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All things 300 AAC BLACKOUT
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PostPosted: Tue Oct 27, 2015 3:25 pm 
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Silent But Deadly
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Joined: Mon Nov 26, 2012 8:14 pm
Posts: 1726
Location: Kansas
Updated 9" & 16"AR w/ Pistol Gas:
viewtopic.php?f=141&t=96399

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"America will never be destroyed from the outside.
If we falter and lose our freedoms, it will be because we destroyed ourselves."

Abraham Lincoln


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PostPosted: Mon Nov 02, 2015 4:35 am 
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Silent But Deadly
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Joined: Mon Nov 26, 2012 8:14 pm
Posts: 1726
Location: Kansas
9" AAC barreled SBR, 0.098" gas port
Seekins Precision lower
Colt M4 stripped upper
Spikes NiB lightened FA BCG
Giesselle SSA-E fcg
MVB ARC pdw stock
C buffer
Aimpoint Pro RDS
100 yds
240gr Leatherhead
7.8gr LilGun
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_________________
"America will never be destroyed from the outside.
If we falter and lose our freedoms, it will be because we destroyed ourselves."

Abraham Lincoln


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PostPosted: Mon Nov 02, 2015 8:45 pm 
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Joined: Sat Sep 13, 2014 11:27 pm
Posts: 46
All groups fired at 60 degrees, about 300 ft of elevation, not sure on humidity.

AAC Handi Rifle
16" 1 in 7 twist Barrel
180 gr HP with gas check and sized to .309"(RCBS #30-180-FN) Purchased from Western Bullet Co
5.2 grains of Unique
LC resized bras
1.86"
935 Avg fps with a Stdev of 9.7(from a 5 shot group)
Very consistent and quiet

AAC Handi Rifle
16" 1 in 7 twist Barrel
130 gr RN sized to .309"(Lyman #311410) Purchased from Western Bullet Co
4.9 grains of Unique
LC resized bras
1.83"
1088 Avg fps with a Stdev of 16.6 (from a 10 shot group)
One round went super sonic.

AAC Handi Rifle
16" 1 in 7 twist Barrel
130 gr RN sized to .309"(Lyman #311410) Purchased from Western Bullet Co
4.5 grains of Unique
LC resized bras
1.83"
1012 Avg fps with a Stdev of 29.8 (from a 10 shot group)
Seemed sensitive to powder position in the case. I tried to tip the rifle back to get the powder to the bottom before each shot

AAC Handi Rifle
16" 1 in 7 twist Barrel
130 gr RN sized to .309"(Lyman #311410) Purchased from Western Bullet Co
5.0 grains of Trail Boss
LC resized bras
1.83"
1057 fps Avg with Stdev of 12.4 (from a 10 shot group)
I liked this load a lot better than the ones I tried with Unique. It's what I'm going to load the rest of the 130 gr cast bullets I have with.


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PostPosted: Tue Dec 01, 2015 2:38 am 
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Joined: Mon Oct 19, 2009 11:46 am
Posts: 38
Location: North Carolina
Edit: I will be reevaluating and updating this load as soon as possible. After shooting more of these cartridges over greater distances I realized they are very slightly supersonic. Conditions were high humidity, ~285 feet elevation, ~50 degrees Fahrenheit. I will ladder load the H110 down and report back. Until then this load is good to go and will likely be subsonic in certain conditions, but not as at quiet as it could be (or will be).

Hand loaded cartridge
145gr Missouri Bullet Company coated cast
10gr H110
COAL @ 1.9-1.95"
Winchester Small Rifle Primer
Formed Lake City recycled brass
Slight crimp

Shot from
Stoner rifle format custom pistol build;
8" Noveske Barrel, 1/7 twist, matched gas block and tube
M-16 profile bolt carrier group
H2 weight recoil buffer
SilencerCo Specwar 762 suppressor

Not chrono'd yet, but running consistently subsonic. Recoil thumps reasonably more than factory loaded Hornady 208gr Subsonic cartridges. Recovered projectiles had slightly mushrooms and deformed when shot into sand (personally I don't care to hunt game with subsonic ammo) these would create a MUCH larger wound channel than SMKs or A-Maxs, which do not deform at all.

ALL of the coating was completely gone from the recovered projectiles--for that reason I am a little concerned about barrel leading if I were to fire a large number of these. I ran some FMJs through the barrel after, followed by a bore snake, and have noticed no leading with 4 rounds fired.


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PostPosted: Mon Apr 25, 2016 11:00 pm 
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Joined: Thu Mar 31, 2016 6:06 pm
Posts: 24
I recently received some 220gr RN powdercoated bullets from Leatherhead and started to work up a load.

