RE: was sighting in my shotgun need help
A few ???'s
1. Rifled or smooth barrel?
2. Scope or rifled sights?
3. What slugs?
4. Are you letting the barrel cool down between shots?
5. Have you cleaned the barrel at all?
6. What type of rest are you using? Is the forearm or the barrel sitting on the rest?
Many different factors. Could be anything.
CJW