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Subsonics - All Calibers

More results: Hornady 285hpbt with Trail Boss (19.0= 1100 fps, 17.0 =935 fps, 16.5 =890, 16.0=860 fps). 17.0 was the most accurate (.3) followed by 19.0 (.5).
 
300 blk 208 amax load

Here are my specs for reliable cycling:
Cmmg 8.0" barrel
H2 buffer, standard m16 bcg (Mobil1 synthetic 5w-30 for lube)
AAC SDN-6 can


208 amax lc cut down brass
CCI 400 primer
Hodgdon Lil Gun 8.2 gr
2.135 oal with med crimp

1050 +-25 fps

**NOTE the gas port on the factory cmmg barrel is .093. This is not sufficient to cycle with this can/load/powder. I enlarged gas port to .109 (7/64 bit in drill press) to get 100% reliable cycling, and it does not overpressure the 110 gr Barnes factory loads.

Use/modify at your own risk.
 
mijp5 said:
I see guys posting 150 RN over 9+ grains of trail boss going subsonic. I just loaded 7.9 grains and I am still supersonic. This is out of a 20" barrel, 1:12. Frustrated as all hell
Click to expand...

Do you live at a higher elevation? That's a very relevant piece of information, and I don't see a lot of posters sharing that.
 
Here's my 9mm subsonic load. Its stupid quite, light recoiling and very accurate.

Glock 19
Suarez RMR Match Slide
Lothar Walther Match Threaded Barrel
RMR RM06
Rugged Obsidian 45 (45 endcap)

3.8g N340
Xtreme 165g Round Nose
Federal Brass
CCI 500 Primers
1.165" COAL
914fps

Loaded on a Dillon XL650 with mirror polished powder dispenser, Uniquetek Precision Powder baffle, Uniquetek Micrometer Powder Bar and Redding Micrometer seating die. I shot 30rds over my LabRadar which showed 914fps and an SD of 9.9. The most consistent pistol load Ive ever shot.

[IMG2=JSON]{"data-align":"none","data-size":"full","height":"968","width":"726","src":"https:\/\/i.imgur.com\/qmslMrU.jpg"}[/IMG2][IMG2=JSON]{"data-align":"none","data-size":"full","height":"548","width":"730","src":"https:\/\/i.imgur.com\/humDWo8.jpg"}[/IMG2]




25yds 5 Shot Groups [IMG2=JSON]{"data-align":"none","data-size":"full","height":"775","width":"590","src":"https:\/\/i.imgur.com\/NjZ0I4T.jpg"}[/IMG2]




25yds 10 Shot Groups [IMG2=JSON]{"data-align":"none","data-size":"full","height":"851","width":"542","src":"https:\/\/i.imgur.com\/nANReKW.jpg"}[/IMG2]




50yds 10 Shot Group [IMG2=JSON]{"data-align":"none","data-size":"full","height":"693","width":"551","src":"https:\/\/i.imgur.com\/eBaGlTp.jpg"}[/IMG2]






 
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.308
20” 1-10 twist
Lapua brass
190gr SMK’s
10.3gr Trail Boss
Sellier and Bellot LRP
1052 FPS
Sub .75 groups @ 100yds



Sent from my iPhone using Tapatalk
 
Rem 700 .308 12 twist
Sierra 150 rn
9.8 gn Trailboss, CCI 200
The 150s with the flat base stabilize well.
 
Rem 700 .308 16.5" AAC-SD 1:10" twist, TBAC 30P-1.
175 Nosler RDF, Lapua brass, CCI BR-2 primer.
No case alternations at all, FL re-sized with 0.001" shoulder bump.
9.5 grains Trailboss thrown from Chargemaster.
2.850" COAL, 0.210" jump to lands.
1055 fps, 34 ES, 13 SD via MagnetoSpeed.
0.8 MOA for 5 round groups out to 200 yards.
Nice round holes on poster board at 200 yards as well.
3.0 mils low from supersonic zero at 100 yards.
4.5 mils low at 200 yards from a 100 yard zero.
 
