rompom Posted October 17, 2008 Report Share Posted October 17, 2008 I use a Umarex Airmagnum which has been great for the past few months, but with winter coming in I'm concerned it may lose some power due to the cold weather. It has been suggested that I get the rifle tuned to compensaet, then have its power tested at the local gun rooms to make sure I'm still legal, and then have this reversed when the weather warms up again. Is this good advice, and if so, is it an easy thing to do myself? Any help would be appreciated. Quote Link to comment Share on other sites More sharing options...
JK8 Posted October 17, 2008 Report Share Posted October 17, 2008 (edited) CO2 powered weapons are very underpowered when the winter comes in,.. indeed some on firering in sub zero temperatures, have been known to throw out what looks like snow flakes after the pellet leaves the barrel, Your problem is , if your gun is modified to perform at normal near 12 foot pounds in winter it will most definatlley be over the top when temperatures return to more warmer climes,...What then?? you and the person who does such a modification will be open to prosecution for using and/or suppllying a FAC rated weapon..Anyway CO2 powered weapons are only any good to take out sparrows , rats ,or any small birds/or such, If you want to kill rabbits/ pigeons/ etc, then please do yourself,(and your quarry)a favour, and use a springer or pc weapon to do so... Cheers. Edited October 17, 2008 by JK8 Quote Link to comment Share on other sites More sharing options...
hodge911 Posted October 17, 2008 Report Share Posted October 17, 2008 CO2 powered weapons are very underpowered when the winter comes in,.. indeed some on firering in sub zero temperatures, have been known to throw out what looks like snow flakes after the pellet leaves the barrel, Your problem is , if your gun is modified to perform at normal near 12 foot pounds in winter it will most definatlley be over the top when temperatures return to more warmer climes,...What then?? you and the person who does such a modification will be open to prosecution for using and/or suppllying a FAC rated weapon..Anyway CO2 powered weapons are only any good to take out sparrows , rats ,or any small birds/or such, If you want to kill rabbits/ pigeons/ etc, then please do yourself,(and your quarry)a favour, and use a springer or pc weapon to do so... Cheers. sorry mate but i dont agree with your comment on co2 in the last part of your post i have taken many rabbits/pigeon/crows with my non fac co rifle as have quite a few people i know and as i,m sure have many on the forum Quote Link to comment Share on other sites More sharing options...
JK8 Posted October 18, 2008 Report Share Posted October 18, 2008 You are quite correct there Hodge my friend,I should have said perhaps that in unskilled hands in cold weather that perhaps a springer or a PC rifle would do a better job on the quarry. I shot a rabit last year that looked ill, my mate skinned it and found 2 .177 pellets in it just about 1/2" into the flesh, the only other person who I know who shoots on the same land had a .177 CO2 powered winchester underlever, which had the CO2 capsulls inside the butt plate, not powerfull enough, in my oppinion for vermin shooting. Quote Link to comment Share on other sites More sharing options...
Timelord Posted October 18, 2008 Report Share Posted October 18, 2008 I have similar thoughts as I own a King Ratcatcher but I won't risk making my gun illegal. I've just gone PCP with a Theoben S-TYPE in .177. The CO2 Ratty is now for barns and ratting on milder days and the Theoben will be the everyday gun... Quote Link to comment Share on other sites More sharing options...
Biffo1262 Posted October 20, 2008 Report Share Posted October 20, 2008 (edited) Tuning a CO2 gun will make no difference whatsoever if the temperature is below that for it's optimum expansion ratio. It will still be under powered as all the CO2 has failed to vapourise. The trick is to increase the temperature. I shoot with my CO2 QB78's all Winter by using a hand warmer next to the breech or in the case of my guns with external bottles use an insulated wrap round them with a hand warmer next to the bottle. Tune you gun by all means for more power BUT don't expect that increase in power to show when the temperature of the propellant is to low. Warming your gas supply is the key with CO2. Anyway CO2 powered weapons are only any good to take out sparrows , rats ,or any small birds/or such, If you want to kill rabbits/ pigeons/ etc, then please do yourself,(and your quarry)a favour, and use a springer or pc weapon to do so. That remark is quite typical of a shooter who hasn't used a CO2 gun and trots out the biased hype of others with no CO2 rifle experience; it annoys me so much. My three CO2 rifles and my S400 Classic shoot at the same power level 11.3ft/lbs all year round. A CO2 rifle is perfectly capable of matching a PCP both for power and accuracy and quite frankly I rarely use my S400, preferring the AR2079 .177 and my XS78 .22 any day; Winter or not. A few simple precautions is all it takes - it's hardly rocket science. The information is all in the Internet for all to read. Edited October 20, 2008 by Biffo1262 Quote Link to comment Share on other sites More sharing options...
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