I see you worked it out 

https://www.henryusa.com/news/henry-commits-operations-to-the-state-of-wisconsin/

Slim

I rather doubt that a primer could push a bullet out of a rifle barrel, probably had a very small amount of powder.  BRS does make a good point.  I'd trust reloads from certain people I know, but no others.  Locally, one long range shooter lost half his hand when his Sharps exploded from smokeless rounds that were highly over-loaded (I don't recall the exact details and they were his own reloads - but still - it's more than just rifle damage that can occur from errant reloading).

As to the the "cockeyed on the carrier" issue, it sounds like the same issue that has plagued a few '73 owners.  There is supposed to be a bevel in the frame opening for the carrier that helps straighten that first crooked round when the carrier rises.  That bevel may be missing or insufficient.  Without addressing the missing bevel (if that is the issue), the workaround may just be sticking a screwdriver or anything similar into the top of the action to straighten the crooked round before starting to fire.  Or using a "pusher stick" or another round into the loading gate to push the rear of the last round loaded over to the left somewhat.

You may have learned the lesson of reloading, on the lucky side rather than the worst side.  Never fire someone else's reloaded ammunition, you just can't trust what someone has done.

Pull them apart and reload the components yourself.
 
Listen to this :: 

Watch your own second video.  The first four shots had just smoke coming from the muzzle but that fifth shot had a lot of flame.  You just never know what is what in someone's reloads.

It's good to hear from the Professor. I remember the cat, but check to see if his fiddle has new strings on it.

Rev. Chase

What Coffinmaker said. 

Least expensive I've seen listed was $166, most over $300.  Sure would be nice if that one was available as a free download the way McDowell's book is.  The McDowell book does have around 70 pages of Remington conversions as well, which is nice.

BUT   BUT   BUT   BUT   I really really liked the Cat!!  Woe is Me 

Hy Ya Perfesser, good to see ya out and about 

  Bob

Might want to go up and post this on SCORRS as well.  Remington guys and gals are mostly on SCORRS.  Just a thought . . . . .

  CatBacker

Some NICE you betcha.  Big 'ol LIKE button