My .223 loads are:

Lapua case 1.750"
winchester small rifle primer
Hornadys 55 gn V-max With CANELLURE
Hodgdon Trail Boss 4.2 Gn
OAl. 2.250"

Rem700 5R tactical 1:9"
Sea Level
83 Farenheit
10 feet chrono speed

1. 1054 ft/s
2. 1045
3. 1059

1/2 MOA at 100 y

Using same of everything but
For Hornadys FMJ 55 gn
OAL 2.200"
Trail Boss 3.7 Gn

1.1078 ft/s
2.1069
3.1087
 
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My .308 Subsonic loads

Lapua case 2.005"
Hornady 220 GN Round Nose Interlock
Hodgdon Trail Boss 14.1 GN
CCI LARGE PRIMERS
OAL 2.735"

TIKKA T3 TACTICAL 24"1:11 TWIST
SEA LEVEL
83 FARENHEIT
SPEED CHRONO 10FT

1.1082 FT/S
2.1102
3.1098

1/4 MOA AT 100Y

HORNADYS 178 GN ELD-X
LAPUA CASE 2.005"
TRAIL BOSS 10.1 GN
OAL 2.800"

1.1070 FT/S
2.1062
3.1059
 
I tried it with some Hornady 150 fmj (3037). It was only around 25% case fill, which made me a little nervous. I can't recommend it for 308. Trail Boss
or N32C (Tin Star) will be your best options.
 
.308 1:12 twist
Sierra 150 gn rn pro-hunter
9.8 Trailboss
CCI200
Random brass trimmed at 2.005
The 150 rn has a flat base that helps with the 1:12 twist. Did not keyhole, and works great suppressed.
 
Getting ready to load my first subs. My can come in 45 days does the below look okay?

DPMS Recon GII
16in Barrel
178grn Amax
Trail Boss start at 9.0 work up to 10.4
2.800 COAL

So I test with no can for speed and to make sure they are not tumbling correct?
 
I would start high and work low. You don’t want anything stuck in your barrel. What’s your twist rate?
 
combatgrunt84 said:
1:10 twist do I need to still flasholes out?
Click to expand...
I’ve never had to open up or use a flash hole deburring tool. Shoot your paper at distance to see when it will keyhole. The more you shoot the better (50-100). If you don’t get perfect circles, you may need to increase velocity or choose another bullet.
 
combatgrunt84 said:
Getting ready to load my first subs. My can come in 45 days does the below look okay?

DPMS Recon GII
16in Barrel
178grn Amax
Trail Boss start at 9.0 work up to 10.4
2.800 COAL

So I test with no can for speed and to make sure they are not tumbling correct?
Click to expand...

You didn't mention it, so I'll jump in for good measure.

After working down to your desired velocity with a chrono and the suppressor OFF the rifle, set up a paper target 5yds downrange and put a few rounds into it, spacing them apart a few inches. Look for any out of round holes before attaching the can.

Keyholing at distance will be bad for accuracy. Keyholing at the muzzle is bad for accuracy and your suppressor.

I've done this for every subsonic load I've worked up in a number of different calibers and rifles and have had no issues with baffle strikes.
 
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The First String was only 5rnds I was unable to get setup in time. I also was unable to reset between strings to the get the SD and ES numbers as well. This is without Suppressor, no keyholing at 100yards the 10.6 and 10.3 grouped the best all within 1.5inches for me.

Gun: DPMS GII Recon 16inch Factory Barrel
Hornady Brass TTL. 2.005
Flash Hole Resized
Pockets Uniformed
FL Resized and Neck Resized to: .332
COAL 2.790
178grn Hornady ELX Match
CCI Large Rifle Primer
Measure 10ft From Barrel to Chrono

Temp: 83
1022.5 Baro Pressure
27.4 Wet Bulb
26.9 DP
88.5 Rel Humidity
-245 flt Altittude
10.6grain Trail Boss

1077
1028
1059
1034
1071
Avg Velocity: 1053

10.3grn Trail Boss
1077
1025
1059
1034
1071
Avg: 1053

1052
1049
1068
1055
1054
Avg: 1055

10.0grain Trail Boss
1025
1026
1040
993
1017
Avg: 1020

1012
1012
1028
1014
1028
Avg: 1018

9.7grains Trail Boss
983
990
998
981
992
Avg: 988

991
996
978
986
1007
Avg: 991
 
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combatgrunt84 said:
The First String was only 5rnds I was unable to get setup in time. I also was unable to reset between strings to the get the SD and ES numbers as well. This is without Suppressor, no keyholing at 100yards the 10.6 and 10.3 grouped the best all within 1.5inches for me.

