![]() ![]() In your short barrel they may actually be slow on the bottom end of the load range. It's longer than the ELD and weighs more, so those loads will be safe, but possibly fast in a 16" barrel. In your case, depending on powder used, I would substitute data for a 230 Berger, I know both Accurate and Hodgdon have data for it. The reason for doing this would be knowledge gained, giving you a better idea of how this all works. You can use the data and load as a single shot, working the cartridge length down, watching for pressure signs. If the COL, like in your case, is longer than magazine length by doing that, the load will be safe to shoot, as long as it does not seat into the lands of the barrel. I have a little twist in Rebel's method that allows a pretty quick conversion of bullets in data.Ĭase length + bullet length - COL= seated depthĬase length + bullet length - seated depth = COLĬonfirm that the bullet is not seating in the lands of your barrel. Accurate's load data divides it into sub and super sections, so you can actually see what a max pressure load is. If it is related to pressuure, start in the middle. Keep in mind that most data for 200 grain plus data is for subsonic velocity, not max pressure, pay attention to that, it gives a little wiggle room for loads if max is related to velocity. You're on the right track comparing lengths, weight and seated depth. Easiest is to join a forum and say "give me load data for this combo". Start high and work your way down to subsonic. Since you will be developing subs, the deeper the bullet the more pressure i.e. Not sure what powder you have, but if using 1680, you can check recommended sub charges and quickly ensure you are not compressing. The new 190 gr Sub-X (Subsonic eXpanding) bullet features a lead core. I would make a dummy case to 2.25, measure base to ogive of another eld bullet, then measure cartridge base to ogive and subtract the case length to determine how much bullet you have in your case. HORNADY SUBSONIC 300 BLACKOUT, 190GR, SUB-X, 20/BOX Hornady 300 Blackout Subsonic Ammunition is designed for accuracy and performance below the speed of sound. How should I go about starting to develop this load? I will be shooting out of a 10.3" AR with a pistol gas tube. A 220gr SMK is recommended at 2.260" COAL. The 9th ed Hornady manual has load data for a 225gr bullet, but upon researching it, the bullet is 1.558" long. Got o looking afterwards, and there is zero load data available for the 300 BLK with this bullet. I picked up some 30 cal 220gr ELD-X pills at cabelas. ![]() Subsonic rounds do not exhibit a supersonic crack making them quieter when shot through your favorite can.JasonPegg wrote:Hey guys, I am fairly new to reloading. 5 creed rem 700 mountain rifle but not a big fan of the 6. Please Note : Subsonic loads are ideal for shooting through suppressors because they help reduce the sound signature. Hornady 180 grain ELD-M Match Ammunition The 7mm PRC Patriot Predator features a. The 190 grain Sub-X (Subsonic - eXpanding). This ammunition is new production, non-corrosive, boxer primed, in reloadable brass cases. Hornady 300 Blackout Subsonic Ammunition is designed for accuracy and performance below the speed of sound. ![]() This ammunition is built for defense purposes and for hunting medium sized game (50 to 300 lbs) including whitetail deer. Performance of this ammunition meets or exceeds FBI Protocol terminal ballistic test requirements and delivers devastating, threat-ending performance. The Sub-X bullet (projectile) features a lead core with long grooves in its gilding metal jacket, which combined with the bullet’s flat profile and the patented Flex Tip insert within its hollow point cavity help it expand reliably at low velocities. Unique powders optimized for subsonic use result in a low flash signature, ideal for either suppressed or unsuppressed performance. As all Hornady ammunition the Black series is proudly made in America, this Hornady Black 300 AAC Blackout ammo is able to deliver the highest quality needs for every shooters requirement. 300 AAC Blackout 190gr Sub-X Subsonic Flex Tip eXpanding 20/Box is designed for accuracy below the speed of sound, and when paired with a suppressor, it’s even more quiet. ![]()
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