Quick Comment on Recent F Class John Primer Pocket Cleanliness Test

Generalizability of results from testing to broader situations can occur when situations are similar and there is excellent test methodology and adequate sample sizes. The purpose of this video is to briefly describe a particular example of generalizability. In a test I conducted two years ago, I found the cleaning primer packets had no effect on ballistics or precision:    • Witch Doctor: Primer Pockets - To Cle...  
The rifle cartridge was a 6BR, bench rest rifle (less than 12.5 pounds in weight), shot from a bench. And shot 100 yards. In contrast, F Class John conducted the same type of test with a larger cartridge, F Class rifle, shot in the prone, and at 300 yard:    • Does cleaning brass primer pockets ma...  
Results from both tests were the same. Results suggest that there can generalizability in findings across shooting disciplines.