RAW 25 CAL 1000x for Silhouette

I really enjoy shooting Rimfire silhouette. I also have a Anschutz 8002 Hunter Black model (.177) that I use for indoor practice. I have used my RAW 25 CAL for offhand practice but WOW , is this thing heavy! Has anyone found a way to knock 2-3 lbs off of a RAW to make it suitable for practice? 
My 22 Rimfire practice range is about 30 minutes away but I can shoot my RAW in my big back yard. Sure would like the convenience of shooting in as real of conditions as possible without the drive.
 
My pre air force hm 1000 x in the chassis
IMG_20210720_184342918.1646353832.jpg