roger7007 Posted September 27, 2014 Report Share Posted September 27, 2014 300 Blackout, Adams piston conversion. Anyone with reload data for 125 TNT , IMR 4227 starting load to get cycling zeroed in. Quote Link to comment Share on other sites More sharing options...
392heminut Posted September 27, 2014 Report Share Posted September 27, 2014 WOW! How did you determine this was the section to post this question? We do have a reloading section and this would probably get more response in there. Quote Link to comment Share on other sites More sharing options...
planeflyer21 Posted September 28, 2014 Report Share Posted September 28, 2014 Wait, what?! Someone's giving away an Adam's Arms .300 Blackout piston conversion with reloading supplies?!? Where do we enter? Quote Link to comment Share on other sites More sharing options...
shibiwan Posted September 28, 2014 Report Share Posted September 28, 2014 Piston on a 300 AAC? Does it even cycle on subs? Quote Link to comment Share on other sites More sharing options...
98Z5V Posted September 28, 2014 Report Share Posted September 28, 2014 THAT. Would be your question to answer here. Time to buy the Adams Arms piston it and make it work. <dontknow> <thumbsup> Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted September 28, 2014 Report Share Posted September 28, 2014 It (supposedly) works on the pistol length gas. A few bARFcom guys have done it. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted September 28, 2014 Report Share Posted September 28, 2014 (edited) I've loaded 130 gr. TNT's & some 125 gr. Noslers , but all with H110. I don't have any loading data for IMR 4227 in 300BLK or in 300 Whisper . I have read of people using it lately because of the non availability of most powders . Just Goggle using imr 4227 for 300 blackout & you get all kinds of Forum talk. There are things you can do to make Subs work on a Carbine gas Piston system , just have to play around with springs & buffers , Even lightening up the BC. I really have no interest in any Piston set up , no matter what they say about it being cooler on the BCG end . It would take some tweaking , but I don't see why it couldn't be accomplished . Edited September 28, 2014 by survivalshop Quote Link to comment Share on other sites More sharing options...
392heminut Posted September 28, 2014 Report Share Posted September 28, 2014 I have absolutely no experience with a piston setup on any AR platform rifle, but 4227 is all I've used in my gas 300 BLK. Can't find anything else in my area to try right now. I haven't loaded any 125 grn. bullets either, but I've loaded about 200 110 grn. bullets with 19 grns. of 4227 and they cycle fine in my 10.3" bbl. with the pistol gas system and my son's 10.5" bbl with pistol gas length. The 19 grn. load is a compressed load and the Sierra load table shows a max of 20.9 grns. for 4227 but it's beyond me how you could even get that much powder in a 300 BLK case! Sierra shows a minimum of 16.2 grns and max of 18.7 grns. of 4227 for the 125 grn. bullets. Don't know if this helps, but it's all I have. Quote Link to comment Share on other sites More sharing options...
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