Adjusting the Power on my Stoeger XM1 S4

My Stoeger XM1 was wildly inaccurate, mainly due to very inconsistent power. In this video I change the transfer port to get it under control.
These transfer ports fit the Stoeger XM1: www.trrobb.com/details/p14494...
CJ Outdoors has done a three part video, changing the transfer port: / @cjoutdoors8264
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[@Maddogairguns]

It didn't exactly tame the power, but it is more consistent. Further testing required to see about accuracy.

[@airgunsniper-elite7385]

If you regulated this you could probably treable the shot count, set at 12 ft/lbs.

[@Maddogairguns]

@airgunsniper-elite7385 I have since stripped it down further and found the regulator, have screwed it down so it's now sitting around 19 joules/14ft lbs fairly consistently, might screw it down some more. Just weighing pellets now, they seem quite varied.

[@airgunsniper-elite7385]

@Maddogairguns It's a shame that they didn't make a larger cylinder, as shot count will always suffer. I have just had to fix my valve stem on an old AGS PCR1 rifle. That has a slim cylinder and is probably only good for 20 shots, making it a hunting rifle rather than a target rifle. Looking at the Italian design, the Stoeger is definitely an eye catcher, and it is great value for what you get.
I am waiting for a new hammer spring for the PCR1 and will be posting a video on the process when complete.
Happy Shooting
Mark Holding.

[@Maddogairguns]

@@airgunsniper-elite7385 Yes it is a nice rifle, I probably should have sent it back being as it was full power. I am going to replace the hammer spring on mine. I have heard a lighter spring works well on this rifle, just not sure where to get one from. All the ones I have seen are upgraded for more power.

[@taunteratwill1787]

The man cave with the UK castrated air guns "all the way up" to 12 foot pounds! 😂

[@brashutecaruso9668]

Mad Dog, can I ask where you purchased that bipod for the XM1?

[@Maddogairguns]

Got it from Amazon.fr: amzn.to/49yODWs

[@user-bd4xd2oj9x]

What is the solution to air leaking from the gun?

[@gman9543]

Looks like you need to back off the hammer spring. Seems like it's using more air than it needs to be using, and the reduction in transfer port just created a resistance to transfer which stretched the amount of air being used. Increase in velocities might be from the finish/polish or mating of the replacement transfer port. If you back off the hammer spring now, you should be able to maintain the same speed and increase your shot count.

[@Maddogairguns]

Theres no adjustment on the hammer spring, I have been looking for a lighter one that will fit and give that a try.