To get more current flow you can cut your magnet wire into smaller pieces and wind them in parallel. If you cut your wire into 3 pieces you would have a 50 ohm coil. 5 pieces a 30 ohm coil. 10 pieces a 15 ohm coil. I think you can see where the math is going here. as the resistance lowers the current will go up and will be divided btween the multiple wires. You can also experiment with winding the coil around a piece of steel or iron pipe. And you may have to play with timing your pulse (be careful, you will also produce some pretty good sparks from that coils, and they can shock!!!