Umarex Copper coated H&N vs normal lead in Notos

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Ltomlin

Ltomlin

Member
Feb 2, 2025
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Tried some new "copper coated" .22 cal H&N 14.66 grain pellets in the NOTOS today just out of curiosity. Put them up against my normal JSB Jumbo Heavy 18.13 and JSB Exact 13.43 grain. Was looking to try something "lead free" or close to it, and these appear to be somewhat so, at least on the outside surface. Have to say, the copper coated did NOT perform very well.

Regulator set at 1250 psi, Huben valve with .42 liter CF bottle filled to 4500 psi, all ports opened to 4.5mm, STX 500mm barrel kit. After 45 shots it still had 3500 psi left in the bottle.

Attached below are my 3 x 15 shot string results (JSB 18.13 on left, H&N Copper in center, and JSB 13.43 on right). Huge variance in the copper ones for sone reason in FPS, also in FPE not shown... I want to try the "alloy" version next. Anyone else have any experience and comments using lead free pellets?

Look forward to any insight, comments, etc from all the wisdom holders out there on any lead free alternatives.

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Ltomlin said:
Tried some new "copper coated" .22 cal H&N 14.66 grain pellets in the NOTOS today just out of curiosity. Put them up against my normal JSB Jumbo Heavy 18.13 and JSB Exact 13.43 grain. Was looking to try something "lead free" or close to it, and these appear to be somewhat so, at least on the outside surface. Have to say, the copper coated did NOT perform very well.

Regulator set at 1250 psi, Huben valve with .42 liter CF bottle filled to 4500 psi, all ports opened to 4.5mm, STX 500mm barrel kit. After 45 shots it still had 3500 psi left in the bottle.

Attached below are my 3 x 15 shot string results (JSB 18.13 on left, H&N Copper in center, and JSB 13.43 on right). Huge variance in the copper ones for sone reason in FPS, also in FPE not shown... I want to try the "alloy" version next. Anyone else have any experience and comments using lead free pellets?

Look forward to any insight, comments, etc from all the wisdom holders out there on any lead free alternatives.

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My experience with lead free is not good at anything past 35y. i found the same thing with my notos. I tried the baracuda Power and FT power. No go.

JTS/AEA 18.1, JSB 18.13 were no.1 followed closely by the AEA 15.9-JTS 16.08, JSB 15.89.


1250PSI? For a notos and you're getting those velocities? that's wild. I ported too, but for over 761 it had to be over 1800
 
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RabbitofCaerbannog said:
My experience with lead free is not good at anything past 35y. i found the same thing with my notos. I tried the baracuda Power and FT power. No go.

JTS/AEA 18.1, JSB 18.13 were no.1 followed closely by the AEA 15.9-JTS 16.08, JSB 15.89.


1250PSI? For a notos and you're getting those velocities? that's wild. I ported too, but for over 761 it had to be over 1800
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Hi - good info thanks. And yes, unless my gauge is way off it’s around 1250? Pics of both attached. The valve is ported along with block, plenum and one other spot all drilled out. I assume the 500mm barrel also certainly helps. Hope it’s not that far off of pressure.

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Ltomlin said:
Hi - good info thanks. And yes, unless my gauge is way off it’s around 1250? Pics of both attached. The valve is ported along with block, plenum and one other spot all drilled out. I assume the 500mm barrel also certainly helps. Hope it’s not that far off of pressure.

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Hey if it works it works. MIne had a 600mm FX liner. C88 makes a 100mm extension kit and will send corresponding carbon shroud if you ask. That's cool if yours actually does that at 1250.
 
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I bought a Sekhmet gage to set the auto shutoff of my compressor .
i had a quick disconnect on the gage and use it on the fill hose . Set the auto shut off and run the compressor. the gage tells me if the shutoff is at the correct fill pressure. then bleed the hose and fill my guns . I have more confidence in this gage being correct .
P.S. around $ 130 if my memory isn't as off as some gages
 
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beerthief said:
I bought a Sekhmet gage to set the auto shutoff of my compressor .
i had a quick disconnect on the gage and use it on the fill hose . Set the auto shut off and run the compressor. the gage tells me if the shutoff is at the correct fill pressure. then bleed the hose and fill my guns . I have more confidence in this gage being correct .
P.S. around $ 130 if my memory isn't as off as some gages
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i would just degas. and when filling watch the compressor pressure as beerthief says.. when you hit 1250 is your regulator gauge at 1250? then yes, more confidence.
 
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Thanks for the input. I hooked it back up to compressor and filled back to 4000 psi, my Huben gauge on the input (fill) side reads exactly 4000 psi as does my compressor gauge. The 1250 psi is on the regulated side. I bled it all down to about 1k psi, hooked compressor back up and ran it until pressurized and all 3 gauges read 1k psi.

I might try another gauge on the regulated side just to triple check, but it appears all 3 are in sync at varying pressures. Going to fill all way back up today and see how many total shots I get before it equalizes @ 1250 on both sides of the regulator. My math says it should get around 140 full shots before it goes below the regulator @ 1250 psi but we will see.
 
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Ltomlin said:
Thanks for the input. I hooked it back up to compressor and filled back to 4000 psi, my Huben gauge on the input (fill) side reads exactly 4000 psi as does my compressor gauge. The 1250 psi is on the regulated side. I bled it all down to about 1k psi, hooked compressor back up and ran it until pressurized and all 3 gauges read 1k psi.

I might try another gauge on the regulated side just to triple check, but it appears all 3 are in sync at varying pressures. Going to fill all way back up today and see how many total shots I get before it equalizes @ 1250 on both sides of the regulator. My math says it should get around 140 full shots before it goes below the regulator @ 1250 psi but we will see.
Click to expand...
Definitely not a bad thing to get those results at that pressure
 
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