willhunt4coues Report post Posted August 7, 2015 I actually rigged up a battery powered air mattress pump and hose and attached it to a case and stuck it in my action for OCW testing believe it or not it works GREAT. Go get an portable air matress pump, some hose, and cut the head off a case. Works great and you can make it in minutes. 1 Share this post Link to post Share on other sites
scoutm Report post Posted August 7, 2015 Buddy of mine, who is an extremely knowledgeable shooter uses co2? Something hooked up to a tank and it works wonders. I've had an idea floating in my head that I've yet to make, but think it would work. 5 gallon bucket with lid Air mattress pump Hose/tubing Ice/dry ice Full the bucket with either ice or dry ice and put a towel or something to keep the water from getting I the pump. Place pump in bucket, cut a hole in the lid big enough for the tubing to come out. Attach tubing to pump, then put tubing in the chamber and turn it on. In MY head this works great but I'm yet to try it out. Here's probably simpler design of the same idea - 1. fish tank or nebulizer pump - something like this... http://www.theoxygensuppliesshop.com/medneb-airial-nebulizer-compressor-system-mq5600.html?acc=cfcd208495d565ef66e7dff9f98764da&gclid=CLeX3KS_l8cCFcNhfgodMeUE1g http://www.123ponds.com/06404.html?utm_source=06404&utm_medium=shopping%2Bengine&utm_campaign=googleproducts&gclid=CLmQg7DCl8cCFcOBfgodieYE-w 2. extra tubing maybe 10-15 feet - the longer the tube the cooler the air 3. cooler full of ice Connect tube to pump, coil majority of tubing in cooler full of ice - leave enough of tubing exposed so it can be placed in the muzzle and turn the pump on and blow nice cool are down the barrel. Share this post Link to post Share on other sites
PRDATR Report post Posted August 7, 2015 http://www.waresdirect.com/products/Office-Supply/Innovera/CompreSed-Gas-Duster-522777?trackURL=froogle&gclid=CKOH3brml8cCFQZbfgodeQsBBg Share this post Link to post Share on other sites
CaptainObvious Report post Posted August 8, 2015 Good ideas fellas....You might be able get a 12v pump, 10-12' of tubing that fits down your barrel and a bucket full of ice/water and just recirculate the cold water through the barrel too... Share this post Link to post Share on other sites
ThomC Report post Posted August 8, 2015 The first shot out of a cold barrel is the only one that counts. No amount of tricks are going to duplicate that. Buy a ranch set up a range and every morning go out and take a shot. Share this post Link to post Share on other sites