Choosing the best pellet for your stock 22XX

Choosing the best pellet for your stock 22XX

Joined: February 10th, 2010, 3:02 am

May 21st, 2011, 12:57 am #1


This is another little thing i did a while back. I had an extra barrel so no disassembly was required for this demo.

My B51 likes the CM and Baracudas but my 2240 gets finicky at all but the Baracudas past 15yrds. I couldn't for the life of me figure out why i couldn't get sighted in as quickly when it came to certain pellets. One day i disassembled my gun with a pell still in the barrel and this is what i found about pellet choices.

<img alt="PelletChoices.jpg" src="http://www.network54.com/Realm/stroage/ ... hoices.jpg">

You can easily see the depth of each pellet when loaded in the barrel. The Silver Bear (below) is less than half way past the port hole. This allows air pressure to get around the head of the pellet before it moves forward and the skirt seals the barrel. The remaining air then has to propel the pellet while air is sealed between the head and skirt. My knowledge of physics tells me that this pocket of pressure creats an ill effect on the pellet upon exiting the barrel. 

<img alt="Silver_Bear.jpg" src="http://www.network54.com/Realm/stroage/ ... pg">Silver Bear

The Silver Arrow and Crow Mag below insert to about the same point and except for fps have pretty much the same performance in my 2240 within 15yrds. After that the CM holds more true. Except for the weight 17.13g and 18.21, respectively, i think they are about even. 

<img alt="Silver_Arrow.jpg" src="http://www.network54.com/Realm/stroage/Silver_Arrow.jpg"> Silver Arrow

<img alt="Crow_Mag.jpg" src="http://www.network54.com/Realm/stroage/ ... .jpg">Crow Mag 

The Baracuda has been my pellet of choice and now you and i both know why. When the transfer port is in place there's nothing getting pressure but the bottom of the pellet. At 21g it's really not a CO2 pell. Glad we don't have that problem. 

<img alt="Barracuda.jpg" src="http://www.network54.com/Realm/stroage/Barracuda.jpg"> Baracuda

The depth at which the pellet sits is directly related to the way the inner skirt is designed. CPHP having flat bottoms set deeper in the barrel which is why you get good accuracy and consistency. Instead of extending your probe try changing to a flatter bottom pellet. I don't think the light weight CPHP perform as well at higher fps especially with shorter barrels.


www.PowerMax-HiPAC.com
Last edited by RodentRapture on May 23rd, 2011, 3:09 pm, edited 1 time in total.
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Joined: February 10th, 2010, 3:02 am

July 22nd, 2011, 1:26 am #2


I got my new ammo in the other day but it's been too windy to get out and shoot. But the cost of some of these i decided not to  waste any of them. I had some time on my hands so i chose to play a game of "stuff the pellet in the port" and "pelletsection". Once the wind dies down, hopefully in a few days, i'm going to shoot my 2-bit targets. I call them 2-bit targets becaues it's the same size as a $0.50 peice and just a bit smaller than a tree-rats' head.

To me it's a pretty simple open and shut case. I only shoot to rid my personal space (within 40yrds of my back door) of tree-rats, therefore, if i aim at his eye and hit him in the eye it's a great shot. If i aim at his eye and hit him in the head (another great shot) the darn tree-rat is just as dead. No need to have discussions about POA/POI or MV. I set my chrony up in front on my target backstop to check the fps at range (20yrds). After all, the rat won't be at the end of my muzzle so MV dosen't matter. You must be able to shoot a 2-bit group before you attempt to chrony this way. You could shoot the chrony by accident or catch a ricochet. 2-bit accuracy is all you need.

<img alt="Pellet_profiles.jpg" src="http://www.network54.com/Realm/stroage/ ... ofiles.jpg" width="391" height="282"> 

two old choices with four new ones. Shown in order of appearance. Each pell was pushed as far as the bolt o-ring would allow.

  <img alt="Daisy.jpg" src="http://www.network54.com/Realm/stroage/Daisy.jpg" width="393" height="278"> Cheapest pell out there. The Daisy pells don't seat very deep which means there's pressure between the head and skirt. Very soft and extreemly dirty but will get the job done within range. 

<img alt="CPHP.jpg" src="http://www.network54.com/Realm/stroage/CPHP.jpg" width="392" height="264">Same issue here with depth. I think these things are a bit over rated but they are very well made. Good price for the quality/quantity. To me it's a plinker pellet. 

<img alt="Kodiak.jpg" src="http://www.network54.com/Realm/stroage/Kodiak.jpg" width="409" height="250">Haven't had a chance to give these a shot but the fact that they seat deeper looks promising. 

<img alt="UltraMag.jpg" src="http://www.network54.com/Realm/stroage/UltraMag.jpg" width="396" height="229">These seated just about the same as the Kodiak. I'm looking forward to putting one of these in a tree-rats head. 

<img alt="Predator.jpg" src="http://www.network54.com/Realm/stroage/Predator.jpg" width="399" height="260">You definitely need a deeper probe for these. 

