RAW Rapid RAW HM1000 X Questions.

Hi Guys,

I am in need of some help from the RAW Gurus.

Since I bought my RAW it has been nothing but amazing, won many competitions or placed in the top 5 with it consistently.
She came from the box shooting .22 JSB Redesigns at around 925ish. At a stage the hammer was removed to check for dirt (there was none), this is when my issues started.

Set the speed over a chrony to 928. But I never got the same results with it after that.

I also found that my 2 preferred batches, the one shoots around 15-20fps faster.
And off course the different readings I get from different chrony"s.

My question is this. How sensitive is the RAW to hammer spring adjustments?
Any insights would be appreciated.
 
It really depends on what spring you are using. If you are using a short, stiff spring, HS adjustment will be more sensitive. If you are using a longer, thin-wired spring, HS adjustment will be more forgiving - meaning it may take more of a turn/turns to see the effect.

My guess is that your inconsistency is due to the JSB MRD's. These have been really inconsistent the past couple years. I have found the shallows to have the same poor quality. The deeps were fairly good since they came from new dies. The Lights I have found to be EXCEPTIONAL!

You may also want to try the JTS/AEA pellets around the same weight. They seem to be really well liked and of excellent quality. I don't use them because they have all fit too tight in my barrel.
 
The JSB batches I have is both excellent.
Plenty of guys shooting them with excellent results, very confident it is not the pellets.
The rifle has shot a 229 at 100m with them.

I have found I can adjust from about 910 to 960 on the hammer spring, a little less when my trigger is set very light.
So somewhere in that, call it 50fps is the sweet spot. I am just struggling to find it again.

I took the rifle to the range today and started shooting groups at 25m. Left the chrony at home.
Where it was adjusted to over the chrony, the groups were bad. Started going up by about a quarter turn at a time and the groups started getting smaller.
I got it to where I am happy with the grouping for now. Will have to take it indoors to fine tune.

So it seems my rifle is VERY sensitive to hammer adjustments, even when you can only adjust within a 50fps window.
Any other RAW owners found the same with their rifles?

One thing I have learned is chrony numbers mean nothing, where I had the speed set to 928fps with a spread of 7fps and SD of 1.8fps, the results on paper was bad. No idea what speed the rifle is shooting at now, will put it over a chrony when I have fine tuned it indoors, just so I have a reference when changing batches.
 
It is IMO .. pretty safe to say that when nearly ANY PCP platform that has a smallish size plenum for the power a tune is trying to extract, that it will be very touchy in pressure & hammer strike finding where the peak output will be found.
While also making note on 1000X rifles also having two different plenum sizes ( Older X's are smaller & Newer X's being slightly larger )

It is JMO that RAW rifles commonly get purchased & tuning on them pushed to the limits of the platforms capability and is sadly many times outside what would be a much easier & sustainable state of tune if lowered a bit.
 
To answer your question, I found that the Hammer spring adjuster does very little in the way of increasing velocity. I was able to reduce velocity, but at the cost of a much higher, extreme spread.

RAW sends their guns out pretty much at peak performance. In your case, it sounds like you’re not trying to improve performance but simply get it back. Before adjusting anything I would remove the hammer spring and anything else associated with it. Then give it a good cleaning and a very light lubing. Perhaps something didn’t get put back together properly, or some material is restricting the original functionality.

Let us know hit it goes!
 
Hi Guys,

I am in need of some help from the RAW Gurus.

Since I bought my RAW it has been nothing but amazing, won many competitions or placed in the top 5 with it consistently.
She came from the box shooting .22 JSB Redesigns at around 925ish. At a stage the hammer was removed to check for dirt (there was none), this is when my issues started.

Set the speed over a chrony to 928. But I never got the same results with it after that.

I also found that my 2 preferred batches, the one shoots around 15-20fps faster.
And off course the different readings I get from different chrony"s.

My question is this. How sensitive is the RAW to hammer spring adjustments?
Any insights would be appreciated.
Having two different muzzle velocities from different tins of pellets is directly related to the fit of the pellet in the barrel, not anything with the rifle.

If your problems started after taking it apart and reassembling it, what could have changed? Did you reassemble the inertia weight and spring and washer inside the hammer incorrectly? Did you lube the hammer with grease that slows it down and makes it inconsistent? Did you just get the hammer spring adjustment off?

As others have stated, the JSB Redesigns have seemed more inconsistent the last 3 years or so. My rifles don’t shoot the current batches as well as they shot the batches from 5 years ago. That is all about pellets. When you change pellet brands or batches, don’t expect that the same velocity will work for all even if they are the same weight. You need to find the best velocity that gives the best groups with the pellets you’re shooting right now, which you described doing at the range. Keep doing that. Group size and accuracy tell you all you need to know. You don’t need to hit an exact velocity over a chronograph; that is only to get you in the ballpark.
 
It is IMO .. pretty safe to say that when nearly ANY PCP platform that has a smallish size plenum for the power a tune is trying to extract, that it will be very touchy in pressure & hammer strike finding where the peak output will be found.
While also making note on 1000X rifles also having two different plenum sizes ( Older X's are smaller & Newer X's being slightly larger )

It is JMO that RAW rifles commonly get purchased & tuning on them pushed to the limits of the platforms capability and is sadly many times outside what would be a much easier & sustainable state of tune if lowered a bit.
I find that if you keep a RAW in the area of tune as when it was purchased and don’t try to tune it to the limits of it’s capability, it will be very accurate and consistent...agree with Scott.
 
