Taipan Veteran Short 25?

Hello fellow would someone tell me information about the barrel of Taipan Veteran Short 25:
1. Twist rate?
2. Left or right?
3. Length – 350 mm?
4. With or without choke?

Approximate speed with 2.2 grams of pellets JSB Exact King Heavy Mk 1/2?

Approximate number of shots from 150 to 130 bars?

How much does the rifle weigh with your optics?

Greetings.