"what if,what, if,what if" I'm all for common sense solutions but come on guys every question seems to generate no single answer, just a habitual dismantling of the previous answer. remove the bolt put a wooden dowel [this avoids damaging rifling] down the barrel and measure the distance it travels, this will tell you if there is a previous bullet lodged part way down, if the measurement indicates there is only one round present then gently tap the dowel if the bullet moves into the case remove the rod and squirt oil down the barrel this will prevent both powder and primer from causing any further problems. obviously don't stand directly over it but to the side, now tap a little harder and it will come free. clean up the mess and check everything before loading another round. if you don't feel happy about doing any of the above take it to your gunsmith and obviously put the bolt in your pocket and call and tell him your coming with a live round in the chamber. good luck.