![]() 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. 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. 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. ![]() With high-quality cartridge cases and primers, Subsonic Ammunition offers the performance and accuracy shooters have come to expect from Hornady.JasonPegg wrote:Hey guys, I am fairly new to reloading. 300 AAC Blackout bullet in Subsonic Handgun has built a world-class reputation for accuracy and stopping power. ![]() Performance of Sub-X Centerfire Rifle Ammunition Subsonic meets or exceeds FBI Protocol terminal ballistic test requirements. If you need the quietest firepower possible for sneaking up on game, arm yourself with some dependable Hornady 300 Blackout 190gr Sub-X Subsonic Rifle Ammunition – 500 Rounds 300 AAC Blackout 190gr Sub-X Centerfire Rifle Ammo is designed with the patented Flex Tip insert within its hollow point cavity for reliable expansion even at lower velocities. This 300 Blackout Ammo from the professionals at Hornady features special powders that deliver a low flash signature, and when combined with a silencer, this ammunition provides maximum stealth for sneaky hunts. Features of The Hornady Subsonic Ammunition 300 AAC Blackout 190 grain Sub-X Centerfire Rifle Ammunition lets your efficiency do all the talking. Unique powders optimized for subsonic use result in a low flash signature, ideal for either suppressed or unsuppressed performance. Hornady® Subsonic Ammunition doesn’t have the loud report of a supersonic round, and paired with a suppressor, it’s even quieter. Hornady® Sub-X Centerfire Rifle Ammunition - designed for accuracy and performance below the speed of sound - now comes in both rifle and handgun loads. 300 AAC Blackout has a lot of consistency from lot to lot. Long grooves in its gilding metal jacket combine with the bullet’s flat profile and the patented Flex Tip® insert within its hollow point cavity to help it expand reliably at low velocities, Powders are selected for optimal performance and the Subsonic. The Sub-X bullet used in Subsonic Rifle features a lead core. 300-AAC-Blackout Subsonic Handgun utilizes tried-and-true XTP® bullets that expand reliably at subsonic velocities.
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