Subsonics - All Calibers

I keep forgetting about those.
My son sold his.

I have my 9mm 147g toned down some from max.

But if they sell you a 1050 fps pistol round it would pop in a 16 inch I'll bet.

My 950fps never popped and could probably get away with 1000fps rated loads?

Never ran any defense loads through his due to expense of bullets.
 
Last edited:
New video is up with the H&K MP5 shooting some steel gongs @ 200 yards with Federal HST 147gr. subs, my Rugged Obsidian 45, and the new Holosun SCRS-MRS on top (100 yard zero).

The camera didn't pickup the impacts very good this time, so you really gotta listen for them after the shots.

 
  • Like
Reactions: kindabitey
New video of the brand new TBAC Magnus-S HUB can on a 16" .308 Win with my subsonic handloads.

Be sure to go give it a like and share it on your socials, with YouTube harassing 2A content, every little bit of help is greatly appreciated.

 
Hello everyone.
RARR .300 BLK
Indian Creek Design chassis
Hornady 225 ELDM
BTO 1.490 " .100" jamp because of AR style mag.
10.9gn CFE BLK
AV 337 ms 13 °C
100м.
Screenshot_2024-10-26-17-06-08-104_com.reloaderscloud.rangebuddy.jpg

This is one of the best group
The average of this particular charge is about 1 moa (100m)

300m. 3 °C
BTO 1.490"
10.8 gn
AV 314 ms
1731178372088 (1).jpg


Hornady 208 ELDM
BTO 1.587"
1719773986839.jpg


Looks like CFE BLK likes compressed load.
Tried some local custom bullets, didn't really like them. Not consistent, although they would be fine for hunting. But I don't hunt animals.
1722844536622.jpg
 
Last edited:
  • Like
Reactions: st1650
G40 10mm (Alphawolf threaded barrel)
SNS 220gr. HI-TEK coated bullet
1.260" COAL
Titegroup
4.3gr. -> 940fps.
4.5gr. -> 972fps.
4.7gr. -> 994fps.
Blazer SP cases
Fiocchi SP primer

Sound wise, it's much quieter than subsonic 10mm 220gr. loads that use typical 10mm powders (Longshot, etc...). 4.3 Titegroup is into 9mm territory with my Fly 45. Not Titegroup 9mm load quiet, but just above a 147gr. bullet with 4.0 Autocomp / 4.2 CFE Pistol load (in a G34 with an AAC TiRant)
 
Last edited:
My new Aero Solus 8.3" .300 BLK pistol arrived yesterday! Been waiting on this thing for almost 7 months. It's not completely in it's "final form", as I wasn't expecting it to ship so soon, so I'm still waiting on the grip and a few other odd-n-end things, but I did already have the MDT .223 mags on-hand from another build that wouldn't cycle with the mags, and this one cycles perfectly with them, so that works out. I had already ordered the JMac Customs AB-9R w/ 1913 folding mech, and the Gearhead Works brace. I pulled the PA SLx 1-10x28 34mm LPVO off my Ruger American Ranch .300 BLK, so I can get it ready to sell. I swapped in the new TriggerTech Special and pulled the screw out (puts it right at 1 lbs.). Greased the action with some Aeroshell 33/64, and got it running slick. Retorqued the action back into the chassis. And then checked alignment with both my Magnus-S (7" can), and Magnus (9" can) just to make sure it's 100%...And it is. So, here's some sneak-peak looks... Haven't shot it yet, but will on Thursday when the range opens back up.

TBAC Magnus-S (7" can)

IMG_6283.jpeg


TBAC Magnus (9" can)

IMG_6299.jpeg


Magnus (9") barrel thread alignment with the can... Near as perfect as possible....My phone was just slightly off-center.

IMG_6296.jpeg
 
I've never deer hunted with a .300 BLK, but want to with this little Solus pistol. It has a 8.3" 7-twist barrel. I have Hornady 190 Sub-X bullets on-hand, but I've been reading more about people preferring the Makers REX bullets for deer and hunting live game. Their 220's say 1:7 or faster, and the 200's say 1:8 or faster. They would both be pushed around the same velocity (1085 FPS MV) with load workup. Since they would be at the same velocity, would the 220's or 200's be better with the 8.3" barrel with a 1:7 twist for hunting whitetail and hogs? I'm sure the 220's would be fine, and the slightly added KE would be a plus, but wondering if anyone has a preference or tested both, and found one to be superior over the over in the shorter barrels?
 