Gun: DPMS GII Recon 16inch Factory Barrel
Hornady Brass TTL. 2.005
Flash Hole Resized
Pockets Uniformed
FL Resized and Neck Resized to: .332
COAL 2.790
178grn Hornady ELX Match
CCI Large Rifle Primer
Measure 10ft From Barrel to Chrono

Temp: 83
1022.5 Baro Pressure
27.4 Wet Bulb
26.9 DP
88.5 Rel Humidity
-245 flt Altittude
10.6grain Trail Boss

1077
1028
1059
1034
1071
Avg Velocity: 1053

10.3grn Trail Boss
1077
1025
1059
1034
1071
Avg: 1053

1052
1049
1068
1055
1054
Avg: 1055

10.0grain Trail Boss
1025
1026
1040
993
1017
Avg: 1020

1012
1012
1028
1014
1028
Avg: 1018

9.7grains Trail Boss
983
990
998
981
992
Avg: 988

991
996
978
986
1007
Avg: 991
Click to expand...

Thanks for doing the leg work for me. Have same rifle.
 
this thread is awesome but a mess!

i just started loading for my FN SPR with 1/10 twist 24 bbl. 308. using my ultra 7 30cal (no i did not shoot them with the can on it initially)

i started from the only manual i saw from hodgedon. i used 155 palma bullets and 12 grains of trailboss then 11 grains.

12 was going 1436 AV
11 was 1357 AV

i have a ton of 190's to try. i think i'll start with 11 grains and then try 10.
 
cruze5 said:
this thread is awesome but a mess!

i just started loading for my FN SPR with 1/10 twist 24 bbl. 308. using my ultra 7 30cal (no i did not shoot them with the can on it initially)

i started from the only manual i saw from hodgedon. i used 155 palma bullets and 12 grains of trailboss then 11 grains.

12 was going 1436 AV
11 was 1357 AV

i have a ton of 190's to try. i think i'll start with 11 grains and then try 10.
Click to expand...

I’d go right to 10.0 with the 190s personally, but I’ll bet you end up around 9.5gr. With a 20” barrel 10.0gr was a bit fast still, so I went to 9.5gr. Same barrel at 16” gives me around 1050fps with moly’d 170gr FP and 10.0gr.
 
same rifle no can:
10 grains with a 190SMK= 1102

9.5 grains 190 SMK= 1043.

next trip i'll have to load 9.5 again and verify with the ultra 7 on
 
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Most of my load data is with maker Bullets. If you’re not shooting them, you should be.
 
Markhammett said:
Most of my load data is with maker Bullets. If you’re not shooting them, you should be.
Click to expand...

Never heard if Maker bullets. Just looked over their sight, the subsonic expanding bullets look interesting. Have you used any of the .224 bullets or only the
308.

Also, besides Trailboss. Unique makes a good 223 subsonic load. My data:

20in barrel 223 savage 110

LC brass
55gr SP
Unique 4.0 gr
COL : 2.20
 
Just .308. I never really saw a need to load .224 cartridges subsonic. Didn’t really feel I would gain much over 22lr. I’ve killed a pile of hogs and deer with 200 grain makers. Can’t say enough good about them.
 
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Light weight 308 loads

I skimmed through but the lightest I saw was 150gr

I want to try 125gr in 308 / 10 twist. Anyone tried that setup? Any thouhhts?
 
I would be carful trying to push that light of a bullet at subsonic speeds with that much case capacity. 300 blackout is another story. 4 grains of trailboss and a 125 out of a 300 blackout is pretty sweet.
 
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Rem 700 / aac tactical 16 in 1/7 twist.
Aac 762 sdn can.

12.1gr Cfeblk , 220g rnfb hornady interlock, cci 400.
Neck tension is 0035-004 and a medium crimp, ( also used in a sbr).

Not a lot of measurable difference between brass yet.

Cold 40 degree rainy day at 750 altitude, 1015 fps.
A bit slow but will not crack in 100 degree heat. I do need a hot day crono test to see if I can go more on powder.