Chris from Leatherhead promptly returned a few emails providing me suggestions on COL (2.055 - 2.065) and potential loads for Lil'Gun.

I worked down from 8.2gr to 7.2gr of Lil'Gun and have settled on 7.6gr. I'm loading on a Dillon xl650 and have the powder drop set to 7.6gr (=/- 0.1gr).

Rifle: AR15 using a VLTOR A5 extension with A5H0 (3.8oz) buffer and FailZero AR-15 BCG
Barrel Maker, Contour, Gas Length/Port Size: Ballistic Advantage, Hanson Profile barrel with pistol gas and gas port size of 0.100 (opened up from factory 0.093)
Barrel Length and Twist: 8.3" 1:7inches
Magazine Brand/Size: Brownells 20rd USGI
Bullet Used (grain, manufacturer, type): 220gr Leatherhead RN powder coat
Powder Charge and Brand: Lil'Gun 7.6gr
Case Used: Converted LC brass
Primer Used: Sellier & Bellot SRP
COAL: 2.060
Chronograph Velocity (20 rds):
High = 1028
Low = 960
Avg = 989
ES = 68
SD = 17
Any issues or problems: Occasionally the last round will hold-open on the carrier not the bolt.


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PostPosted: Sat May 21, 2016 10:22 pm 
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Joined: Tue Apr 08, 2014 3:48 pm
Posts: 32
Rifle Used: AR built from parts.
Barrel Maker: AR-Stoner Barrel AR-15 300 AAC Blackout Medium Contour
Barrel Length and Twist: 1 in 8" Twist 16" Stainless Steel
Magazine Brand/Size: All loads split between a pmag, hexmag and a troy battle mag.
Bullet Used: Lee 309-230-5R With gas check reamed out, Hitek coated.

Todays load tests show I need to check my gas port hole size.
No supressor used, waiting to spring it from jail in many months.


Powder Charge and Brand: Reloader7 11.0gr
Case Used: LC converted
Primer Used: CCI small rifle
Fed fine and BHO on last round
Chrony average: 1075 fps

Powder Charge and Brand: Reloader7 11.3gr
Case Used: LC converted
Primer Used: CCI small rifle
Fed fine and BHO on empty mag
Chrony average: 1129


Powder Charge and Brand: Lil Gun 8.0 gr
Case Used: LC converted
Primer Used: CCI small rifle
Ejected fine but did not strip a round. No BHO on last round
Chrony average: 1082

Powder Charge and Brand: Lil Gun 8.4 gr
Case Used: LC converted
Primer Used: CCI small rifle
Ejected fine but did not strip a round. No BHO on last round
Chrony average: 1152

Powder Charge and Brand: Lil Gun 8.8 gr
Case Used: LC converted
Primer Used: CCI small rifle
Ejected fine but did not strip a round. No BHO on last round
Chrony average: 1175


Powder Charge and Brand: H110 8.6 gr
Case Used: LC converted
Primer Used: CCI small rifle
Ejected fine but did not strip a round. No BHO on last round
Chrony average: 1034


Powder Charge and Brand: H110 9.0 gr
Case Used: LC converted
Primer Used: CCI small rifle
Ejected fine but did not strip a round. No BHO on last round
Chrony average: 1099

Powder Charge and Brand: H110 9.3 gr
Case Used: LC converted
Primer Used: CCI small rifle
Ejected fine but did not strip a round. No BHO on last round
Chrony average: 1116


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PostPosted: Sun Jun 05, 2016 12:01 pm 
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Silent But Deadly

Joined: Sun Apr 06, 2014 10:30 pm
Posts: 267
Noveske 8.2" SS upper, JP H2 SCS
1/7" twist
G3 PMAG 30 rd
203 gr Palmetto Projectiles coated cast
9.5 gr H4227
mixed cases, mostly LC
CCI 400
COAL
1048 fps, sd 6
Cycled flawlessly suppressed and unsuppressed. Bolt locked back on empty with and without the can.


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PostPosted: Fri Dec 07, 2018 12:42 pm 
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Silent But Deadly
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Joined: Sun Sep 15, 2013 6:34 pm
Posts: 2254
Location: Texas Gulf Coast
Remington Model 7
Factory barrel
16", 1:7, suppressed w/ TBAC 30P-1
Magazine N/A
NOE 247, coated, sized .309, nose sized 300, Alloy 2.1%Sb, 3.3%Sn, 0.5%Cu
7.0 gr. AA #9
Reformed LC brass, trimmed to 1.368"
CCI 400
COAL 2.205"
997 fps average, ~7 SD
Five round 1.5 MOA @100. Expands well with new NOE HP pin dimension. This size/OAL puts the driving band well into the throat and prevents powder coat shaving and fliers. .310 works well, too, with slightly increased velocity.


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