evening all..... i thought my ears were burning...
Basically, tennis elbow or lateral epicondylitis as it's known is an injury that is caused by repetition and as shooting is very repetitive, quite common. It is where the tendons that attach to the bony bit in the elbow become inflammedirritated (different views in the medical world on this). As Nicola suggested, changing the grip can help (tennis players and cricketers often put more than one grip on their rackets and bats to help this). Also, like Matt suggested, a brace can help if you get the correct one and also if you fit it correctly. Physio (exercises - strengtheningstretches) are advised to help move the condition on. Anti inflammatories (gel if you can't take tablets) are also useful as is using an ice cube to massage the area post exerciseactivity. Again, as Matt said, it is a self limiting condition that will eventually go away but by changing the grip, using the NSAIDS, Ice massage, exercises you can speed up the healing process and relieve some of the symptomspain.
Cortisone injections are still used but I find that it can get rid of the pain temporarily but you have not really addressed the problem...... You need to aks yourself why you have the problem and how can you make any changes that will prevent it from coming back.
Happy to answer individuals queries, please PM as it can get a bit confusing on an open thread....