Ejection Charge Testing with FFFFg (2013-06-19)

Testing 0.5 grams Goex FFFFg in 1/4" X 3/32" X 7/16" latex rubber tubing. This is quite a difference from the test with Titewad powder...

Ejection Charge Testing with Titewad (2013-06-19)

Testing 0.4 grams Titewad smokeless powder in 1/4" X 3/32" X 7/16" latex rubber tubing with my Perfectflite StratoLogger altimeter.