Suppressors 9mm Subs

[blksno]

I was going to put this in the hand gun section, but since I'm ONLY referring to 9mm 147gr Subsonic hand loads WITH A SUPPRESSOR, I figured it would be better here.

<span style="font-weight: bold">For the guys running a can on their 9mm, and hand loading their own 147gr ammo.</span>

I'm running a Glock 34 and Octane-9

I've had no issues with any of the factory subs that I've tried except for some flat nose that tend to not feed perfect.
The loads I've used are not cycling correctly. I got the load from a buddy that was using it with his USP and Tundra, but it's just not reliable enough with my host/can set up.

Right now I'm running 3.3gr of Titegroup and 147gr HP pills but I only get about 1 out of 5 to eject completely. The cycle fine without the can on.
I've gone up as high as 3.5gr and have better results, still subsonic, but still only ejecting 3-4 out of 5.

How hot have you guys using Titegroup gone with 147gr ammo? Would I expect diminished return from 3.6 or 3.7 or should I just seat a couple thousandths deeper with the load I've got?
I didn't see any crazy pressure other than increased gas blow back, but it's still not quite enough to eject 100% of the spent cases.


Thoughts?

 

[Stalking_Rhino]

Re: 9mm Subs

DO NOT increase the depth of the seating, that can lead to higher pressures not more recoil or blowback.

Only seat to recommended depths.

I use 3.4 of Titegroup on all my 147gr FMJ's and have zero issues with cycling on my Trident.

 

[blksno]

Re: 9mm Subs

I meant to say Octane-9...I'll update it.
Regardless, it's just not quite working in conjunction with my host/suppressor combo.

 

[Stalking_Rhino]

Re: 9mm Subs

Load works well with the Octane as well.

 

[HonkeyMcGee88]

Re: 9mm Subs

Have you try a lighter spring?

 

[blksno]

Re: 9mm Subs

Yep, I actually got 15, 13 and 11 lb springs, stainless guide rod and even with 11 lb springs, it made no difference.

 

[HonkeyMcGee88]

Re: 9mm Subs

 

[Stalking_Rhino]

Re: 9mm Subs

highest I took it was 3.6grains of Titegroup. Try upping the load, mine cycles with a 15lb recoil spring and my titanium guide rod.

 

[bricktop]

Re: 9mm Subs

I'm assuming this is an aftermarket barrel?

Maybe the mass of the suppressor is putting too much upward pressure on the barrel/slide locking interface? The ridge just in front of the chamber on top of the barrel may need to be ground with slight chamfer (like the factory barrels) or polished. Maybe just make sure it is well oiled to start with?

 

[RollingThunder51]

Re: 9mm Subs

For God's sake leave everythig having to do with your Glock slide/barrel unaltered.

Who's barrel?

 

[Stalking_Rhino]

Re: 9mm Subs

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RollingThunder51</div><div class="ubbcode-body">

For God's sake leave everythig having to do with your Glock slide/barrel unaltered.

Who's barrel? </div></div>

ATF considers the spring in an Octane a silencer part, you can't have another one to be swapping out only a manufacturer can change that spring. It is internal to the can and is not dual purposed=silencer part.

Didn't you ever notice that no manufacturer sells replacement piston springs? Its not that they don't wear out it's that they can not sell the springs.

I am surprised you gave that advice.

 

[bricktop]

Re: 9mm Subs

All I'm saying that there might be some rough machining here. Would not hurt to check it out, make sure it is well-oiled If oil fixes it, then the problem might be found. It <span style="font-style: italic">does</span> work without the suppressor after all, so something must be causing it. I'm just thinking the extra mass is making it difficult for the slide to unlock from the barrel, and that would be one point that could cause it.

 

[skinney_7]

Re: 9mm Subs

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: StalkingRhino</div><div class="ubbcode-body">
ATF considers the spring in an Octane a silencer part, you can't have another one to be swapping out only a manufacturer can change that spring. It is internal to the can and is not dual purposed=silencer part.
</div></div>
fing joke.

 

[RollingThunder51]

Re: 9mm Subs

That spring, part of the Neilson, has to be tuned to work properly. It, and it alone, will properly cycle this action with that round.

Contact the maker and ask what weight they originally supply and what weight they recommend for your round.

Again, please, what make of barrel?

 

[Stalking_Rhino]

Re: 9mm Subs

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RollingThunder51</div><div class="ubbcode-body">That spring, part of the Neilson, has to be tuned to work properly. It, and it alone, will properly cycle this action with that round.

Contact the maker and ask what weight they originally supply and what weight they recommend for your round.

Again, please, what make of barrel? </div></div>

So you are advocating for a non manufacturer to buy what the ATF considers silencer parts?

