Installed the full power ARH mainspring in the RWS 34

[Ike the GSD]

The mainspring I ordered for the RWS 34 from ARH arrived a day early, so this afternoon I installed it and all I can say is HOLY COW👀!  The Vortek 33 coil mainspring was making about 707 fps with the Crosman Ultra Magnum 10.5 gr. domed pellets, 814 fps with the 8.4 gr. Norma Golden Trophy FTT and about 714 fps with the 10.49 H&N Barracuda Hunters.
With the ARH mainspring the Crosman 10.5 gr Ultra Magnums made 754-762 fps, the Norma Golden Trophy 8.4 gr FTT's made 874 fps and the 10.49 gr H&N Barracuda Hunters made 778 fps. This was my first purchase of an ARH mainspring and I am very pleased with the results👍 I did retain the Vortek piston seal I just installed in case anyone was wondering. With the new mainspring, this rifle makes the steel lollypop spinners ring like a blacksmith anvil, I just love it LOL!

[Kragman1]

Ike - can you post a link to the ARH spring you used, or give us the dimensions?

Thanks!

[Ike the GSD]

Ike - can you post a link to the ARH spring you used, or give us the dimensions?

Thanks!

Here you go Brian👍

https://www.airrifleheadquarters.com/catalog/item/251488/10099208.htm

[Ike the GSD]

To anyone interested in installing this spring, you FOR SURE are going to need a spring compressor just so you know👍

[MDriskill]

I recently re-did an older 34 for a friend with the same combo - ARH spring + Vortek seal. Same excellent results.

[Denby95]

I have the ARH GRT in my D34 .22 cal and it produces 15.5 FPE. Been very happy with it.