Load Catalog: Subsonic, All other Powders and Bullets

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Peace
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Posts: 163
Joined: Sat Jan 19, 2013 11:01 pm
Location: Virginia

Re: Load Catalog: Subsonic, All other Powders and Bullets

Post by Peace » Sun Dec 22, 2013 8:55 am

Rifle: Custom w/ Aero Precision COP Upper
Barrel Maker: Noveske, Pistol Gas Port
Barrel Length and Twist: 10.2", 1:7
Suppressor: TBA Phalanx Ti .308
Magazine: PMAG M3 20 round
Bullet: Sierra MK 220 grain HPBT (blemished)
Powder: IMR 4198 from 1997
Case: FC
Primer: Wolf SMR
COAL: 2.20"
Chrono:
10.3 grains, 5 shots = 1040, 1037, 1054, 1064, 1041
HIGH: 1064, LOW: 1037, AVG: 1047 , SD: 11
Temp: 62

Notes: All rounds performed perfectly...no fail to load or eject. No signs of unburned powder. All rounds were sub-sonic to the ear.
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stevejohn
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Re: Load Catalog: Subsonic, All other Powders and Bullets

Post by stevejohn » Wed Dec 25, 2013 7:05 am

Rifle: Custom SBR
Barrel Maker: Alpha Shooting Sports
Barrel Length and Twist: 10.5", 1:8, pistol gas
Magazine: USGI 20 round
Bullet: Hornady 220 gr RN Interlock
Powder: IMR 4227
Case: LC
Primer: Wolf SRM
COAL: 2.00"
Chrono:
10.5 gr, AVG 1001, ES 23, SD 11
10.7 gr, AVG 1039, ES 26, SD 14

Notes: No crimp. Perfect feeding, and bolt lock-back.

dbooksta
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Location: S.E. PA

Re: Load Catalog: Subsonic, All other Powders and Bullets

Post by dbooksta » Sat Jan 04, 2014 4:11 pm

LC-4227-225-SB

Rifle: Noveske Rogue Hunter upper, NiB-X BCG, JPSCS-15 Silent Spring System
Barrel: Noveske Stainless, pistol gas
Barrel Length and Twist: 16", 1:7
Muzzle: AAC Cyclone
Magazine Brand/Size: Lancer L5 AWM 20-round
Bullet: Hornady 225gr OTM, hBN coated
Powder: IMR4227 9.4gr (0.71cc)
Case: Remington
Primer: Remington 7.5
COAL: 2.20"

100% function on 20 rounds tested. (Note that these do not appear to cycle without a suppressor.)

First 10 were uncoated bullets. Muzzle velocity avg 1019fps, range 971-1053, Stdev = 28fps

Second 10 were coated in hexagonal Boron Nitride (hBN). Muzzle velocity avg 1023fps, range 1004-1055, Stdev = 16fps.

QuickLOAD estimates max pressure at 40kpsi.

Update: Ran another 60 with 9.2gr IMR4227. 100% function with 20 rounds each:
  • Coated bullets, Remington 7.5 primers: avg 1058fps, range 1007-1085, Stdev = 19fps
  • Coated bullets, FG205M primers: avg 1054fps, range 1021-1081, Stdev = 17fps
  • Uncoated bullets, Remington 7.5primers: avg 1059fps, 1035-1081, Stdev = 12fps
Last edited by dbooksta on Wed Jun 18, 2014 9:23 am, edited 1 time in total.

paper9
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Re: Load Catalog: Subsonic, All other Powders and Bullets

Post by paper9 » Sun Mar 09, 2014 1:10 pm

TRAIL BOSS
4.5 gr
FED 205 primer
2.035 oal
110 gr bullit weight
16" bolt
BARNES TSX FB 30835
Average 992 fps
Max 1046 fps
Min 889 fps
13 shot sample

A1680
10.5 gr
REM 7.5 primer
2.21 oal
208 gr bullit weight
16" bolt
HORN BTHP 30733
Average 970 fps
Max 1017 fps
Min 927 fps
15 shot sample

Magneto Speed Chronograph

paper9
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Re: Load Catalog: Subsonic, All other Powders and Bullets

Post by paper9 » Sun Mar 09, 2014 1:15 pm

MODEL 7/MICRO 7, 16 INCH
MAGNETO SPEED CHRONOGRAPH
POWDER VV N320
PRIMER FEDERAL 205
REUSED HORNADY BRASS
BULLIT HORNADY HP FB #2010
WEIGHT 110 GR
NO CRIMP, NO FILLER

POWDER 5.5 GR
OAL AVERAGE 2.0179
V AVE 1206
MAX 1280
MIN 1097
5 ROUND SAMPLE, ONE WAS 3 – 4 FEET HIGH

POWDER 5.2 GR
OAL AVERAGE 2.0105
V AVE 1152
MAX 1175
MIN 1075
6 ROUND SAMPLE, ONE HAD UNCERTAIN IMPACT LOCATION

POWDER 4.9 GR
OAL AVERAGE 2.00975
V AVE 1104
MAX 1149
MIN 966
6 ROUND SAMPLE, ALL ON TARGET

NO KEY HOLES, OF THE 15 OF 17 THAT WERE VISUAL ON THE PAPER.

