heavy buffer

[Wyldman]

Let them float with the buffer, you just don't want them turning sideways in the tube during a bolt cycle.

[ssracer]

Use caution in making the buffer longer. If you remove the ability of the BCG to cycle all the way back you can induce feeding and failure to lock open issues.

[ssracer]

In short, if you want a heavy buffer, buy an H1 or H2. I use a PSA H2 in my 16" carbine and it functions fine. My eotech never gets blurry....lol

[RecoilSensitive]

Eo and glass are different haha.


I will get on PSA and try to pick up an h2

[Frailer]

I don't think adding mass will solve the problem. I'm betting it would make it worse.

The Plum Crazy lower had a standard carbine buffer and *very* snug upper/lower fit. What (other than mil spec vs commercial tube, which is irrelevant) is different with your current setup?

The first thing I'd try would be an accuwedge, even though I hate the stupid things.

[ssracer]

Try lookin though the scope and bumping the rifle. see if it does it without shooting

[guncrank1]

Yes the scope could be messed up somwwhat

[Wyldman]

The quarter trick was suggested just to see if added mass would be of benefit before spending money and commiting to parts that may or may not help, not as a permanant solution.

[RecoilSensitive]

I Looked through and had buddy hit scope and it didn't move. Still clear. H2buffers are out of stock


Basically the whole lower is changed upper stayed the same

Went from basic plum crazy with a butpad to
Stripped stag lower
PSA moe lower parts kit in mil spec. Upper to lower fit is actually pretty snug

[ssracer]

I don't see how that would have affected the scope...odd

[RecoilSensitive]

Well there is more felt recoil and more of a jarring with each shot instead of the smooth stroke it used to be. Idk if buffer needs to be heavy or the tube needs to be smoothed or what it is just not a smooth action anymore

[guncrank1]

Ok , I am not a TV gunsmith so from what I can deduce from all current info is that the Plum Crazy lower had a tighter fitting tube/ buffer than the mil spec replacement.
Plus the fact that in firing the polymer would flex and absorb some some of the recoil impluse.
Just my SWAG

[RecoilSensitive]

Ok I am going to play with the buffer and spring and see what I can do but idk I don't like it.

[Mudcat]

My diagnosis (guess) is that the buffer is smacking the rear of the tube harder. This rather than the spring absorbing the shock of the buffer and stopping or greatly slowing it down before it reaches the end of the tube.
A heavier buffer should slow it down enough. What gas system does the rifle have carbine, mid length or rifle length. What is the ejection pattern of the brass 12:00-6:00? Does the brass have a dent in the side of the case?

One other thing is reduce the scope power to the lowest setting. This will show the least amount of movement. I always keep my scopes on the lowest setting for the quick shot. If a target is farther out to need a higher power, I have plenty of time to adjust the power up.


Sent from my evil black iPhone using Tapatalk

[RecoilSensitive]

Brass ejects fairly straight against deflector at the edje of the deflector

It is a carbine length system. Stock from delton. I am shooting Sami loads so I know it is not too hot it is just weird. I need to find a h2 buffer because PSA is out.

So if anyone has one let me know I will be posting a wtb. We will see if that helps if not I will may try to find a stiffer spring

[Mudcat]

Where is the brass landing in relation to your shooting position. With your target being 12:00.
Bravo Company has them in stock.

[RecoilSensitive]

Prolly 4-5 o clock pretty far away like 7 feet.

Ya I say that I may call PSA cause I have all their parts on my lower and I kind of want to stay the same.