I have fit a number of Maximums back in the mid 80's when I had my shop open. It was very popular back then. Some fit, most did not. You can cut the web between the horns of the lever to lower the load posion an get them to fit some times.

If you grind the trough in the top of the breech block the blocks can and do sometimes crack. Remember the breech block is your "locking lug".

Some of my colleagues were warning about chamber bulging, but I never saw that. Only cartridge I saw chamber bulging in the cadet was the .225 Winchester.