THE EXTREME SPREAD IS HIGH AND 2 OF 17 FLEW WAY OFF COURSE, PROBABLY WILL CONTINUE WITH TRAIL BOSS.
Last edited by paper9 on Sat Jul 26, 2014 11:18 pm, edited 1 time in total.

Dochartaigh
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Re: Load Catalog: Subsonic, All other Powders and Bullets

Post by Dochartaigh » Sun Mar 23, 2014 6:08 pm

AAC Handi-Rifle, 300 BLK, 16.1" barrel, 5R 1:7" twist
Xtreme Bullets, 150 grain flat-point, .308", Copper Plated
5.0 grains of Alliant American Select
Winchester Small Rifle primer
2.0" OAL, taper crimp

1044 FPS Average

Praeger
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Posts: 14
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Location: Maryland

Re: Load Catalog: Subsonic, All other Powders and Bullets

Post by Praeger » Wed Apr 23, 2014 7:20 pm

AAC Model 7, 300 AAC Blackout
Barrel Length: 16.1"
Twist: 1:7
Bullet: Sierra Match King 180 gr HPBT
Powder: Hodgdon 4198, 11.5gr
Case: Reformed Remington 5.56
Primer: Remington Small Rifle Primer
COAL: 2.210"
Chronograph Velocity:
Hi-1035 fps
Lo-977 fps
Average-1004 fps
Es-58 fps
Sd-19 fps
Comments: 1" groups at 50 yards fired from bench rest bipod. Competition Electronics Pro Chrono Digital.

BretJ
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Re: Load Catalog: Subsonic, All other Powders and Bullets

Post by BretJ » Sat Apr 26, 2014 6:50 pm

AR15
Novske
8"", 1:8 Pistol length gas system
Colt, 20RD
208gr Hornady A-Max
10.5gr IMR4198 (Several years old)
LC 5.56, reformed
CCI #400
2.25"
3 rounds chronoed: 1009, 1003, 1013FPS
Cycles like a champ with JP Silent Capture Spring. Bolt locks on last round.
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dubhelix
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Posts: 21
Joined: Thu Apr 03, 2014 7:56 pm

Re: Load Catalog: Subsonic, All other Powders and Bullets

Post by dubhelix » Sun May 04, 2014 1:07 pm

Noveske Rogue Hunter / SWR Octane 9HD
Noveske Stainless Barrel, Pistol Gas
16", 1 in 7 twist
MagPul PMag 10
200 Grain Sierra Match King
10 Grains Accurate 5744
R-P 300 Blackout Brass trimmed to 1.350"
CCI #41 Military Small Rifle Primers
COAL = 2.20" (+/- .005)
Velocity unknown, subsonic.
Failure to chamber occurs on occasion, cause unverified.

Noveske Rogue Hunter / SWR Octane 9HD
Noveske Stainless Barrel, Pistol Gas
16", 1 in 7 twist
MagPul PMag 10
208 Hornady Amax
10.3 Grains Accurate 5744
Hornady 300 Blackout Brass trimmed to 1.350"
CCI #41 Military Small Rifle Primers
COAL = 2.25"
Velocity unknown, subsonic.
Feeds, ejects, and locks back on empty.

andrewtac
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Re: Load Catalog: Subsonic, All other Powders and Bullets

Post by andrewtac » Mon May 26, 2014 12:03 pm

AR15
Suppressed Carbine - Leonidas (Liberty)
8.2", 1:7
GI mags
220 gr Sierra MK
H110 - 9.5,9.75,9.95,10.2
LC 5.56, reformed to 300BLK
Wolf small rifle
COAL - 2.26"
Velocities 985,1038,1056,1104
Zero Issues so far. All feed, fire, and eject fine (to include bolt staying open after last round).
SD - 6.4, 11.3, 11, 24.5
velocity spread (fps) 14, 38,34,52

9.5 and 10.2 loads shot at 75F & 30.11; 9.75 and 9.95 77 F & 30.06

All loads were done on my Lee Loadmaster; I had to use the .61 cavity and some sand paper to get to 9.95 and 9.75 (I shot the 9.5 and 10.2 and then determined 9.7 would be right were I wanted it; first .61 cavity I took to much out of, so decided to try it; then did another). For weights I am doing two powder drops and dividing (hence the .05 measurements). The are pretty consistent, but still a progressive; and a Lee. I am going to go with the 9.75 @ 1038 fps load, hopefully keep me subsonic year round.

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