I just emailed and asked the same question the answer I received is below...
Yes. I replaced all plastic ends with my own brass ends, and using tubes with brass ends on my XL750 and both RL and Super 1050s. Ends were iriginally sized for 750. So on 1050 you might need to run ends over 200 grit sandpaper. That depends on your particular press’ dimensions.
Coincidently, I just received review submitted by fellow reloader who uses 1050. It will be posted on website soon.
Be safe,
AP