Nope...... And I doubt that there would be another variation of bracket for this test. It would be an artificial test if there were. Best test it as it's intended for use. There was another method incidentally. A drop test from a height onto a hard rubber block that simply replicated recoil. This was for workshops without the test-range facility. The bracket used on the slave rifle had the cradle screws replaced with standard screws - just for speed and convenience.