LaRue LT-10 6.5 Creedmoor cycling issues

[david walter]

I have a LaRue LT-10 in 6.5 Creedmoor.

Cycles great with a brake (Silencerco ASR), but when I add the silencer (Silencerco 36M), it doesn’t eject brass. Instead the brass jams and is destroyed by impact with the bolt. As in it gets turned around and the bolt destroys the neck.

Any thoughts on how to remedy this?

 

[TonyTheTiger]

Sounds like it's wildly overgassed with the can. You can try to bandaid it with heavy components like springs and buffers or you can pick your poison of means to adjust gas.

 

[david walter]

Thanks

 

[david walter]

It has a H2 in it with this red tipped spring

I can drop in the H3 and try that, or do you recommend I spend the $$ on the JP?

I’m only going to shoot this one load in that rifle (Hornady 140 BTHP) until I run out, and I have 300+

 

[TonyTheTiger]

It has a H2 in it with this red tipped spring

I can drop in the H3 and try that, or do you recommend I spend the $$ on the JP?

Personally I don't adjust the rest of the gun to match the gas volume, and it may work, but I don't really recommend it. It's a round about way of fixing it.

Think of it like your car. It gets 30 mpg. You have a 10 gallon tank. You want 400 miles of range. You are able to optimize the engine to achieve 40mpg, or, for slightly less effort and expense you can fit a 13.3 gallon gas tank.
I think we would all rather optimize the efficiency of the system than throw tank volume (in this case reciprocating mass) at the system.

These days we have adjustable gas blocks, adjustable bolt carriers, adjustable gas keys, gas tubes with specific inner diameters, I think YHM(?) makes a gas block with an undersized port that can be drilled out. I'm probably forgetting some gas metering solutions, and they all have their pros and cons, but regardless, I'd adjust gas before adding weight if possible.

 

[david walter]

Understood

 

[bfoosh006]

I would at least try the 5.4oz buffer, but as TonytheTiger said, ultimately gas flow reduction will probably be more productive.

FWIW, I run SLR Adj. GB's on all my LFAR's. 308 and 6.5CM , I prefer to limit the gas at the port, keeping any excess gas out of the upper.

 

[david walter]

JP, Seekins, or SLR - Labor day sales and all that.

 

[david walter]

Any of you running this system?

Welcome to RIFLESPEED.COM

Choosing the correct Gas Control™ model for your carbine

 

[Delta Echo]

I would never suppress an AR without an adjustable gas block, but that's just me. Even if it runs, you will get more gas in your face, more crap in the receiver, and more wear and tear on components.

 

[Cascade Hemi]

Any of you running this system?

Welcome to RIFLESPEED.COM

Choosing the correct Gas Control™ model for your carbine

They work the same as an SLR AGB. If the manual adjustment is something you need then it may be the solution for you.