big-a Posted September 18, 2011 Report Share Posted September 18, 2011 hello this is my first post and im already after some help after using a ruger 10 22 target with sak mod for 3 years ive just brought a new cz455 .22 varmint thumbhole with sak mod and pulsar n550 nv my problem is im using eley subs and after about 15 shots it gets realy loud as if its going supersonic ive tried switching the mods and tried winchester subs but its the same help please andy Link to comment Share on other sites More sharing options...
baldie Posted September 18, 2011 Report Share Posted September 18, 2011 The mod is heating up and letting gas escape around its circumference. Try a dm80, its a brilliant rimfire mod. Link to comment Share on other sites More sharing options...
brown dog Posted September 18, 2011 Report Share Posted September 18, 2011 Wow, interesting problem! If we talk crack and thump; is the loudness 'crack' ie the round going supersonic, or 'thump' ie muzzle noise? Link to comment Share on other sites More sharing options...
big-a Posted September 18, 2011 Author Report Share Posted September 18, 2011 Wow, interesting problem! If we talk crack and thump; is the loudness 'crack' ie the round going supersonic, or 'thump' ie muzzle noise? thanks for the quick response im no expert but it realy sounds as if the rounds are going supersonic just cleaned the barrel again and its quiet again could it be that as its only shot 100 rounds or so that it isnt run in ? Link to comment Share on other sites More sharing options...
big-a Posted September 18, 2011 Author Report Share Posted September 18, 2011 The mod is heating up and letting gas escape around its circumference. Try a dm80, its a brilliant rimfire mod. thanks for the helpfull advice but its strange the ruger 10 22 with the same mod doesnt have the same problem ? Link to comment Share on other sites More sharing options...
baldie Posted September 18, 2011 Report Share Posted September 18, 2011 Thats because part of the cartridge gas is being used to cycle the action, and also that gas is then lost via the open breech. Run some insulation tape around the joints on the mod and see if there is any difference. Link to comment Share on other sites More sharing options...
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