I've now changed the zero distance to 50yd if you want to talk about a "100y and in" rifle. I'd imagine your hold under (with either setup, honestly) between 25-75 would be pretty large. Never really looked at it or thought about it. 300BLK rifle and just a generic chart for the drop out of a 9mm pistol is not going to tell you anything.ĮTA: And to be honest, I'm not even sure 100y would be a good zero distance for a subsonic pistol cartridge. 300BLK subs and whatever PC subs you're comparing or the drops are going to be way different. You have to make sure zero distance is the same between the. View QuoteHow far you're dropping at 100y is really going to depend on zero distance. If budget is as large of a concern as it seems to be in your case, OP, I think 5.56/.223 is easily the smarter choice, even if you have to deal with a 1"-2" longer barrel. 223 stockpiled already, so that lowers your ammunition costs for practice (arguable the most important part of employing any firearm in an offensive/defensive capacity), and to top it off, quality 5.56/.223 defensive loadings are significantly cheaper than their. Even with the slower velocities 5.56 reaches out of a 10.5" barrel, you'll still have a couple hundred yards inside the expansion envelope of most quality defensive loadings. Now, where the Blackout does rein king is in the ability to switch to supers, which are going to be ballistically superior to pretty much any pistol cartridge.Īs to OPs question, my recommendation would be to spring for a 10.5" 5.56/.223 upper and splurge on some quality factory expanding ammunition (like Fusion, Gold Dot, etc.). 300BLK does nothing better (at least ballistically speaking) than a subsonic PCC. Honestly (and this is my opinion, so it's worth what you paid for it), subsonic. Running the numbers through Strelok, comparing the 208gr AMAX loading to the 147gr XTP and 230gr XTP, all at 1050fps and zeroed at 100, they're all within an inch of one another out to 150y and within a few inches at 200y. Even something like the subsonic 208gr AMAX load from Hornady (the 208gr AMAX projectile has a decently high BC) has a stupid amount of drop outside of 150ish yards when zeroed at 100. 300BLK, and velocities and weights (and therefore, energy) are very similar between the two.Īs for better ballistics, not really. You're essentially relying on the bullet poking a large enough hole (which is pretty much restricted to the diameter of the bullet, unless you're using an expanding projectile) to do damage. Velocities are low enough that you're not getting much, if any, stretch cavity, so there's nothing gained there. View QuoteEnergy (at least in this scenario) really doesn't play a large part in wounding.
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