Short Stroking a regular JP 9mm SCS?

[egd5]

Thanks for the diagrams. I ordered scs2-9ss-5 according to the order form. 5 steel. I assume that's the bottom one in the diagram. I don't know what the different end pieces do though.

[Darqusoull13]

1 hour ago, egd5 said:

Thanks for the diagrams. I ordered scs2-9ss-5 according to the order form. 5 steel. I assume that's the bottom one in the diagram. I don't know what the different end pieces do though.

Yep, that will be the Short Stroke with 5 steel weights. It's a solid choice for a very fast, soft cycle. 

[Karre]

So this is the redneck version of a 14mm shorter stroke. I guess the washers could brake but I will try it. Or I ad some rubber between the washers first.

[DPA]

On 5/20/2019 at 8:53 PM, Darqusoull13 said:

Yep, that will be the Short Stroke with 5 steel weights. It's a solid choice for a very fast, soft cycle. 

Why did you choose the 5 steel weights over 5 tungsten or a combo of tungsten and steel? I am trying to tune a JP GMR-15 with a short stroke system. I have 5 tungsten and the uncolored spring installed now. I have tried numerous combos of springs and weights but I do not have an all steel option ( and now I’m wondering if I need to buy 3 more steel]. As it stands now the gun shoots flat enough and the recoil is light enough with my homegrown, but... like everyone else I’m always looking for just a little bit flatter and a little softer recoil. I have a factory stock leadstar pcc which came with a blitzkrieg kynshot buffer and an AR 10 spring. It is a soft shooter and has served me well in steel challenge matches. But the JP “fits” me better so I’m giving it a try. Thanks

[egd5]

The tuning process with weights need to take into account the PF of the load you're shooting also. There has to be a balance there and that is the tricky part. The way I understand it is the lighter the load -the lighter the buffer weight should be, generally speaking.

My load was/is about 133PF, that's why I went with 5 steel. It has worked pretty good I think. HOWEVER, a few weeks ago a friend tried 4 steel and 1 tungston and said it made a difference. We're about the same PF. I tried it and it really has made a difference in mine too. The dot barely moves when I do my part and keep it against my shoulder.

It's all about balancing your buffer with the load you're shooting.

[Darqusoull13]

4 hours ago, DPA said:

Why did you choose the 5 steel weights over 5 tungsten or a combo of tungsten and steel? I am trying to tune a JP GMR-15 with a short stroke system. I have 5 tungsten and the uncolored spring installed now. I have tried numerous combos of springs and weights but I do not have an all steel option ( and now I’m wondering if I need to buy 3 more steel]. As it stands now the gun shoots flat enough and the recoil is light enough with my homegrown, but... like everyone else I’m always looking for just a little bit flatter and a little softer recoil. I have a factory stock leadstar pcc which came with a blitzkrieg kynshot buffer and an AR 10 spring. It is a soft shooter and has served me well in steel challenge matches. But the JP “fits” me better so I’m giving it a try. Thanks

5 Steel Weights gave me the least dot movement with the fastest cycle. 

[DPA]

18 hours ago, egd5 said:

The tuning process with weights need to take into account the PF of the load you're shooting also. There has to be a balance there and that is the tricky part. The way I understand it is the lighter the load -the lighter the buffer weight should be, generally speaking.

My load was/is about 133PF, that's why I went with 5 steel. It has worked pretty good I think. HOWEVER, a few weeks ago a friend tried 4 steel and 1 tungston and said it made a difference. We're about the same PF. I tried it and it really has made a difference in mine too. The dot barely moves when I do my part and keep it against my shoulder.

It's all about balancing your buffer with the load you're shooting.

Do you recall which spring you are using?

Edited March 31, 2021 by DPA

[egd5]

Whatever spring came with the original 5 steel set-up. I don't have any others.