IT IS A MUST FOR EVERY RELOADER TO READ THE RELOADING SAFETY RULES. Pressure is measured at the case mouth or from inside the case according to the CIP.ĭO NOT ATTEMPT ANY EXTRAPOLATIONS. These test methods have been deemed to be safe throughout the world. The listed maximum loads have been determined according to the respective CIP/SAAMI maximum pressure specification, whichever is lower. The data given here were obtained in laboratory conditions following strictly the CIP (Commission International Permanente) Jand Novemrules. We wish you successful reloading with Vihtavuori premium rifle powders! DisclaimerĪll of this reloading information has been provided by Nammo Lapua Oy and Nammo Vihtavuori Oy. 300 AAC BLACKOUT: Barrel: 16' Twist: 1-10' Primer: WIN WSR Bullet Diameter. Please note that due to safety regulations, we can’t suggest or recommend loads or bullets that are not available on this site. The listed maximum loads should never be exceeded. All the rifle loads on these pages are pressure tested according to the C.I.P. charge weight in grams and grains as well as muzzle velocity in meters and feet per second. For flexible usage, we provide our reloading data in metric and imperial dimension systems, i.e. On the list below, you can find all the rifle reloading data we have currently available. In your short barrel they may actually be slow on the bottom end of the load range.Rifle reloading – handloading data for rifle calibers 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. The loads listed in that datasheet include 8 of the 11 subsonic. 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. Load data for Hornady 190 gn Sub-X (300 blk) - AR15. 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". Hornady BLACK ® ammunition features versatile loads optimized for excellent performance from America’s favorite guns. Start high and work your way down to subsonic. 300 Blackout 208 gr A-MAX ® Hornady BLACK ®. 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. 300 Blackout (Using 178/180 GR Hornady Bullets) Warning Notes: This data was shot by Brian Pearce, Wolfe Publishing Company. I picked up some 30 cal 220gr ELD-X pills at cabelas. JasonPegg wrote:Hey guys, I am fairly new to reloading.
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