Its running at 1 moa in the bolt gun.

20200409_110753.jpg
 
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Markhammett said:
Most of my load data is with maker Bullets. If you’re not shooting them, you should be.
Click to expand...
Found Maker bullets after seeing this thread, so thanks for that. So glad I did. These things are slick. Between these, Barnes, and LeHigh, I’m set. Pictured below is the Maker 125 grain BLK high velocity fracturing and 200 grain sub-sonic expanding. These will be used in both a shorty bolt action and AR 10.5” pistol. I’m considering deer hunting with the Maker subs this season.

Edited to add: I’ve had best accuracy with 125 TNT’s using 18 grains of H110 and 296, but haven’t shot the 125 Makers yet. Used 6.0 - 6.5 grains of Titegroup for the 200 grainer out of the bolt action for Hollywood quite. I’ve got CFE BLK to try with the pistol when it gets completed. With the LAW folding stock adapter and TBAC U7 it should make a handy little side kick.
 

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16" with suppressor savage axis 2 155g Lapua Scenar, 10g Trail Boss OAL. 71.82mm
Grouped ok for first time 100mts .

Lot of fun to play with this load . 1045fps
 

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Guns&WhiteWater said:
Found Maker bullets after seeing this thread, so thanks for that. So glad I did. These things are slick. Between these, Barnes, and LeHigh, I’m set. Pictured below is the Maker 125 grain BLK high velocity fracturing and 200 grain sub-sonic expanding. These will be used in both a shorty bolt action and AR 10.5” pistol. I’m considering deer hunting with the Maker subs this season.

Edited to add: I’ve had best accuracy with 125 TNT’s using 18 grains of H110 and 296, but haven’t shot the 125 Makers yet. Used 6.0 - 6.5 grains of Titegroup for the 200 grainer out of the bolt action for Hollywood quite. I’ve got CFE BLK to try with the pistol when it gets completed. With the LAW folding stock adapter and TBAC U7 it should make a handy little side kick.
Click to expand...
I’ve killed a pile of animals with 200gr subsonic makers. Including deer, big hogs, and a cow I processed. Anyone that says subsonic ammo is not ethical has clearly never shot makers. Paul (the owner) is a great guy to deal with as well.
 
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Savage 16" .300wh
160gr cast/HTC
4-4.5gr TrailBoss
very quiet and accurate
Except for the light fp strike problem,a great setup
 
Markhammett said:
I’ve killed a pile of animals with 200gr subsonic makers. Including deer, big hogs, and a cow I processed. Anyone that says subsonic ammo is not ethical has clearly never shot makers. Paul (the owner) is a great guy to deal with as well.
Click to expand...
Agreed. I got a nice doe this past fall with the Maker 200 gr sub. It ran into a fence about 25 yards away and piled up. Another younger doe was standing beside her and she never moved after the shot broke.
 
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Guns&WhiteWater said:
Agreed. I got a nice doe this past fall with the Maker 200 gr sub. It ran into a fence about 25 yards away and piled up. Another younger doe was standing beside her and she never moved after the shot broke.
Click to expand...
I'm with you guys all the way on the Makers. I'm pushing the 220 rex at 1000 fps and getting 2" at 100yds. I have only taken three deer with them. Two crumbled up on the spot and the third jumped, stood for 5 seconds, took about 3 steps and laid down. Question: how many times did you do the water jug test? I've got 6 perfectly peeled 220 grainers sitting on my shelf LOL. Looking to try the Lehigh Defense 176 gr. controlled fracturing as well. They look nasty but we'll see.
 
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What is your load with the 220 Makers?
I'm running 12.1 cfeblk over 220 rnfb hornady interlocks.

Accuracy is great but no expansion. Great for cns shots 50 - 100 yds on stationary targets with patience but nothing else.
 
I'm shooting these from my 16" Ruger 300 Blackout Bolt gun with 11.5 grains of CFE-BLK, CCI-400 primer and Hornady brass. They are loaded to the crimp groove with a light crimp. I've tested this bullet on water jugs at 25 yards and 75 yards and can't tell the difference between the bullets. They all look like the examples on Maker's website. Hope this helps.

I should add that this rifle has a 7 twist. The Maker 220 Rex is LONG bullet so try it without the can first.
 
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