Two factors limit OAL–magazine length and throat length. The heaviest spitzer bullet OAL as shown in your manual for your cartridge will normally reflect the maximum suggested OAL. You should also open the floor plate of your magazine and roll your loaded rounds through to be sure they will clear. Next, assemble a dummy round with the chosen bullet to the exact OAL you tested in the magazine. Chamber it carefully. Note the feel of the bolt handle when closing. Open the bolt and carefully eject the dummy round. Inspect the bullet just above the mouth for any signs of contact. If in doubt, smoke the bullet and repeat the chambering exercise. Copper showing in small smudge points indicate contact.