What are you using to compare load data with? The 22 BR Remington looks to be somewhat similar and it's load data might be of use.
http://www.hodgdonreloading.com/data/rifle
3900 fps sounds like you should be getting a speeding ticket!
3900 fps = 2,659.0909 miles per hour
speed limit = 2600 fps = 2,454.5455 MPH
200 miles per hour over limit. $5.00 per MPH over limit
$1000.00 ticket!
http://www.hodgdonreloading.com/data/rifle
3900 fps sounds like you should be getting a speeding ticket!

3900 fps = 2,659.0909 miles per hour
speed limit = 2600 fps = 2,454.5455 MPH
200 miles per hour over limit. $5.00 per MPH over limit
$1000.00 ticket!

