Boattail slugs, of comparable weight, have less bearing surface. This lets it “teeter/totter” more in the chamber and has a greater chance of misalignment as it enters the rifling. If a tight chamber is present, this may not be an issue. I have not seen a “tight” chamber on factory produced rifles. They make them loose so you can shoot all sorts of ammo.
As for proper sealing, it doesn’t take much. There is a point of tradeoff between sealing and friction losses.
Pellets do not suffer as much from a looser chamber, they almost prefer it to allow the skirt to stay expanded. The nose finds its way to center at the leade and the skirt is already centered. Plus the skirt seals well due to pressure.
I feel that for a slug gun to be consistent, it needs a proper chamber. (Of course it needs a lot of other things as well)
Dave
As for proper sealing, it doesn’t take much. There is a point of tradeoff between sealing and friction losses.
Pellets do not suffer as much from a looser chamber, they almost prefer it to allow the skirt to stay expanded. The nose finds its way to center at the leade and the skirt is already centered. Plus the skirt seals well due to pressure.
I feel that for a slug gun to be consistent, it needs a proper chamber. (Of course it needs a lot of other things as well)
Dave
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