Last edited:
I have shot the .308 220's out of my 7.62x39 with a 1-8 twist and had no stability issues., even at 200 yards and beyond. I think they were bullets from Everglades Ammo. Barrel length is 18" though.
 
  • Like
Reactions: FuhQ
Got her sighted-in, and did some groups with some slightly underpowered loads (about 993 FPS), and also with some factory Hornady Sub-X 190gr ammo (about 990 FPS).

I have some Hornady 190 Sub-X bullets that I will be loading up, and pushing closer to the 1075-1085 mark. But that will be down the road a little bit as I have 500 rounds of factory Sub-X to shoot.

Mind you, I have degrading eyesight in my right eye, and this was only a 10x LPVO, and the orange bull in first group is only 1”, and the orange bull in the 2nd group is about 1/2”… So, considering that, I think the groups turned out pretty decent given all the factors. And the fact it’s only a 8.3” barrel with a 7 twist, it’s pretty damn accurate. I’ll try to get some better groups tomorrow or next weekend with my precision subsonic handloads with Nosler 210 RDF’s being pushed closer to proper 1075-1085 FPS.

The groups are solid for subs, but I think I can get better out of it, as I had no problem running a quick dope chart and taking it straight to 300 yards. And 4/5 shots I’m hitting a full-size D28 at 300 yards, so it’s still pretty dangerous at distance. At 100-150 yards, if it was a deer, and I shot it in the vitals, it would be dead.

It shoots good, it runs smooth, no feeding hiccups with the MDT mags, and it’s ridiculously quiet with the full-size Magnus on there.

IMG_6442.jpeg
image_cropper_A8F5C275-5AFC-4E27-B4D8-401FAEE16BB3-8378-000006A8C4FA31F7.jpeg
image_cropper_57775BDF-E2AE-43DC-A64D-F5AD7D8387E9-8378-000006AA53FDF9FD.jpeg
 
  • Like
Reactions: smoooth1
Wow!! That’s crazy heavy for such a small rig!!

Love the look, bet it’s fun to shoot, too!

Would be nice and maneuverable in the deer stand.

Thanks for weighing it, much appreciated!!
 
  • Like
Reactions: FuhQ
Wow!! That’s crazy heavy for such a small rig!!

Love the look, bet it’s fun to shoot, too!

Would be nice and maneuverable in the deer stand.

Thanks for weighing it, much appreciated!!
It’s hefty, but it handles nicely (insert “that’s what she said” joke). 😂 The maneuverability will be nice. For short range (0-150 yards) treestand hunting it will be nice.

The barrel is also a pretty heavy profile, along with the heavy chassis, and the fairly hefty LPVO setup. But it is definitely fun to shoot. The compactness when folded up is nice, too. Toss a QD sling on it, and it would be nothing to pack into the woods.
 
  • Like
Reactions: smoooth1
Got her sighted-in, and did some groups with some slightly underpowered loads (about 993 FPS), and also with some factory Hornady Sub-X 190gr ammo (about 990 FPS).

I have some Hornady 190 Sub-X bullets that I will be loading up, and pushing closer to the 1075-1085 mark. But that will be down the road a little bit as I have 500 rounds of factory Sub-X to shoot.

Mind you, I have degrading eyesight in my right eye, and this was only a 10x LPVO, and the orange bull in first group is only 1”, and the orange bull in the 2nd group is about 1/2”… So, considering that, I think the groups turned out pretty decent given all the factors. And the fact it’s only a 8.3” barrel with a 7 twist, it’s pretty damn accurate. I’ll try to get some better groups tomorrow or next weekend with my precision subsonic handloads with Nosler 210 RDF’s being pushed closer to proper 1075-1085 FPS.

The groups are solid for subs, but I think I can get better out of it, as I had no problem running a quick dope chart and taking it straight to 300 yards. And 4/5 shots I’m hitting a full-size D28 at 300 yards, so it’s still pretty dangerous at distance. At 100-150 yards, if it was a deer, and I shot it in the vitals, it would be dead.

