If it's that soft, I'd worry about it contaminating the powder, possibly causing a squib and a stuck bullet. Fire 'em slow, and don't shoot again after one sounds "funny" until you check for an obstruction.
Long ago and far away, I was using a Lee Loader to reload some .44s. My little wife asked if she could help, so I showed her how to weigh the powder and dump it into the cases. Later when I was shooting them, I had one that just went "pop". Thumbed the hammer again, and almost let it go, then something made me stop. Pulled the cylinder, looked down the barrel, and there was the bullet, about half-way down. I still have that bullet, neatly engraved by the rifling with only the power of the primer. Thank you, Jesus! Coulda been really oogly.