocity loss he should fire it through a manual action with the same length barrel as the revolver.

Speaking of which, does. 22lr use rifle powder?

Calculating it manually would be a nightmare without making a lot of (unsafe) assumptions. Lacking a chronograph I would recommend modeling your barrel, chamber and projectile in some sort of CAD software and importing it into a mechanics FEA package. Set the correct friction coefficients and then first apply the spec pressure to the bullet then do the same for a lower pressure (spec - pressure loss from cylinder gap).

Sounds like a lot of work t.b.h. - would probably be easier to just rent a chronograph.

>>33382131
It should use powders with a burning rate in the ballpark of those used for 9mm/40S&W, speaking of standard, high velocity .22 ammo

>>33381969
It would be much easier to buy/rent a chronograph than to not only find a proper formula but also calculate it properly with 100% certainty that you didn't make a mistake or forgot about something.

>>33381449
Not really. You need to chronograph it.

>>33382126
Maybe. Only way to find out is to test it yourself.

See that's the thing. You can't be sure if you don't actually test it.