Since I first became a member of this forum several months ago, I have been telling people repeatedly that it will not harm a gun in good condition to shoot rifled slugs through a full choke. Millions of slugs have been shot through full chokes with no harm. I have also said that the slugs are smaller in diameter than the full choke and that the slugs are very soft lead. Just a few minutes ago, to refresh my memory on the numbers, I cut another slug open and measured it. This was a Remington Express 1 ounce 12 gauge rifled slug.
The slug was slightly irregular in its diameter and I got measurements varying from .685" to .691" at the widest parts of the slug. Most full choke 12 gauge guns are between .695" to .700" at the tightest part of the choke. So, you can see that the slug is actually smaller in diameter than the full choke. Besides, the lead is very soft and could easily swage down to a slightly smaller diameter if it had to.
Personally, I would refrain from shooting slugs through Extra Full chokes or Turkey chokes or something like that because they may actually be tighter than .690", but for full chokes of .695" to .700" in guns in good condition, I would have no fear of shooting rifled slugs through them.
The slug was slightly irregular in its diameter and I got measurements varying from .685" to .691" at the widest parts of the slug. Most full choke 12 gauge guns are between .695" to .700" at the tightest part of the choke. So, you can see that the slug is actually smaller in diameter than the full choke. Besides, the lead is very soft and could easily swage down to a slightly smaller diameter if it had to.
Personally, I would refrain from shooting slugs through Extra Full chokes or Turkey chokes or something like that because they may actually be tighter than .690", but for full chokes of .695" to .700" in guns in good condition, I would have no fear of shooting rifled slugs through them.
