Loads that carry more shot and powder.
Yes, they are all high brass and considered magnum loads
Is it chambered for magnum shells? If not, the answer is NO.
Depending on the gr/ the harder you squeeze the more speed the bullet travels(lol)/
When were 3inch magnum
A shotgun.
NO. You clean a barrel with a cleaning kit. Magnum loads are fired only in arms designed for them.
An Ithaca model 51 magnum 3 inch shotgun is worth $275-$325, depending on condition.
Your Browning auto-5 magnum shotgun which has a 2V prefix identifies your shotgun as a Browning auto-5 magnum model,which was made in the year 1962.
Buy a reloading manual.
Magnum
Your Browning auto-5 magnum shotgun was made in the year 1960.
Best left to a gunsmith