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  #31  
Old 05-22-2017, 08:56 AM
elkhunter11 elkhunter11 is online now
 
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I purchased my Air Arms from Airgun Source, and the service was quick ad their prices were good.

The Straightshooters site provides actual velocities with specific pellets for many makes and models.
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  #32  
Old 05-22-2017, 11:05 AM
Tactical Lever Tactical Lever is offline
 
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Quote:
Originally Posted by bobtodrick View Post
See here about trajectory. At under 500fps it will be less pronounced than the PAL rated guns, but still needs to be considered. http://www.crosman.com/get-hunting/airgun-ballistics

Absolutely correct. The cheap Chinese guns all have suspect ratings, and Gamo is reputed to be the very worst.
Any of the decent guns (Crosman, Daisy, Diana, Slavia, etc) all measure with lead (though lightweight pellets). The Chinese and Gamo all measure with very lightweight non lead pellets that mostly have absolutely terrible accuracy.
I did not see anything suggesting a difference other than referencing a higher MV.

Most non pal air rifles are tuned to just under, no matter the caliber.

Air you telling me that 2 JSB Jumbos, both starting at 450 fps will have a different trajectory if they are different caliber?

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  #33  
Old 05-22-2017, 02:11 PM
bobtodrick bobtodrick is offline
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Quote:
Originally Posted by Tactical Lever View Post
I did not see anything suggesting a difference other than referencing a higher MV.

Most non pal air rifles are tuned to just under, no matter the caliber.

Air you telling me that 2 JSB Jumbos, both starting at 450 fps will have a different trajectory if they are different caliber?

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Huh!!
We're comparing .177 vs .22...and it clearly states in the 3rd paragraph that at the same mv the .22 will drop more.
JSB Jumbos are only in .22...no one said anything about comparing two .22 against each other.
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  #34  
Old 05-22-2017, 02:52 PM
Tactical Lever Tactical Lever is offline
 
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Quote:
Originally Posted by bobtodrick View Post
Huh!!
We're comparing .177 vs .22...and it clearly states in the 3rd paragraph that at the same mv the .22 will drop more.
JSB Jumbos are only in .22...no one said anything about comparing two .22 against each other.
A .177 caliber air rifle has one advantage because higher velocity results in a trajectory with less curvature.

The above is something I copied from the article you directed me to.

It does not say anything about a 177 shooting flatter given the same type of pellets.

I used the Jumbos as a baseline. Substitute any pellets of the same type you wish.

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  #35  
Old 05-22-2017, 03:33 PM
bobtodrick bobtodrick is offline
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Quote:
Originally Posted by Tactical Lever View Post
A .177 caliber air rifle has one advantage because higher velocity results in a trajectory with less curvature.

The above is something I copied from the article you directed me to.

It does not say anything about a 177 shooting flatter given the same type of pellets.

I used the Jumbos as a baseline. Substitute any pellets of the same type you wish.

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So let me get this straight...your telling me that a .22 pellet, which is at least twice the weight of a comparable (as in domed, pointed, wad utter) isn't going to drop more if they both start off at the same speed?
Uhhh...don't think so.
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  #36  
Old 05-22-2017, 03:37 PM
elkhunter11 elkhunter11 is online now
 
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Quote:
Originally Posted by bobtodrick View Post
So let me get this straight...your telling me that a .22 pellet, which is at least twice the weight of a comparable (as in domed, pointed, wad utter) isn't going to drop more if they both start off at the same speed?
Uhhh...don't think so.
It would depend on the B.C. of each pellet. The one with the higher B.C. will have a flatter trajectory.
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  #37  
Old 05-22-2017, 04:15 PM
Tactical Lever Tactical Lever is offline
 
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Quote:
Originally Posted by bobtodrick View Post
So let me get this straight...your telling me that a .22 pellet, which is at least twice the weight of a comparable (as in domed, pointed, wad utter) isn't going to drop more if they both start off at the same speed?
Uhhh...don't think so.
Gravity, SD, and BC works the same regardless of the size.

What drops more; a 300 Blackout, or a .22 LR?

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  #38  
Old 05-22-2017, 04:23 PM
sinawalli sinawalli is offline
 
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Work with a guy who shoots a .357 calibre pellet gun at 1000 fps. Says it's very accurate.
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  #39  
Old 05-22-2017, 04:59 PM
Tactical Lever Tactical Lever is offline
 
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[URL]http://www.photosbykev.com/wordpress/userfiles/pelletdata.htm/URL]

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  #40  
Old 05-22-2017, 05:06 PM
Tactical Lever Tactical Lever is offline
 
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http://www.photosbykev.com/wordpress...pelletdata.htm

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  #41  
Old 05-22-2017, 05:12 PM
Tactical Lever Tactical Lever is offline
 
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Ok, worked that time and and has useful data for comparison.

I learned a little by perusing the list. I thought that these should be a lot closer, but it appears that with most of the pellets, the BC changes depending on caliber. Some in favour of the bigger bore, and some smaller.

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