Hodgons load data shows the subs for 300 BLK having a pressure of 18200 psi, well shy of the 55k psi max. I do not have a bullet comparator at this time. 308 diameter bore groove and will be using the same Berry's bullets. If it makes a difference it still has to fit an AR Mag length. I know this doesn't take into account how far the bullet is seated in 7.62x39 vs 300 blk. If I keep the case fill the same will I have a good subsonic load? The math comes out to 14.9 grains of CFE BLK to have almost the same case fill. So my question is can I extrapolate that data to use for 7.62x39? It has a useful case capacity of 2.03cc. If I've done my math correctly then 12.1 grains of CFE BLK uses up 48.2% of the useful case capacity. 300 BLK has a "useful" case capacity of 1.65cc. Using Richard Lee's modern reloading book I see the Volume Measure Density (VMD) of CFE BLK is 0.0657 so that means 1 grain of CFE BLK takes up. I've made some 300 BLK subs using CFE BLK and Berry's 220gr spire points using hodgons reloading data of 12.1 grains of powder. Load data is pretty well non existant but I know it can be done seeing some other posts around. So I would like to make some 7.62x39 subsonic rounds. If you’re interested in using reddit for self-promotion check out our Official Spam Policy. Other Subreddits you may be interested in: They utilized three of the most renowned independent test laboratories in the United States to reconfirm their findings and the safety of each load.tomic. This unfortunately includes reloading components like brass, and projectiles. Due to reddit policies all posts selling, trading, or buying ammunition are forbidden. If you'd like to post reloading equipment for sale, for trade, or a request for something you'd like to buy please put, , or respectively, at the beginning of your title. R/Reloading discord join us for supplies and helpful conversation: Https://discord.gg/reloading Posts titled " Help! New Reloader." will have less responses than a post titled like "Questions about crimp for. Hornady Subsonic Ammunition designed for accuracy and performance below the speed of sound now comes in both rifle and handgun loads. Please make sure you title is relevant to the specific question you are asking. HORNADY SUBSONIC 7.62X39 The following quote is from Hornady’s website, which is followed by their video showcasing the subsonic 7.62×39 in action. I've considered buying a pressure gauge and seeing if I could come up with a 163-grain subson 7.62x39 load, but it will likely be a while before that project comes to fruition.Īlso, it might be of some interest to you that EBR has subson 7.62x39 loads that you can get from SRT or "The Gun Runner".Remember, if you post a picture, make sure to provides some context. 300 Blackout has a slightly longer overall length (2.26 vs 2.2), but the 7.62x39mm has a slightly longer case length (1.528 vs 1.368). I was hoping to get some data for even lower weight projos so I could use M2 AP pulls (163 grains, I believe). Though they are similar in overall size, the. Only problem is that these rounds will not cycle an AK. Very clean burning, excellent accuracy, best so far WLR, WIN Cases flash hole drilled 9/64" pentrated 6 2X4's NOTE: reportedly works good in 1:10" twist and reported good for hunting (not deer, varmits)Ĩ.0gr red dot 70% load density Win Cases, WLR primer flash hole drilled to 9/64" Win cases, WLR primer flash hole drilled 9/64" Military surplus 145gr FMJ-BT seated backlwards no crimp After finding, I e-mailed Peter Cronhelm and he gave me some reloading data a few weeks ago that I've * not tested*: Heh, I just registered to see if I could find out more on 7.62x39 subson myself.
0 Comments
Leave a Reply. |