I don't crimp any of my reloads including 500Jeffrey, 505 Gibbs but
if you don't crimp, try to make sure your sizing die is on the small size
so it keeps a good amount of neck tension.

Also, if out in the field walking and shooting, keep a check on the tip
of the last 2 bullets in the magazine to make sure they are not getting
battered under recoil AND that the bullet isn't being pushed in.
Or use Woodleigh Protected Point bullets which stop tip deformation
under recoil.

Finally, you can use 235gn bullet for light game and 300 for heavier game
and you may / should be able to get them to shoot to the same point of impact.

Good shooting

500 Nitro