kludge said:
Not to pick nits... but...
I prime by hand and check by feel that the primer is not too high or loose... I load single stage and charge each case one at a time then check powder level with a light for each batch.
I believe my reloads are high quality, but as an engineer with an understanding of MIL-SPEC and AQL and statistics, I will never likely have a large enough sample size to statistically guarantee that my ammunition will have an acceptably low failure rate for self defense
and you use 15 year old primers?.... see what I mean.... not sure what you need to draw a conclusion about reliability, but I know that factory loads have let me down more than my own, per capita if you will... clearly that information doesn't hold water for every reloader in the world, it all depends on how careful you are in all aspects of reloading.
Lets say we agree that you won't have a large enough sample of rounds (both factory and reloads) to "statistically guarantee that [your] ammunition will have an acceptably low failure rate for self defense.".... do you have a big enough sample of shooting factory loads to make this claim?.... so really all it needs to be is as good, or better than factory loads... right?
so we have to use other means to determine the most likely result and go from there.... use the information you
do have....
Either way.... We know either you made a mistake in reloading (likely not completely seating the primer, or using ancient primers and/or powder), or the manufacturer of the primer did (hard to argue given they sat for 15 years).... but the primer being faulty is easily argued to be just as likely to happen in a factory load (unless you are deadset on using substandard components for reloading *read 15 year old primers* and you buy good quality factory loads to compare, which is what you have done here).... as with any component, what you can buy for hand loading is every bit the quality of that used by a factory (better than some factory loads)... therefore, they are out of the equation....
So now we are down to a variable of ONLY YOU making a mistake being the difference between factory loads reliability and yours.... again, arguably YOU can be MUCH more vigilant about the production quality of your SD rounds than a factory can.... you can hand weigh and confirm every round is set right, crimped right, and generally the best you can find anywhere... no comparison...
Honestly, I think you just need to put a few more reloads down the barrel being very careful about the build to get your confidence back...