CRofMel Posted January 14, 2017 Share Posted January 14, 2017 (edited) What's the go to quietest and cleanest powder to shoot subsonic 9mm 147gr? Only shooting suppressed pistols with it and suppressed M11/9 smg and currently have RMR 147gr FP plated bullets as well as Berrys 147 FP's. I have been doing a bunch of post digging and see people a few years back were really ecstatic about the Vihtavuori N320 powder with the 147gr, as well as the N330 and N340 powders. People were saying it was the closest to the "Special K" ammo. I have the latest 50th Lyman and 10th Hornady books and there is only one mention of the Vihtavuori using the N340 powder with TMJ 147 9mm, 3.9gr @ 947fps. Is there newer powders out now that are superior to the Vihtavuori for my intended use? Can anybody recommend any recipes with this powder or one they use themselves? I just want something comparative or better than the Federal American Eagle 147gr I currently shoot as well as cleaner because shooting with a can throws everything back into the host. Edited January 14, 2017 by CRofMel Link to comment Share on other sites More sharing options...
MemphisMechanic Posted January 14, 2017 Share Posted January 14, 2017 VV N320 and the new kid on the block, Nobel Prima V, are the two cleanest options that shoot softly in 147gr 9mm which I have personally tried. Since 11 pounds of Prima V was only $178 to my door from Powder Valley a bit back, In sticking with it for a while. That's half the price of N320. Link to comment Share on other sites More sharing options...
iflyskyhigh Posted January 14, 2017 Share Posted January 14, 2017 I've used pretty much every pistol powder EXPECT VN so I can't speak to that. But for ALL 147gr plated round nose bullets I use 4.8grs of HS-6 at a COAL of 1.145". I shoot these out of my G34 suppressed. Quiet, clean, And oh so accurate. This is the only load / bullet combo where I still use plated bullets. I have pretty much given up on plated bullets expect for the 147gr subs because the accuracy just isn't there. But the accuracy with these two handed no rest at 20 yards is re-dic-ulous! Plated bullets used are Berry's, Extreme, Frontier, and Rocky Mountain. All work great with this load. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Taroman Posted January 14, 2017 Share Posted January 14, 2017 I've loaded 147s with just about every powder. N320 gave me the lowest SD of all. Soft and accurate. LTCFP 147 N320 GR 3.4 LO 951 HI 983 AVG 965 ES 32 SD 10.79 Link to comment Share on other sites More sharing options...
thompsoncustom Posted January 14, 2017 Share Posted January 14, 2017 (edited) Quote quietest and cleanest powder to shoot subsonic 9mm 147gr? n310 but it's not for a new reloader or the faint of heart. Edited January 14, 2017 by thompsoncustom Link to comment Share on other sites More sharing options...
iflyskyhigh Posted January 14, 2017 Share Posted January 14, 2017 I've loaded 147s with just about every powder. N320 gave me the lowest SD of all. Soft and accurate. LTCFP 147 N320 GR 3.4 LO 951 HI 983 AVG 965 ES 32 SD 10.79Not quite as low but pretty damn close. Created: 10/19/16 10:21AMDescription: Frontier 147gr PRN 9MM G34Notes 1: Hornady 0.355 FMJ/RN ENC 35597 147 0.675Notes 2: 4.8grs HS-6 Lonewolf Barrel (4.8grs AA#5 Avg 940FPS)Distance to Chrono(FT): 5.00Ballistic Coefficient: 0.212Bullet Weight(gr): 147.00Temp: 83 °FBP: 27.70 inHgAltitude: 1218.00# FPS FT-LBS PF12 885 255.69 130.10 11 906 267.97 133.18 10 866 244.83 127.30 9 876 250.52 128.77 8 860 241.45 126.42 7 896 262.09 131.71 6 869 246.53 127.74 5 889 258.01 130.68 4 889 258.01 130.68 3 885 255.69 130.10 2 899 263.85 132.15 1 901 265.02 132.45 Average: 885.1 FPSSD: 14.7 FPSMin: 860 FPSMax: 906 FPSSpread: 46 FPSShot/sec: 0.1True MV: 887 FPSGroup Size (in): 0.00Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
iflyskyhigh Posted January 14, 2017 Share Posted January 14, 2017 Not quite as low but pretty damn close. Created: 10/19/16 10:21AMDescription: Frontier 147gr PRN 9MM G34Notes 1: Hornady 0.355 FMJ/RN ENC 35597 147 0.675Notes 2: 4.8grs HS-6 Lonewolf Barrel (4.8grs AA#5 Avg 940FPS)Distance to Chrono(FT): 5.00Ballistic Coefficient: 0.212Bullet Weight(gr): 147.00Temp: 83 °FBP: 27.70 inHgAltitude: 1218.00# FPS FT-LBS PF12 885 255.69 130.10 11 906 267.97 133.18 10 866 244.83 127.30 9 876 250.52 128.77 8 860 241.45 126.42 7 896 262.09 131.71 6 869 246.53 127.74 5 889 258.01 130.68 4 889 258.01 130.68 3 885 255.69 130.10 2 899 263.85 132.15 1 901 265.02 132.45 Average: 885.1 FPSSD: 14.7 FPSMin: 860 FPSMax: 906 FPSSpread: 46 FPSShot/sec: 0.1True MV: 887 FPSGroup Size (in): 0.00Sent from my iPhone using TapatalkI've gotten single digit SD's with HS-6 but you have to run it quite a bit hotter. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
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