I can't stress this enough, the ASG Schofield is amazing. Shoots amazingly well despite having no hop-up. Very accurate.
https://www.etsy.com/uk/listing/1136807925/asg-schofield-shell-set-low-power
You'll have to use these. ASG never made power down shells for the Schofield for some reason. These 3D printed shells are of very good quality and are very affordable!