which H buffer for mid length?

[coltn46920]

Which heavy buffer should I use for my mid length AR?

[CHS]

What leads you to believe you need one at all?

What kind of functional problems are you having that you think an H buffer will fix?

[aplinker]

Contrary to what's on the intardwebz, there's no secret formula for determining what buffer to use.

The best thing to do is to have them all and figure out which works with your preferred loading.

Good mid-lengths should be perfect with a standard carbine buffer.

[missiontrails]

Won't a H buffer "smooth" things out a little bit in a mid-length? I put an H in my new mid-length build, not for feeding reliability.

[Ishoot]

Should just be the standard buffer..unless you are having issues with FTE. Try it out first before moving up to the "H" weight class.

[sreiter]

Contrary to what's on the intardwebz, there's no secret formula for determining what buffer to use.

The best thing to do is to have them all and figure out which works with your preferred loading.

Good mid-lengths should be perfect with a standard carbine buffer.

I bought a BCM mid length (16") I asked BCM which buffer - they said regular or H buff

[sreiter]

Should just be the standard buffer..unless you are having issues with FTE. Try it out first before moving up to the "H" weight class.

interesting, I would have thought the opposit

the H is heavier, so it will slow down the carrier when moving back/make the rear stroke shorter....

i would intuitively guess the longer the stroke, the better for extraction. short stroking would play havoc on extraction

just like using heavy springs with wad cutter load in a 1911 - the slide isnt traveling back far enough for extraction

[aplinker]

It's more complicated than that...

The biggest threat of FTE is trying to extract when pressure is still high in the brass, i.e., before it's had time to contract. Adding mass increases lock time before the carrier starts to move.

It's all a little fuzzy.

BCM should be drilled for a standard buffer - they're pretty smart cookies. An H-buffer would be a good choice if you're planning to run, say, Mk262.

interesting, I would have thought the opposit

the H is heavier, so it will slow down the carrier when moving back/make the rear stroke shorter....

i would intuitively guess the longer the stroke, the better for extraction. short stroking would play havoc on extraction

just like using heavy springs with wad cutter load in a 1911 - the slide isnt traveling back far enough for extraction

[missiontrails]

Don't complete factory Noveske mid-length rifles come with H?

[sreiter]

It's more complicated than that...

The biggest threat of FTE is trying to extract when pressure is still high in the brass, i.e., before it's had time to contract. Adding mass increases lock time before the carrier starts to move.

It's all a little fuzzy.

BCM should be drilled for a standard buffer - they're pretty smart cookies. An H-buffer would be a good choice if you're planning to run, say, Mk262.

interesting...again...pure intuitive logic tells me that the heavier buff isnt going to move back into extension as far, therefore "time until extract" is going to be short, therefore the brass wont have as much time to contract

i'm not arguing or even saying i'm right, i'm just sound boarding what my intuition is telling me.

[cmace22]

It's more complicated than that...

The biggest threat of FTE is trying to extract when pressure is still high in the brass, i.e., before it's had time to contract. Adding mass increases lock time before the carrier starts to move.

Is this what you mean?

More weight = more psi to move it = longer lock time.

Or does it help bleed off gas/psi before trying to unlock.

interesting...again...pure intuitive logic tells me that the heavier buff isnt going to move back into extension as far, therefore "time until extract" is going to be short, therefore the brass wont have as much time to contract

I think your right if you are running a really heavy buffer. If the BCG doesnt move far enough back into the buffer tube, then you could run into many malfunctions including FTE's and FTF's. This is what you tend to see in a wrong gas/buffer combo.

[aplinker]

interesting...again...pure intuitive logic tells me that the heavier buff isnt going to move back into extension as far, therefore "time until extract" is going to be short, therefore the brass wont have as much time to contract

i'm not arguing or even saying i'm right, i'm just sound boarding what my intuition is telling me.

If the rifle is cycling properly, the buffer bottoms out. That's what it's there for.

You're missing the point that time to extract is a delay between when the primer is ignited and when the casing is pulled, not the time it takes to be extracted.

[Desert_AIP]

I run an H buffer in my midlengths and an H2 in my carbine gas weapons.

[CHS]

I run an H buffer in my midlengths and an H2 in my carbine gas weapons.

Specifically, what operating problems did that fix?

[gemini1]

I'm using an MOE stock with regular buffer/spring on my 16" BCM. 200 rnds of wolf ammo so far, and no problem. Recoil is also bearable, especially for a small shooter like me.