View previous topic :: View next topic |
Author |
Message |
English Mike Super Member
Joined: Jan 08, 2007 Posts: 1709 Location: Whitehaven, Cumbria, UK
|
Posted: Sun May 27, 2018 4:55 pm Post subject: Re: Pellet Rifles |
|
13.125gr(that's grains, not grammes...) pellet at 637fps MV.
Non metric calculation
637x637x13.125÷450,240=11.82ft/lbs energy.
450,240 is twice gravitational acceleration in fps multiplied by the number of grains in a pound.
Don't ask me why it's used but it produces the result needed.
|
|
Back to top |
|
|
PaulS Super Member
Joined: Feb 18, 2006 Posts: 4330 Location: South-Eastern Washington - the State
|
Posted: Sun May 27, 2018 5:34 pm Post subject: Re: Pellet Rifles |
|
2 x 32.17 x 7000 = 450380 (if you round the numbers differently you get slight variations in the value - the difference is very small.
You want foot pounds so you need to convert from grains to pounds (7000)
You have to divide by g (32.17) to convert from feet per second to the foot pound desired
the 2 is needed to get the correct energy value when working with non-relativistic speeds.
Energy = Mass x Velocity x Velocity / 2
At relativistic speeds it can be E= Mass x velocity x velocity as in E=MC^2 (No division by 2)
_________________ Paul
__________________
Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads |
|
Back to top |
|
|
slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
|
Posted: Wed May 30, 2018 4:22 am Post subject: Re: Pellet Rifles |
|
Aloysius wrote: |
SJ, a rubber band (a piece of innertube) with little holes that hold pellets can shorten your reloading time. You can put this band on your left wrist or on the stock of your rifle. |
Aloys, like this?
Description: |
|
Filesize: |
156.81 KB |
Viewed: |
4843 Time(s) |
|
_________________ "To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt
"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein |
|
Back to top |
|
|
Aloysius Super Member
Joined: Nov 03, 2009 Posts: 2438 Location: B., Belgium
|
|
Back to top |
|
|
English Mike Super Member
Joined: Jan 08, 2007 Posts: 1709 Location: Whitehaven, Cumbria, UK
|
Posted: Wed May 30, 2018 2:35 pm Post subject: Re: Pellet Rifles |
|
I think I've found the answer to the night time rat problem...
Description: |
|
Filesize: |
205.29 KB |
Viewed: |
4831 Time(s) |
|
|
|
Back to top |
|
|
English Mike Super Member
Joined: Jan 08, 2007 Posts: 1709 Location: Whitehaven, Cumbria, UK
|
|
Back to top |
|
|
slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
|
Posted: Wed May 30, 2018 2:41 pm Post subject: Re: Pellet Rifles |
|
English Mike wrote: |
And no, my bench isn't usually in that much of a mess. |
The thought never crossed my mind. Really. That night scope captures your focus.
_________________ "To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt
"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein |
|
Back to top |
|
|
Deer Sniper Super Member
Joined: Apr 26, 2007 Posts: 539
|
Posted: Wed May 30, 2018 2:48 pm Post subject: Re: Pellet Rifles |
|
slimjim wrote: |
English Mike wrote: |
And no, my bench isn't usually in that much of a mess. |
The thought never crossed my mind. Really. That night scope captures your focus. |
Ain't that the truth!
|
|
Back to top |
|
|
slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
|
Posted: Wed May 30, 2018 3:05 pm Post subject: Re: Pellet Rifles |
|
Aloysius wrote: |
Next time punch your holes instead of cutting them with a knife as you did now (I think). Small things can make life easy |
Aloys, you may be right but the punch I have is too big for a .177 pellet. I'll live with this for now. Thanks.
_________________ "To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt
"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein |
|
Back to top |
|
|
Aloysius Super Member
Joined: Nov 03, 2009 Posts: 2438 Location: B., Belgium
|
Posted: Thu May 31, 2018 12:50 am Post subject: Re: Pellet Rifles |
|
SJ, a hot nail or needle could also do the trick...
and I think you used a tube of a bicycle, I always use a piece of a cartube, 1 layer is a little ticker then. (maybe you only have tubeless wheels?
|
|
Back to top |
|
|
DallanC Site Admin
Joined: Jan 18, 2005 Posts: 3571 Location: Utah
|
Posted: Thu May 31, 2018 11:27 am Post subject: Re: Pellet Rifles |
|
English Mike wrote: |
I think I've found the answer to the night time rat problem... |
I've watched quite a few night-time rat shoots from people over in europe. ITs oddly satisfying to watch them rack up 80-100 kills per night.
Other fun videos to watch is farmers digging through manure piles to scatter the rats and packs of rat terriers chasing them down killing them.
-DallanC
|
|
Back to top |
|
|
slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
|
Posted: Thu May 31, 2018 6:28 pm Post subject: Re: Pellet Rifles |
|
Aloysius wrote: |
SJ, a hot nail or needle could also do the trick...
and I think you used a tube of a bicycle, I always use a piece of a cartube, 1 layer is a little ticker then. (maybe you only have tubeless wheels? |
Aloys, I've tried it out a couple of times and it is working fine. Not to thick to interfere with insertion into the bore. Yes, I have some car tubes for my 1960 MGA with wire wheels.
_________________ "To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt
"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein |
|
Back to top |
|
|
English Mike Super Member
Joined: Jan 08, 2007 Posts: 1709 Location: Whitehaven, Cumbria, UK
|
Posted: Fri Jun 01, 2018 5:58 pm Post subject: Re: Pellet Rifles |
|
It's heading towards 02:00 here & I'm loath to go to bed as I'm having so much fun.
Put up a piece if fibreboard in the back yard earlier today & zeroed the NV onto a sharpie cross on it.
Smeared the cross with peanut butter & set the rifle up on the breakfast bar after moving my PC monitor out the way.
Trigger's horrible so I'm going for centre of mass rather than head shots but I know I've clobbered four of the buggers so far tonight.
Not particularly ethical I know but for rats I make an exception & two at least are lying in view through the NV.
I need to find out what leads I need for the video outlet from the scope...
I need to dismantle the dismal trigger too.
The view from over my desk (dark rectangle's the open door... ).
Description: |
|
Filesize: |
157.61 KB |
Viewed: |
4730 Time(s) |
|
|
|
Back to top |
|
|
slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
|
Posted: Sat Jun 02, 2018 2:25 pm Post subject: Re: Pellet Rifles |
|
Yes, that feeling of satisfaction when you connect. I've gotten 3 so far today and two were hiding showing just one eye watching me. Off-hand weak side to boot. One was by the bird feeder in front of the kitchen window. I ended up having to clean the window. Rats with tails!
_________________ "To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt
"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein |
|
Back to top |
|
|
OldSchoolRanger Member
Joined: Feb 15, 2017 Posts: 88
|
Posted: Sun Jun 30, 2019 10:06 pm Post subject: Re: Pellet Rifles |
|
[/quote]
An air rifle is classified as a firearm in Australia mate, and it's illegal to discharge a firearm in a residential area. You even need to have a firearms licence to own one and then the firearm (air rifle) also has to be registered with the Police...and that's after getting a Permit to Acquire approved by the Police to actually purchase one.
I could give it a real good workout around here on Indian Minors etc...if I could get away with it.[/quote]
LOL! Oh Yeah! Me too!
|
|
Back to top |
|
|
|