Best powder for 300 blkout
- Thread starter GrantB
- Start date
try 300blktalk.com, lots of folks over there share load data, especially for your 10.5" barrel. You might want to post what type of gas system you have, and whether your port is stock or enlarged. They will want to know for sure if you post a question like that.
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Powder type is going to be the same regardless of barrel length as the 300blk uses magnum pistol powders that are designed to burn up quick in a short barrel. While I havent loaded for an sbr yet (waiting on the stamp) basically your charges will be slighty heavier than a 16" load if youre tuning for max velocity. H110 is the ticket for me and A1680 for subs. Lil gun is widely used but H110 seems to be more accurate but does need to be run on the verge of compression to keep the pressure curve in line. For 125s you'll probably end up around 17.5-19 of H110.
I have grown to like lil gun for the supers. Most of ours are 10.5" guns with pistol length gas systems. 125 speers at 18.9.
H110 works better in my Noveske 10.2". Lil gun shows signs of pressure below velocities that I can get out of H110. H110 seems to have the edge in accuracy (for this rifle at least). I use a Lee factory crimp die - helps keep things consistent in a gas gun.
Curiosity - what velocity are you getting from this combo? I'm running 18.8 H110 with Nosler 125 Ballistic Tips and seeing just under 2100 FPS (10.2" barrel)
>>>WORK UP. THIS LOAD IS OVER WHAT'S LISTED AS MAX<<<
Winchester W296 is identical to the H110 and might be easier to find, FYI. Anything with "Hodgdon" on it is hard to find these days. Some say it is identical but a bit of load data sometimes shows a a .5 grain difference at times. Not a big deal if working up, I pretty much plan on treating them the same.
You wanna donste some of those tnts to charity, and by charity I mean me. Those things have been out of stock forever.
Every now and then you see them around. Just picked up 1000 of them from gunsamerica. Keep lookin, they are out there.
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same here . switched to 125 TNT's last year and kept my eye-out & finally picked up a thousand . I dont do to much paper with TNT's , only hunting with them so 1-k will last me a while .
also use H110/W296 in my 8.2 upper and my 16" boltgun & Works great in shorty or 16" . & TNT's (imho) they are the best all around performer for high-Vel. and also reasonably priced. (when you find them).
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When I find them, I stock up. They were tough to find for a bit during the "panic" but they are coming back, like most other components. I try to keep at least 5000 in my inventory for shortage times.
I like lil-gun but I also load for a 458 socom and a taurus raging bull chambered for 480 ruger so one powder pretty well covers 3 calibers I use 1680 for subs . I have not tried the speer bullets yet but picked up 300 hornady sst 125's . I will get to them after hunting season since I already have my rifles sighted in with 110 v-max.
Ive had my notifications set on grafs and midway for a while. Where are yall getting them from? Gunsamerica has nothing on their site.
19.2g H110
CCI 400 Small rifle primer
Lake City reformed brass
Speer 125 TNT @ 2.050" COAL- no crimp
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