Free: Contests & Raffles.
Is there an advantage to 115’s?
https://www.luckygunner.com/labs/self-defense-ammo-ballistic-tests/
From my perspective, it isn't like hunting ammo where there are hundreds of thousands of cases every year along with personal experience. 99.9% of people won't ever use self defense ammo. Thus, the only thing available is very thin data virtually exclusively from LEO encounters where sufficient documentation exists.Many LE organizations will only use one of a very few choices, they go with what the big departments spec out.From that, I only consider ammo that has been used and documented and proven. I think there are many other good choices, but they haven't and likely won't ever be proven because the use cases are so small relatively. I placed zero credibility on jello tests, phone books, milk jugs, cow bones or whatever else has been thought up.The ammo is often very expensive and somewhat difficult to find, but a small box or two will last a very long time. Run a magazine or two to verify operation in your mag/gun combo and then rest assured you did the best preparation possible. I went an extra step and ran a couple of tests with near full and near empty mags and limp wrist, but there is only so much you can do. My view is to find something that is known to work and then go about your business.