There are a variety of factors that can affect velocity. Please reach out to the manufacturer for more details.
https://psearchery.com/contact-pse/#:~:text=CONTACT%20PSE.%20CONTACT%20PSE%20PSE%20Archery%202021-01-12T14%3A49%3A13%2B00%3A00.%20Typical,or%20PSE%20Dealer%20Services%20at%20%28800%29%20477-7789.%20
Please reach out to the manufacturer for that information. https://psearchery.com/contact-pse/#:~:text=CONTACT%20PSE.%20CONTACT%20PSE%20PSE%20Archery%202021-01-12T14%3A49%3A13%2B00%3A00.%20Typical,or%20PSE%20Dealer%20Services%20at%20%28800%29%20477-7789.%20
No you can not.
From the manufacturer. https://psearchery.com/contact-pse/#:~:text=CONTACT%20PSE.%20CONTACT%20PSE%20PSE%20Archery%202021-01-12T14%3A49%3A13%2B00%3A00.%20Typical,or%20PSE%20Dealer%20Services%20at%20%28800%29%20477-7789.%20
I would consult with the manufacturer before moving forward. https://psearchery.com/contact-pse/#:~:text=CONTACT%20PSE.%20CONTACT%20PSE%20PSE%20Archery%202021-01-12T14%3A49%3A13%2B00%3A00.%20Typical,or%20PSE%20Dealer%20Services%20at%20%28800%29%20477-7789.%20
You can find the manual on the manufacturer's page here: https://www.pse-archery.com/product-support/
If you are asking about the accessory rail it will be a weaver style rail. If that is not what you are asking about than please email us at techsales@opticsplanet.com and we can discuss what it is you are asking about.