anybody have a load they have worked up that will cycle the lee mold 300 blk 230 grain bullet subsonic?
anybody have a load they have worked up that will cycle the lee mold 300 blk 230 grain bullet subsonic?
Any of the 680 "brands" will work. H116 is one as well. 11.0 grains plus or minus 0.5. Faster powders won't develop the delayed pressure required to consistently work the bolt. ... felix
felix
thank you felix i will now try and located some of these.
I dont know my exact charge, but I used Solo 1250. Worked better than Red Dot in that particular cartrige. Why, I dont know, but it was more accurate and seemed to work really well in my AR.
I came into this world kicking, screaming, and covered in someone elses blood. I plan to go out the same way.
i got mine shooting and cycling great with reloader 7. bullets were cycling at 950 fps. i stopped with 1050 fps with 10.2 grains and bolt locks back on last shot. im using a spikes tactical with wilson combat 16 inch match barrel and carbine length gas system no adjustable block.
OK, then, stay with RL7. Your barrel system is faster than mine, and that is good for subsonic. The 680s are a tad slower, in general. Of course, each lot of each might show a reverse in practice. ... felix
felix
Hello, i want buy an AR-15 ( i thought an Smith a Wesson Model M&P15 Sport) and an .300 BlackOut Upper receiver 12 inch barrel.
I would like to use sub-sonic lead bullets, but the powder that is easier to find in Rome is Vihtavuori (69 Euros/Kg ).
Could you suggest me some mold (i thought about NOE [311-247G-FN-2C-PB]) and reloading data ?
what do you think about 12-inch barrel?
thank you very much!!!
My toys:
STI Spartan .45ACP
HK USP .40 S&W
HK MR-223 .223Rem
Hatsan Escort Pump Action 12 Gauge
My Straight shooter thread
http://castboolits.gunloads.com/show...traightshooter
Thank you very much can i try to give u other details of my future upper in .300 BLK:
twist: 1/10
gas-tube mid-pistol 12 cm
I want buy only upper, no all carabineItalian vendor here.
Here in Italy Vihtavuori is expensive too, but IMR, Hogdgon, Winchester are very rare and more expensive. (Accurate powders nerver seen)
Thank you for mold now i'll send an email to ask them if they ship to Italy
My toys:
STI Spartan .45ACP
HK USP .40 S&W
HK MR-223 .223Rem
Hatsan Escort Pump Action 12 Gauge
9.9 grains of H110 and the Lee 300AAC bullet (mine weigh 225g) cycles in my 16" 1:8 twist AR blackout. The lower is a Spikes with military buff tube and the standard buffer and spring. This load is supposed to be subsonic but I haven't chronied it to verify. CCI small rifle primers and a fairly strong lee factory crimp. Brass is converted Rem 223 commercial. OAL is 2.25"
BB
^^^^that didnt work in mine i tried it up to 14 grs before i saw case pressure and still wouldnt cycle and was hitting 1450 fps
If 14grs h110 didn't cycle with a 200+gr boolit, you've got other problems. I've gotten 160's to cycle with 13gr charges. My 245's cycle at 10.2grs h110. Time to disassemble everything and clean. Measure your gas port, if it's below .095, it's too small. .125 with a carbine length gas system would be desirable. Check your gas tube for obstruction and
either clean or replace. Also check gas port/gas block alignment.
Edit to add: could also try a lighter buffer. 300aac was designed to run with a carbine gas and buffer system, suppressed or not.
Last edited by Jupiter7; 05-20-2013 at 11:41 AM. Reason: Info
My Straight shooter thread
http://castboolits.gunloads.com/show...traightshooter
Generally speaking, I'm +1 with the above advise... My gas port isn't .095 (.070 IIRC, CMMG bbl), but it's way bigger than the port on my 223 barrel... I think lots of guys are having trouble with short (or not) cycling because the port is too small, and there's insufficient gas vented to the system.
I prefer fast rifle powder over magnum pistol powder, but that's just me. I've used both... I just shot 225 grain Hornady j-words and 235 grain cast (Accurate 31-235b) with 10.0, 10.5 and 11.0 grains of A-1680 through my Franken-15... All cycled the bolt, though 10.0 and cast boolits failed to lock the bolt open on the last round.
the real trick on the Blackout to get nearly 100% cycling in heavy subsonic loads is to have a pistol
length gas system..as most are finding with car gas systems you need a larger than norm gas port in the barrel ..
also found on J-words that a light crimp gave me much better accuracy.. still expermenting on the cast boolits .. Shot some Lee 180's with 94/4/2 and got good but not great accuracy.. only poured 2 weeks before .. Their approaching a month old now so hope to try them again Monday .. even light crimped a few to see if there was a difference
just poured 100 lee 230's and powdercoated them last week .. so hope to have some prelim answers next week
when trying the h110 and lil gun powders the load was tested in 4 different rifles. it would not cycle any of them. two of the rifles had a pistol length gas system as well. all 4 rifles cycled with the reloader 7 and we have all been shooting them since last week with out a problem. out of 200 rounds i have only had one fail to feed and i think it was mag related as well as one fail to hold bolt open on last shot.
all four of these guns will cycle fine using the lil gun and h110 when using fmj bullets just not the cast bullets
getting ready to try the lee 230-5R probably Sunday afternoon.. Poured 100 about 2 weeks ago Pc'ed and sized
trying 50% lead and 50 % COWW + tin first since I shooting them subsonic.. interested to see if they will shoot straight ( little worried they may bend/tumble in flight) and hopefully expand well.. Figured I would try soft first and then go harder if necessary ..
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |