Hi

Thanks for the response, I have a mate that wants to bump the power up a bit to be able to shoot vermin, I service the rifles on a regular basis for bell target where the power is not so important, I understand that there was a fella on here going under the name of wonkey donkey that provided a kit to improve the 300s, I have tried to contact him without success, was wondering if there was anyone else?, I have ordered a couple of single springs.