Is it chambered for magnum shells? If not, the answer is NO.
Loads that carry more shot and powder.
Not recommended.
Yes, they are all high brass and considered magnum loads
Depending on the gr/ the harder you squeeze the more speed the bullet travels(lol)/
With the right loads and choke, yes
Find a good gunsmith.
There is no one answer. Try different loads and see which ones you are competent with then do penetration tests.
The original Marlin Goose Gun, designed for waterfowl hunting, was introduced in 1936. This shotgun featured a 3-inch magnum chamber, making it suitable for heavier loads needed for hunting geese. It was a significant development in shotgun design during that period.
Occasionally there will be a 10 Gauge shotgun for sale in your local sporting goods shop -if you don't see one, ask the clerk for a catalog- or possibly a pawn shop. If you are lucky, you may find an ol' double-barreled 10-Gauge, but some of them have "Damascus twist" barrels and can't handle modern loads.
The Baikal shotgun is generally designed to handle standard loads, but whether it can safely handle magnum loads depends on the specific model and its construction. Always refer to the manufacturer's guidelines and specifications for the exact model you own. If you're uncertain, it's best to consult with a knowledgeable gunsmith or the manufacturer directly to ensure safe usage. Using inappropriate loads can lead to safety hazards and damage to the firearm.
The gun is probably set for heavy loads with the friction rings, and the loads are too light. Remove the forend. Inside the wood forearm may be a diagram to show how the bevels and brass friction ring should be set for light vs heavy loads. If no diagram, go to Browning .com and there you can find a diagram, but remember to find the Mag 12, it is different from a standard A-5. When shooting heavy 3" loads, set the rings to heavy. When shooting 2 3/4 lighter loads set for light.
NO. You clean a barrel with a cleaning kit. Magnum loads are fired only in arms designed for them.