I shoot a lot of shockwaves in my Omega. I use the 250gr.
and the only way I can get them to load is to use the
Harvester crushrib sabot. My omega is 50cal. Tried once
to load the speer bullets, don't think I could get them
loaded with a sledge hammer. I've ordered some 300 gr.
Barnes expanders and hope to shoot them soon. Hope
your friend finds his problem.