It is IMO .. pretty safe to say that when nearly ANY PCP platform that has a smallish size plenum for the power a tune is trying to extract, that it will be very touchy in pressure & hammer strike finding where the peak output will be found.
While also making note on 1000X rifles also having two different plenum sizes ( Older X's are smaller & Newer X's being slightly larger )

It is JMO that RAW rifles commonly get purchased & tuning on them pushed to the limits of the platforms capability and is sadly many times outside what would be a much easier & sustainable state of tune if lowered a bit.
Any idea about the volume of plenum of old HM1000X and newer HM1000X?
 
I've never seen any figures posted.
Measuring not that easy either as BOTH the mid block valve chamber and and lower Plenum chamber has components within there respective space.
Poppet / spring / end cap w/spring post are within mid chamber and Plenum has the regulators spool & bevel stack within its space.
* The combined Total of both the chambers creates the AKA: Plenum volume in these PCP's.
Difference in early and later volumes comes from the lower chamber becoming larger in I.D. and why the regulators threading screwing into the receiver also changed with the plenum volume update on newer 'X" rifles.
 
I've never seen any figures posted.
Measuring not that easy either as BOTH the mid block valve chamber and and lower Plenum chamber has components within there respective space.
Poppet / spring / end cap w/spring post are within mid chamber and Plenum has the regulators spool & bevel stack within its space.
* The combined Total of both the chambers creates the AKA: Plenum volume in these PCP's.
Difference in early and later volumes comes from the lower chamber becoming larger in I.D. and why the regulators threading screwing into the receiver also changed with the plenum volume update on newer 'X" rifles.
I modeled the blocks in solid works.

The early models are 18cc the later model are 29cc
Minus the poppet, and valve retaining spring and peg
 
RAW sends their guns out pretty much at peak performance. In your case, it sounds like you’re not trying to improve performance but simply get it back. Before adjusting anything I would remove the hammer spring and anything else associated with it. Then give it a good cleaning and a very light lubing. Perhaps something didn’t get put back together properly, or some material is restricting the original functionality.
I agree with this totally as I also went through the same thing first hand. A good cleaning and LIGHT lubing brought back the accuracy I was accustomed to. Give it a go. Worth the effort!
 
  • Like
Reactions: Pelletpimp
I modeled the blocks in solid works.

The early models are 18cc the later model are 29cc
Minus the poppet, and valve retaining spring and peg
Will assume PEG is actually REG ?
If volumes are that small it is no wonder why these rifles are Low ES ... but lack anything close to what larger plenum PCP's are producing for power these days.
 
Hi Guys,

I am in need of some help from the RAW Gurus.

Since I bought my RAW it has been nothing but amazing, won many competitions or placed in the top 5 with it consistently.
She came from the box shooting .22 JSB Redesigns at around 925ish. At a stage the hammer was removed to check for dirt (there was none), this is when my issues started.

Set the speed over a chrony to 928. But I never got the same results with it after that.

I also found that my 2 preferred batches, the one shoots around 15-20fps faster.
And off course the different readings I get from different chrony"s.

My question is this. How sensitive is the RAW to hammer spring adjustments?
Any insights would be appreciated.

This is just a longshot…

My understanding: The rifle was shooting great, you removed the hammer to check for dirt, then put it together and its not shooting as well… at the same velocity (928fps) and with the same pellets (sounds like you have a bunch of MRDs from same batch)

Could it be as simple as your stock bolts are not torqued the same as prior to your disassembly?
 
Thank you guys for all the advise!

Update on where I am with it.

Friday morning I took it to the range and shot groups whilst adjusting the hammer spring.
I stopped when I got a fairly good group at 25m.

Yesterday I shot 50m competition with it. My first card was my lowest total ever 197:eek:
I then turned the hammer in all the way and slowly started backing it out until it cocked. Shot some croups on the sighters and adjusted out until I got it to hold a group. Needless to say the whole process and stress was not conducive to good accuracy in a competition. At least I managed to get it to hold a group at 50, and shot a 231 in the second card.

Today I disassembled the hammer, and low and behold! Seems we put the hammer spring in the wrong way around when it was taken out. Was also quite dirty in there. Cleaned everything out, turned the spring around and re assembled. Fired a couple shots, and I am not sure if it is my imagination, but the shot cycle sounds better now.

Wednesday I will take it indoors and see if it is sorted now.

Hold thumbs!!

IMG_7399[1].JPG
 
Thank you guys for all the advise!

Update on where I am with it.

Friday morning I took it to the range and shot groups whilst adjusting the hammer spring.
I stopped when I got a fairly good group at 25m.

Yesterday I shot 50m competition with it. My first card was my lowest total ever 197:eek:
I then turned the hammer in all the way and slowly started backing it out until it cocked. Shot some croups on the sighters and adjusted out until I got it to hold a group. Needless to say the whole process and stress was not conducive to good accuracy in a competition. At least I managed to get it to hold a group at 50, and shot a 231 in the second card.

Today I disassembled the hammer, and low and behold! Seems we put the hammer spring in the wrong way around when it was taken out. Was also quite dirty in there. Cleaned everything out, turned the spring around and re assembled. Fired a couple shots, and I am not sure if it is my imagination, but the shot cycle sounds better now.

Wednesday I will take it indoors and see if it is sorted now.

Hold thumbs!!

View attachment 543469
I wouldn't think the direction of the hammer spring would matter???
 
Will assume PEG is actually REG ?
If volumes are that small it is no wonder why these rifles are Low ES ... but lack anything close to what larger plenum PCP's are producing for power these days.
I actually did it to build a custom bolt-on plenum.

But even after machining out the action to .8” which is larger than how raw ships them. I could only squeeze 33cc out of

This is calculating only the plunum volume minus the threads. So yeah the reg and the valve guts farther reduce this.

2f76bada-7f73-467d-a6ca-228c23c69210.jpeg
 
Last edited:
  • Like
Reactions: Chasdog