mini 14

[Barsmash]

I have a mini 14 in 300 whisper. I got the gun from some one that could not get it to work. The rifle does fires and the action cycles ½ way. It will not load the 300 whisper round out of the 223 clip. The bullet jams in the action like it is not loading straight. The action cycles 1/2 way open when fired. Has any one made a mini 14 work in 300 whisper? Can any one point me in the right direction?
Andy