First step would be to get some snap caps to experiment with and keep the live ammunition out of it.
No worries, those are not live rounds, the power was removed and primers blown and bullets placed back in.
It looks to be a new rifle ???
From the scratches on the round I would say you have burs / sharp / snags in the lips of the mags
Does it pass the tilt test
It's a dummy round that has been loaded many times, that's why it's all scratched up.
Yes, passes tilt test flawlessly.




















