It shoots good, it runs smooth, no feeding hiccups with the MDT mags, and it’s ridiculously quiet with the full-size Magnus on there.

View attachment 8583742View attachment 8583743View attachment 8583744
I have 500 rounds of factory Sub-X to shoot.
Before I started reloading, I tried such cartridges.
They are probably one of the best factory subsonic cartridges.
Then I didn't think to measure СBTO.
Is it possible for you to measure it?
Because I plan to buy such bullets for reloading.
Saw them locally.

Of course, these are the best groups.
The average was from 1 to 1.5 MOA .
100м
Share Target Image (3).png
150м
Share Target Image (2).png
 
If the weather holds up tomorrow, I'll be testing out some new 190 Sub-X loads with 10.5gr of 300-MP, so hopefully these will be closer to 1050 FPS or so, and group a bit tighter, compared to the 10.0gr load that ended up around 1,000 FPS and were a bit on the loose side of groupings, IMO.

Also, my shipment of 220gr Maker REX bullets showed up, so I'll be working on that, once I nail-down a good hunting load with the 190 Sub-X's.
 
Went and did some load testing on my 8.3” .300 BLK Solus, with the Hornady 190 Sub-X bullets. I used 10.5gr of Alliant 300-MP powder, and it was just a tad too hot, and averaged just over 1100 FPS (about 1105). I'm going to go down about 0.2 grains to be sure it stays subsonic, but hopefully it still shoots this amazing! I’m thoroughly impressed with this little pistol.

IMG_6442.jpeg
IMG_6299.jpeg


Here’s a 9-shot group before I finalized the zero. It was 10 shots, but I made an adjustment after the first shot, so I blacked it out, since it wasn’t part of the same POA group.

image_cropper_6D2381C3-EAAB-4821-A0F7-AB7FF2401C4B-6540-0000030751D48427.jpeg


Here’s a sub-MOA 5-shot group a little while later after getting it completely zeroed. This thing is ready to smoke some whitetails inside of 150 yards.

image_cropper_F6E4FD43-3E7F-4A41-A902-8DCB69DA3B71-6540-000003090088288D.jpeg
 
Last edited:
I guess not a lot of folks shooting (or experimenting) with subs these days...

I got my Maker REX 220gr bullets in last week, so will probably start load development testing this weekend. I'm thinking 10.5gr might get me close to 1050, since it was just at 1100 with the 190's.
 
I've started playing with coated lead 220gr. subs in my 8" Seekins 300 Blk. Brings round cost down to pistol level.

In 10mm, I just discovered Barry's is making a thick plated 220gr. I'm going to give it a try with my Titegroup load. Just got 500 of them.
 
Today was very windy 15-16mph and cold 29.3F.
But there was no snow, so I tried again at 100m -300м 225 ELDM.
Unfortunately, COL 2,270 at 10.9 CFE BLK(no drop tube) is the maximum AR mag allows.
This circumstance, as well as the fact that jump is already around ,100" doesn't allow me to play with seating depth unlike the 208 ELDM.
1739041809227.jpg
This is the best group, the others were 1.5-2.0 MOA.


1739039227909.jpg

In general, it is noticeable that thanks to the possibility of fine-tuning the sitting depth It is much easier to achieve acceptable accuracy with the 208 ELDM.I already posted above.

I also shot a 12x17 inch gong at 300m, but I didn't like the result, although almost all the shots hit it.
There was nothing like a group.

In contrast to shooting in more favorable conditions when there was summer weather.
Then the 300m gong looked like this
300 m
without wind
208 ELDM
AV 335 m/s
1739041741330.jpg1739041741324.jpg1739042310484.jpg
 
Last edited:
I guess not a lot of folks shooting (or experimenting) with subs these days...
Mostly people are satisfied with the first acceptable result and leave expensive experiments to those who hunt for paper targets.
Once I posted this picture on my local forum, then everyone began to wonder why I was wasting my time on this, since I am not a hunter.
Hornady 208 ELDM seating depth test
1723402071204.jpg