No ...edit...i mean YES mate...mate...shoot em off in the rifle should be fine...(make sure barrel is ftee of obstruction)...but you say they wont chamber so how will you close the bolt...?
To be honest, if i had 50 odd, id consider to knock out the primers & take them up the farm & throw them in the camp fire for a second or twos' minature fireworks fun...
You could (this is what id do) FL or Neck size the ones not cracked--just remove the pin from stem in the die...then 3/4 fill them with trailboss & seat old bullets for a little plinking fun...just shoot sh1t like cans full of water...or pumped up soft drink bottles with a little builders chalk in em...cos you can...!!
I cant be bothered with oil--i hear it will soak in & kill a primer, but why waste a cap
--id love to buy a cap gun like we had as kids...you'd have no idea how many Indians i shot in my parents back yard, despite the fact some always got away...!!--infact even when i had to be the indians, i ran out of ammo & shot all the cowboys...!!
I really was a John Wayne legend when i was 9 yo...
Ok...so im still a boy at heart...
Shoot em off mate...it'll take less time to resize, load & shoot em off, than to hand in somewhere...
The man who knows everything, doesnt really know everything...he's just stopped learning...