My query is inspired by the use of a silencer, but I want to post in the general rifle forum, as I feel there are knowledgeable members who don't check the suppressed forum regularly. As the question has implications outside the realm of suppressors, I feel it's appropriate.

I have heard alternative action springs referred to as "snake oil". However, the Tubb springs, A5 assemblies, and varying Sprinco springs all seem pretty prolific. I have been using a Sprinco Red spring for a while now and, as best I can tell, LMT uses a similar spring weight in their factory lowers.

Where buffers are concerned, they are very often referenced as a good way to fine-tune one's rifle. They can be used to take the edge off a gun that's a bit over-gassed, to enhance reliability, alter dwell time, or tweak recoil impulse.

My question is about compensating for an over-gassed condition, tweaking dwell time, and enhancing reliability. I don't much care about "shootability" and recoil impulse.

A setup of mine is over-gassed. It lacks an adjustable block, and spits brass at 1 o'clock. It has the snappy recoil to go with it, which raises parts wear concerns. This setup is suppressed, and had a Sprinco Red spring and H3 buffer. I say had because, after I recognized the undesirable performance, I swapped for a Gemtech vented carrier. The ejection was then a bit weaker than I think is ideal, so I swapped in a H buffer. It got a bit better, but still seems a bit weak.

I may next swap the H3 back in, and use a lesser-weight spring. My use of the heavier spring is motivated by the desire to counter-act the effects of silencers, and to enhance feeding reliability. People often use buffers alone, to compensate for silencer effects, but I like the idea of more spring on the feeding cycle too. A heavy buffer helps somewhat here too, but that spring is what gets everything moving so, in my mind, it's nice to have a stouter one.

In my current debacle though, with reliability being the priority, is less buffer or less spring more advisable, now that the vented carrier is in play?

I am sure I forgot some important aspect of the discussion. I'll wait for one of y'all to remind me. Thanks in advance, for the help.

In other words, if someone is combatting an over-gassed condition, is more spring or more buffer preferred, and why?

I'd just get a BRT gas drive and be done.
Use the drop downs and select what you have or are going to use.
100% suppressed or 50/50 and type of action.
They'll send one out sized for what you select.

The question isn't being asked just so I can solve a specific issue with a specific gun. Well, it is and it isn't. I posed the question in a general sense. That being said, I'd still like to hear any thoughts on the topic.

I got the gun in question figured out. I tried a different silencer, in hopes that it'd have a bit more back pressure and give me more confidence in the cycling force. It had less pressure. So, I threw the original action bits back in (regular FA carrier, Sprinco Red, and H3 buffer), and it ejects at 3 o'clock. A bit stouter than many consider ideal, but it gives me some leeway in filth accumulation and/or lack of lube.

I have employed a BRT tube in the past. I'd mess with them more, if they didn't cost as much. I don't think they're overpriced; I just can't afford to throw $80 at every issue similar to this one, when I likely have a combination of parts in inventory already that'll work.