How Long to Leave an Air Rifle Cocked - Graybeard Outdoors
 
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post #1 of 9 (permalink) Old 07-01-2019, 04:18 PM Thread Starter
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Default How Long to Leave an Air Rifle Cocked

I have an older 22 cal. Benjamin model 392PA.
So far longest I've left it cocked is 12 hours.
Seemed to stay fully charged.


So...Any experience:
How long can I leave it cocked (6 pumps) w/o it bleeding down signficantly?


PS: Got varmint problem - Really need it ready to shoot.

Ray
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post #2 of 9 (permalink) Old 07-01-2019, 04:32 PM
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I have left my Crossman pellet pistol charged for over a month with three pumps and it still seemed to fire normally.
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post #3 of 9 (permalink) Old 07-01-2019, 06:29 PM
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#1). With any of the "pump ups" the first problem is that by compressing the air you heat it and it starts to cool immediately. Some loss of pressure.
#2). As I recall the instructions with my Benjamin, you were supposed to put 2 or 3 pumps in to keep the seals in place. That would be almost 60 years ago.
Ergo, best to pump "almost" and put the last couple in just before you shoot. How good your seals are and how long it will take to bleed down? This is where the cheapest break action shines. It don't compress until you pull the trigger. And any lube on the pellet helps too. Then there is dipping them in nicotine from the garden store and letting it dry. If it penetrates, it poisons. Luck. Happy Trails.
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post #4 of 9 (permalink) Old 07-01-2019, 06:31 PM
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Default it depends

on how good the seals are. IIRC your Benjamin has leather seals and if lubed properly, should hold for "a while"

lead, follow, or get out of the way!
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post #5 of 9 (permalink) Old 07-01-2019, 08:11 PM Thread Starter
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Thx guys,


Think I'll go with 6 pumps and if time before shot add a 7th.


Never though to chrony an air rifle.
But will next range visit.

Ray
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post #6 of 9 (permalink) Old 07-08-2019, 09:36 PM Thread Starter
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Oh well...


Pest seems to have left.
Was seeing it ever day, but
Haven't seen it in the last 7 days.
Rifle was pumped for a week.
Seemed to have lost some power when I fired it to today.

Ray
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post #7 of 9 (permalink) Old 07-10-2019, 06:11 PM
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I leave mine with a single pump. Have not had a problem in the six - seven years I've owned it.
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post #8 of 9 (permalink) Old 07-11-2019, 08:34 PM Thread Starter
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I've had mine since 1996.
And yes do leave it with 1 pump, also.

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post #9 of 9 (permalink) Old 07-25-2019, 11:55 AM
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The old 5MM Sheridan I inherited from a cousin was rebuilt a couple years ago. After testing it out for accuracy with a couple different pellets, I put a couple pumps in it and can tell by the way the forend is tight against the metal that it still has pressure in it. The Benjamin Marauder PCP which sets in the family room guarding the bird feeder last got pumped up a few weeks ago with no pressure loss showing on its pressure gauge. However, some pneumatics are not supposed to be stored pumped up because their seals are not designed for continuous pressure. I think that is a bad design.
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