Yes, you can. 23 might be a little better choice if it is all the same to you. I use 25's for delt injections.
Depending on how your boldenone is made, you might get by with 25's everywhere. Takes a bit longer to inject but feels better and may leave less scar tissue. In general if you aren't sure what to go with...
1.5", 23 gauge for quads, glutes.
1", 23 or 25 gauge for delts.
