![]() ![]() Trail boss- good for lighter grain subs, can work for heavy subs but requires almost a full case and a very compressed load.Īlliant Red Dot - Works well for heavy subs, but very extreme spread for lighter grain subs. ![]() Powders for subsonic single shot, bolt action Vihtavuori N120 Sierra lists it for super thru sub sonic loadings for 300 whisper.ĪA#9 Sierra lists it for super thru sub sonic loadings for 300 whisperĪA#5 Sierra lists it for light weight supersonic loadings (135gr and lighter) for 300 whisper, However other powders give much higher velocity.ĪA#7 Sierra lists it for light weight supersonic loadings (135gr and lighter) for 300 whisper, However other powders give much higher velocity.ĪA2015 is listed in some super sonic loadings for 150gr and above. Winchester 296 - this is the same powder as H110Īlliant 2400 can work for both subs and supersĪlliant 300mp seems to show promise for super sonic loadings May not function some 16 inch carbines gas systems. Hodgdon LIL'GUN Seems to work good for subs and supers. VihtaVuori N110 Sierra Lists for subs and super sonic loadings for 300 whisper. Powders that have been tested and tried by others. Powders that clearly work and have been tested thoroughly be AAC. This may be ongoing and won't necessarily be complete for a while. If you see something not right let me know, by also giving supporting reasoning. I may add notes to the original Post to each powder, with the understanding that sometimes what works for one gun combo may not work for another gun combo. This will not be for specific loads, although some may be listed, but will be broken down for supersonic powders, subsonic powders, powders that work for both, as well subsonic powders for bolt action and single shot, and may be broken down more as things progress. It is a beginning and the list will be adjusted and or modified as things progress. So this is going to be a List of powders that can be used in the 300 blk. Often powders that are way to slow to be used effectively in the 300 blk. They are constantly asking about powders. Lots and lots of guys on 300blktalk have played with 1680 and CFE BLK for heavy supersonics so might want to take a look at their experiences.There tends to be a lot of newer 300 blk owners, and re-loaders joining lately, and I believe that will continue to grow. You can play a little bit, try loading them at 2.22" and see if they feed and cycle fine, it'll allow you a slightly higher charge and lower pressure. Well it'll really depend on your COAL, because AA1680 and CFE BLK don't mind being slightly compressed but you'll have to watch for pressure sign.ġ68 SMK 2.18" 19.2 - 19.7 -> Be careful 19.7 is max book load.ġ75 SMK 2.18" 17.8 - 18.4 -> 18.4 is max load. Obviously a good chrono is a must when loading subsonics. ![]() I prefer to be in the 980-1020FPS range but some people like to be in the 1040-1060 range, it really depends on your outside air temperature. Now I can run Lapua 200gr with 8.3 gr 2.15" OAL and still be in the magic 1000-1020 FPS range and hold the bolt on last round.įor 220 GR with N110, start at 9.0-9.5gr and work your way down to 8.0-8.5. Stock I couldn't get it to cycle reliably with those fast powders unless I used heavy SMK 240s and run them in the 1080fps range. My 10" Noveske has no issues now that I use a JP SCS with the tuning kit and Faxon Low mass BCG. If you have a can, it'll help a lot, otherwise it might still work depending on your GB port size, BCG and buffer balance. But n110 is a faster powder than 1680 or CFE BLK so you're on the edge of reliability for a typical 300blk gasser. ![]()
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