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    Tuning HDR.50 tuning guide (power + no more jams)

    Yes 16Joule upgrade is nice, but to get real power ("beyond multiverse") + many more shots per fill, HPA upgrade is necessary. I've seen youtube of video of people using 1100 psi and 1200 psi with their HDR50. Probably you can go higher than that, but certainly not PCP level (3000 psi) as...
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    HDR .50 converting to .38 , Velocity/barrel questions

    Seems like reducing caliber size isn't such good idea. Airgun need larger caliber/ longer barrel length to increase power. so smaller caliber will give you less power. There is video on youtuber who tested his HDR50 with 4" extension and without and he found 4" barrels increased power output...
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    Tuning HDR.50 tuning guide (power + no more jams)

    Thanks this is an awesome guide to boost power for Umarex HDR50/TR50. One thing I would like to note is that most TR50 sold in USA is missing the flow regulator disk inside CO2 cartridge chamber. So one idea might be to remove the valve block (as per your instruction) and since valve block is...
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    What company makes the best air guns?!

    "PCP's are NEVER about just the cost of the gun, there's a lot of support equipment & expense that go with them". I have cheap Beeman Chief 2 and cheap chinese air pump. Altogether, I spent around $250. And so far my PCP rifle is really cheap to shoot! So what am I missing about "lot of...