With the Thor, you will notice any SLIGHT change in bore diameter. My advice, push the Thor down and then point the barrel down at the floor and give the butt pad a good work out and see if the bullet unseats. If not, chances are that it never will move off even in the field.
Good call. That is a very serious concern. You don't want a projectile to move off the powder charge.
I'd go even one step further. Remove the breech plug, push a Thor down from the muzzle and then see how much tension there is by using the ramrod from the breech end. I'd want to "feel" some resistance.
One other thing. A loose fitting projectile could potentially cause ignition problems with BH209.
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Is there a reason why I don't have the same experience with PBs?
The plastic skirt on PBs is flexible.
