With all that is going on I have been doing more reloading for my handguns . For self defense ammo I have always bought top quality factory rounds. I shoot a few to check function and thats it trusting they will expand as advertised. I recently bought 500 124gn JHP for my 9mm's for reloading. The question came up how do I know they will work? What type of testing should I do? This became a question I had to have a answer for. Well I'm somewhat limited as to what I can do at the house as far as shooting goes. I do not recommend this but I filled a 5 gal bucket full of water and shot down into it from a ladder. I was impressed with the results the bullet expanded , cracked the bottom of the bucket. I don't know do you guys test your hollow point ammo? How?