Depends on the field. Many fields say semi only and allow you to play without a cap. Most tournament series use a bps cap of 12.5 no matter what firing mode you are using. Best to ask the field you are playing at though that is something which should have been covered in the "safety briefing" most fields do before they start playing each day and the periodically throughout the rest of the day as well.
CFOA/PSP Certified Referee