If one were to switch from 25 grain JSB Kings to 33 grain JSB King Heavies, then turn up the hammer spring to get the velocity back up the same speed as the 25 grains, would that put undue pressure on the seals that could damage the gun/seals?
Heavier pellets = more pressure on seals?
- Thread starter Cliff_Allen
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I don't have a definitive answer but I don't think there would be an issue. Most of the pressure is going out with the pellet and the weight difference is actually minimal in pellets. Most well made airguns are designed for the pressures of the heavier pellets. I've taken guns to to 30% more than their factory setting with no issues.
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I have guns running way past their factory power levels with much heavier lead and no issues at all. Most of today's gun are engineered more than sufficiently to increase power.
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I don't know what you're shooting the Heavies in, but I can't get them to shoot well in my AT44-10. The Kings are tack holers, as are the PolyMags. Personally, the extra punch the Heavies might give isn't worth the effort to increase the speed.
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Nope. The seals are built to take more pressure than you can get by turning up the power. Most Airguns have the seals tested for way more power than you can tune the gun for. Unless you are making some major changes to the airflow system of the tank, it should not be a problem.
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Not likely. A heavier pellet would stay in the barrel a fraction of a second longer so a longer ( small amount eh ?) burst of pressure on the pellet probe seal but that's it. All internal O-rings see the same pressure all the time - roughly-.
When I had a .458 DAQ I tried a slug from Mr.Hollow Point ammo and one got stuck in the barrel! Full psi, load, close bolt, cock fire, NOTHING, nopt even a small leak, ugggg. Cocked & fired again, slight leak from end of barrel, cocked & fired again and the slug came out but for a good full minute the breech seal was holding back a full charge, scary but no harm.
No sometime, heavier is also larger, think Korean heavies, if your rig has the probe o-ring inside the barrel the larger pellet scraping pushing on it may wear that seal faster but that's all I can think of.
In my experience it is very common for a pre-charged rifle to go 10 years without the need to replace any seal/o-ring.
John
When I had a .458 DAQ I tried a slug from Mr.Hollow Point ammo and one got stuck in the barrel! Full psi, load, close bolt, cock fire, NOTHING, nopt even a small leak, ugggg. Cocked & fired again, slight leak from end of barrel, cocked & fired again and the slug came out but for a good full minute the breech seal was holding back a full charge, scary but no harm.
No sometime, heavier is also larger, think Korean heavies, if your rig has the probe o-ring inside the barrel the larger pellet scraping pushing on it may wear that seal faster but that's all I can think of.
In my experience it is very common for a pre-charged rifle to go 10 years without the need to replace any seal/o-ring.
John
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Awesome! Thank you so much for the replies! I'm going to try the heavies in a Royale 500. Ted said on his facebook page he was getting next level accuracy from them out of his Impact, gonna give it a whirl!
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