cartridge poping out of magizine???

I have an old 110 pre accutrigger(has bushing in sear spring) chambered in 6-284 and when i pull back the bolt to feed a round somtimes it will pop the cartridged right out of the gun before i can chamber the round? I have tried bending the spring all over the place and it either pops out or doesnt have enough spring to push the round up high enough for the bolt to grab it. it is a long action and its the flat spring not the coil. any idea? thanks in advance

GENTLY and LIGHTLY bend the lips of the mag box in. NOT too much.

that was the ticket!! thanks a ton.
jesse