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Cool down time of Glass reinforced plastic mortar tube ?


laserkoi

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I have a few 4 “ shells to fire and I am wanting to know is there a cool down time before reloading Glass reinforced plastic mortar tubes ? i am aware that the tube will want any debris removing before hand .just wanting to know the approx length of time required . Thanks
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Are you just wanting to shoot a few shells with no time restraints, or pace them for a display? If you are using one mortar just to shoot a few for fun, just wait a few minutes between shoots and ensure there is no hot debris inside before reloading. Fiberglass does not get soft with repeated firing like HDPE does, which is why I prefer it for open shooting. Just be positive there is no source of ignition and the shell seats fully on the plug and you should be alright. If you are shooting a small display, I highly recommend using one mortar per shell and avoiding reloading.
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thanks for the reply,s

its just for fun . ,3 x 4" tubes and 16 shells . and a large private field :P

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If you cycle the tubes, you probably shouldn't have much of a problem. If you light and retreat to a safe distance before the lift, by the time you return, load the next mortar, light and repeat the first one should be good to go again. We have a similar number of fiberglass mortars that are reloaded repeatedly at club shoots and they usually handle the load just fine.
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thanks Mumbles . that sounds a nice plan . i have fused 20cm x 3mm visco to 10 cm exposed black match before entering the pipe match so should give 30 secs to retreat to a safe distance.
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