yomomma has very sound advice with making test batches for picky rifles. I once had to pull almost 200rnds of .308 after I found out they didn't work in my Norc M14/M1A/M305 and shot like absolute crap in my bolt rifle. Now it's small 10rnd test batches, then larger 50rnd test batches, then, if there's no hiccups, I'll load a couple hundred.
Seeing as they're plated and not jacketed, you may not be able to push them to full velocities in all rifles. Most of the time it'll be fine for plinking but I've had a couple rifles where plated had to be kept to around 2000fps or less to not tumble and keyhole on the paper. Other rifles will eat up plated at full speed no problem. It's a trial and error process.
The Lyman Cast Bullet Handbook gives reduced loads for cast 150gr bullets using IMR3031 of 27.0gr to 32.5gr yielding 1735fps to 2176fps.
My Norc M14 will cycle the action just fine down to 28.0gr of IMR3031 and a 160gr cast bullet. I didn't go lower since I found a good accurate load at 32.0gr (about 2-MoA; decent for cast bullets).
Cast data can be used for plated or even jacketed bullets as reduced loads. I've done it many times in many cartridges and many rifles.