The spring DOESN'T have to be tuned beyond how the factory delivers it, thats why pistons like on the Evo9, Trident, Octane, TiRant, Multimount, Tundra, Cobra all work no issues, and there is no different spring weights available from the manufacturer.

The problem is the ammo is too weak to cycle the LCD.

 

[blksno]

Re: 9mm Subs

The barrel is a Lone Wolf barrel BUT as I said in the previous post. EVERYTHING FUNCTIONS FINE with 147gr factory ammo and it functions fine with 115gr supersonic loads, both factory and hand loaded.

The only time I get issues is with hand loaded 147gr subs which is why I asked for info regarding charge weight with Titegroup.

 

[RollingThunder51]

Re: 9mm Subs

I am advocating he contact the maker and ask what weight the spring is and what weight they recommend for his ss round.

When a pistol cycles without the can on....again, when a pistol cycles without the can the power of the round is not the issue. A properly set up and tuned Neilson creates a weightless can for the instant of discharge. His Neilson spring is too heavy and his can will not float. His end result is the same as standing his Neilson on its ears or swapping to a static coupler. Want to fix this? Get the right spring.Now some cans are so poorly speced that their weight alone requires ss rounds, that is what modern booster design is all about.

Two things...

1. Most can makers provide Neilsons that function with a wide variety of supersonic rounds. This ususlly translates to pounding the frame with the hot rounds folks shoot. His issue is the exact opposite. Good makers have a range of springs and all abide by the law.

2. Few will like this one. Imo Lone Wolf makes a garbage barrel. Most of the shops I know wont set up cans with that barrel and when they come in the door as not running well....that barrel gets chucked out. Now for all of you shooting this very same round and can, what barrel do you have? I shoot this round both store bought and reloaded though not through this can.

Best

 

[agbm]

Re: 9mm Subs

Look at the after market barrel, it may need some fitting to the slide to function.

 

[21Bravo]

Re: 9mm Subs

I can only offer what I've used over the past 4 years (As long as we Missourians could have suppressors). 3.7 grains Vihtavuori N320 under a Precision Delta 147 FMJ at 1.500 or so. I have ran 15000 rounds of this through an M16/9mm registered receiver full auto with a 5" TROS 3 lug barrel with SWR Trident9, two different Glock 17s factory springs with Lone Wolf aftermarket barrel, and a Glock 34 with Lone Wolf barrel. I've never had any issues with cycling unless my LCD on my Trident was incredibly filthy and I can't recall that being more then a quick spray it out with some lube and screw if back on event.

N320 is a little pricey but given you can load nearly 2000 rounds per pound it isn't that significant in the grand scheme. Word on the street is this pretty much duplicates Alabama Ammo's "Special K" subsonic load.

HTH

 

[Stalking_Rhino]

Re: 9mm Subs

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RollingThunder51</div><div class="ubbcode-body">I am advocating he contact the maker and ask what weight the spring is and what weight they recommend for his ss round.

When a pistol cycles without the can on....again, when a pistol cycles without the can the power of the round is not the issue. A properly set up and tuned Neilson creates a weightless can for the instant of discharge. His Neilson spring is too heavy and his can will not float. His end result is the same as standing his Neilson on its ears or swapping to a static coupler. Want to fix this? Get the right spring.Now some cans are so poorly speced that their weight alone requires ss rounds, that is what modern booster design is all about.

Two things...

1. Most can makers provide Neilsons that function with a wide variety of supersonic rounds. This ususlly translates to pounding the frame with the hot rounds folks shoot. His issue is the exact opposite. Good makers have a range of springs and all abide by the law.

2. Few will like this one. Imo Lone Wolf makes a garbage barrel. Most of the shops I know wont set up cans with that barrel and when they come in the door as not running well....that barrel gets chucked out. Now for all of you shooting this very same round and can, what barrel do you have? I shoot this round both store bought and reloaded though not through this can.

Best </div></div>

Apparently by your definition AAC, GemTech, SWR, Silencerco, and YHM are not good manufacturers, since with my experience only a few will tell you the specs, noone has different springs strengths available, and all recommend tuning the ammo if you are having issues with cycling.

Its alot easier/cheaper to add .2 grains of powder than to ship a silencer back to the manufacturer, swap out a spring and ship back just to not have it work any better because the ammo is still too weak.

I run either factory Glock barrels or Storm Lake barrels, LW is nice for the price but takes too long to break in for proper function IMHO. When I had my handloads with less powder(like the OP is dealing with) it didn't cycle 100%, though it was more reliable than his combo. Up the powder charge and this OP's issue will be a thing of the past.

 

[RollingThunder51]

Re: 9mm Subs

Fine, the problem is the charge, perfect solution. Your done.