R.A.W HM1000X Question

[Rock74]

Can a stock HM1000X in .22 be detuned to shoot 18 grain pellets at 30 - 40 foot pounds without changing parts from the factory? Is the reg able to work that low, will the factory HS work it? I understand the gun is set and tuned for hi power before they ship but I cant seem to find any info on the low end of things.

 

[Airgunmann]

It should be possible you wou need to set the reg to about 100 to 110 bar and back off the spring for the hammer you will want about 900 fps for 18 gr

 

[Ranchibi]

Like said above, drop reg and adjust HS. My .22 RAW HM1000x LRT is detuned to shoot 18gr pellets @ 950fps-36ft/lbs but had to cut 1 coil from the spring as I left the regulator alone. I think the lowest fps with a full spring was around 980fps, just back out the HS adjuster. The .22's come from the factory with regs set @ close to 140 bar as they are tuned to shoot 25gr Redsigned @ 950-ish. My barrel also likes NSA 17.5gr .2175 slugs on the same tune @ 935fps (but barrel needs to be clean for great accuracy with said slugs). Hope this helps.

 

[mubhaur]

I use different transfer ports for 18 grain and 25gr.

With the same reg pressure of 140 bars, I adjust the fps partially by using smaller transfer port and partially by reducing HST.

Smaller transfer ports for 18gr pellets provides better consistency than a bigger transfer port.

Umair Bhaur

 

[corny]

I think with the stock spring you’re going to have to cut the coils. Because the spring is set match the power required for said valve/plenum pressure.

Your going to have to much hammer when u lower the reg pressure and the adjuster doesn’t have enough range go back off that much.

Personally I would ask Martin for a second spring, leave the reg as is and cut the spring so it only cycles the valve enough for the 18gr jsb

Should make for a short crisp cycle


Yes the reg can be turned down, and works equally well.
However if you’re looking to jump between two tunes. Unless they are very equal in power requirements it’s best to get a couple parts.
I personally have a couple spare springs and a couple reg cores I can swap into the my reg body to quickly change the tune

 

[Rock74]

Thanks guys , Im looking at ordering the chassis version in the very near future and I figured it can be done but wasn't sure. It seams like it's not a problem then to pop out the reg and adjust it down and adjust the HS so they are in harmony, The biggest PIA will be the fine tuning which I already anticipate taking days.

 

[Rock74]

I think with the stock spring you’re going to have to cut the coils. Because the spring is set match the power required for said valve/plenum pressure.

Your going to have to much hammer when u lower the reg pressure and the adjuster doesn’t have enough range go back off that much.

Personally I would ask Martin for a second spring, leave the reg as is and cut the spring so it only cycles the valve enough for the 18gr jsb

Should make for a short crisp cycle

A second spring would definitely be in the works if cutting coils is the answer. Thanks

 

[Aggy]

The gun can be turned down easily,the best method would be stick a 16 “ barrel on it ideally choked to suit pellets or stick a Theoben valve in it ,much smaller ports