hi guys,can somebody tell how to get lower muzzle noise out of my m10?i installed a huma reg and set it to 50 bars - very low. shoting now with 18 fpe - that was expected BUT its still so ()&(^)(&() loud. its impossible to shot in the backyard. my springer weihrauch hw80 does 15 fpe and the muzzle noise (with weihrauch ldc) is much more silent. the spring mechanics are even louder!!so whats wrong ? maybe the stock LDC is &^^&? and i think my m10 is waisting a lot of air.
Was looking at the M10 notes just this morning.It's a big, heavy, simple, beast of an airgun.Rifle was simple-tuned (basically the striker spring tension set to run close to the start of a 4% bell curve with a full fill....and if you think that's really is all that easy, I din't mean "simple" in those terms...more like "univariable").Came with a 5mm and a 4mm port.Yep..can take out, rotate 90 degrees, drill a new port, plug the old one, and make a new set screw "dimple".With two heavy weights: 25.4 JSB and a 35.4gr. cast slug. There was a sample of 30.? swaged pellets as well, but not enough for all the tests, so I lieft the results out of this chart:Port size: Pellet/4% shots/energy total 4% energy in a fill:5mm 25.4gr / 19 / 50.8fpe 965fpe per fill 35.4 / 18 / 55.8fpe 1005fpe per fill4mm 25.4 / 20 / 50.1fpe 1002fpe per fill 35.4 / 20/ 53.2fps 1011fpe per fill3mm 25.4 / 25 / 44fpe 1056fpe per fill 35.4 / 23 / 48.1fpe 1106fpe per fill2.5mm 25.4 / 35 / 30.3fpe 1060fpe per fill 35.4 / 35 / 30.5 fpe 1067fpe per fillPretty much settled on the 25.4gr. JSB's. The energy penalty isn't great enough to overcome the accuracy advanatage.(In case you are wondering....had two targets set up. Pharted around adjusting the scope between each group on the below tarrget. TRUST ME...they do NOT shoot to neary the same POI.)Now a lot of things might strike you about the above....which may not be the things I took away from the results.My take(s):1. Pellet weight does seem to favore energy in this one (which is a bit of a "hot rod").2. By the time the transfer port was strangled off to 2.5mm, there wasn't much difference in energy or shot count from the two test heavy weights. Might have seen more of a difference with lighter weight pellets/slugs.3. Reducing the transwfer port from 5mm to 4mm (which is a boat load in terms of area) didn't do "jack" for the 25.4gr. pellet. Did have a bit of an effect on the heavy weight slug, but not a whole lot (5-6% energy rerduction is enough to mention).4. Of the choices, decided I kind of liked THIS airgun to run fast/powerful. Have other airguns that get long shot counts/lower energy; this one is reserved as a .22 "thunper"....so I kewpt the 4mm port.If this was my only PCP, I'd likely have gone with the 3mm port....but something about a simple .22 with 20 shots/ 50 foot pounds kind of makes me pleased, so I kept it at 4mm even though that's not really the most efficient.