How many rounds can you shoot through an SKS before barrel damage?

It depends on the specific model of SKS rifle, the ammunition being used, and the maintenance practices of the shooter. In general, under average shooting conditions, the barrel of an SKS rifle can last anywhere from 5,000 to 25,000 rounds before showing significant signs of damage or accuracy degradation.

Here are some factors that can affect the longevity of an SKS barrel:

1. Ammunition: Using higher-pressure ammunition, such as +P or +P+, or ammunition with steel core bullets, can increase wear and tear on the barrel.

2. Maintenance: Cleaning and lubricating your rifle regularly can help to extend the life of the barrel by reducing the buildup of fouling and other debris.

3. Shooting Conditions: Excessively high temperatures or extended periods of rapid fire can cause the barrel to heat up and lead to increased wear.

4. Manufacturing Quality: The quality of the barrel itself, including the materials used and the manufacturing processes, can have a big impact on its durability.

If you are concerned about the longevity of your SKS barrel, it's a good idea to visually inspect it regularly for signs of wear, such as erosion, pitting, or bulging. If you notice any damage, it's best to consult a gunsmith or firearms expert for further evaluation and possible repair or replacement.