<img alt="HeavyLongRange.jpg" src="http://www.network54.com/Realm/stroage/ ... gRange.jpg" width="408" height="306"> These pells are extreemly cool. It's like a dart in a plastic sleeve. This seems to be the only style where all the pressure is behind the pellet. The rats are going to hate these 

<img alt="Tip_vs_Tip.jpg" src="http://www.network54.com/Realm/stroage/Tip_vs_Tip.jpg" width="399" height="257">

I dissected a couple of the tippers just to see what way going on and here's what you get. A heavier/harder metal tip (brass) vs. lighter/softer plastic tip (polymer). I wounder which one will do the most damage?
www.PowerMax-HiPAC.com
Last edited by RodentRapture on July 22nd, 2011, 8:24 pm, edited 1 time in total.
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Joined: March 19th, 2010, 4:00 pm

May 4th, 2012, 7:03 am #3

This is another little thing i did a while back. I had an extra barrel so no disassembly was required for this demo.

My B51 likes the CM and Baracudas but my 2240 gets finicky at all but the Baracudas past 15yrds. I couldn't for the life of me figure out why i couldn't get sighted in as quickly when it came to certain pellets. One day i disassembled my gun with a pell still in the barrel and this is what i found about pellet choices.

<img alt="PelletChoices.jpg" src="http://www.network54.com/Realm/stroage/ ... hoices.jpg">

You can easily see the depth of each pellet when loaded in the barrel. The Silver Bear (below) is less than half way past the port hole. This allows air pressure to get around the head of the pellet before it moves forward and the skirt seals the barrel. The remaining air then has to propel the pellet while air is sealed between the head and skirt. My knowledge of physics tells me that this pocket of pressure creats an ill effect on the pellet upon exiting the barrel. 

<img alt="Silver_Bear.jpg" src="http://www.network54.com/Realm/stroage/ ... pg">Silver Bear

The Silver Arrow and Crow Mag below insert to about the same point and except for fps have pretty much the same performance in my 2240 within 15yrds. After that the CM holds more true. Except for the weight 17.13g and 18.21, respectively, i think they are about even. 

<img alt="Silver_Arrow.jpg" src="http://www.network54.com/Realm/stroage/Silver_Arrow.jpg"> Silver Arrow

<img alt="Crow_Mag.jpg" src="http://www.network54.com/Realm/stroage/ ... .jpg">Crow Mag 

The Baracuda has been my pellet of choice and now you and i both know why. When the transfer port is in place there's nothing getting pressure but the bottom of the pellet. At 21g it's really not a CO2 pell. Glad we don't have that problem. 

<img alt="Barracuda.jpg" src="http://www.network54.com/Realm/stroage/Barracuda.jpg"> Baracuda

The depth at which the pellet sits is directly related to the way the inner skirt is designed. CPHP having flat bottoms set deeper in the barrel which is why you get good accuracy and consistency. Instead of extending your probe try changing to a flatter bottom pellet. I don't think the light weight CPHP perform as well at higher fps especially with shorter barrels.


www.PowerMax-HiPAC.com
With my 2240 fully stock bolt I have loaded Jsb pellets on to my 2240 and if you tilt the gun and look in side you will see that they clearly go just past the breech air port for Full air resriction clearance. I too shoot the crosman 22 hollow points and they block just a little bit less than 1/2 the breech aiport, if you tilt the pistol you can clearly see for your self!!!
Daniel
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Joined: February 10th, 2010, 3:02 am

May 5th, 2012, 2:17 am #4

which is why i did the post. I'm sure it has alot to due with causing differences in accuracy.

www.PowerMax-HiPAC.com
Rodemts' Rapture
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Joined: April 18th, 2012, 7:41 pm

May 5th, 2012, 3:03 am #5

I noticed that my 22XX had better accuracy after I extended the probe. It never dawned on me that this would be why. But it does make perfect sense. If the pellet skirt is not sealing in the barrel it would mean that MV would vary, and possibly the pellet would get full effect of the rifling? Now you have me interested, I will have start looking at this.
Thanks
Roger
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Joined: February 10th, 2010, 3:02 am

December 31st, 2016, 2:31 am #6

This is another little thing i did a while back. I had an extra barrel so no disassembly was required for this demo.

My B51 likes the CM and Baracudas but my 2240 gets finicky at all but the Baracudas past 15yrds. I couldn't for the life of me figure out why i couldn't get sighted in as quickly when it came to certain pellets. One day i disassembled my gun with a pell still in the barrel and this is what i found about pellet choices.

<img alt="PelletChoices.jpg" src="http://www.network54.com/Realm/stroage/ ... hoices.jpg">

You can easily see the depth of each pellet when loaded in the barrel. The Silver Bear (below) is less than half way past the port hole. This allows air pressure to get around the head of the pellet before it moves forward and the skirt seals the barrel. The remaining air then has to propel the pellet while air is sealed between the head and skirt. My knowledge of physics tells me that this pocket of pressure creats an ill effect on the pellet upon exiting the barrel. 

<img alt="Silver_Bear.jpg" src="http://www.network54.com/Realm/stroage/ ... pg">Silver Bear

The Silver Arrow and Crow Mag below insert to about the same point and except for fps have pretty much the same performance in my 2240 within 15yrds. After that the CM holds more true. Except for the weight 17.13g and 18.21, respectively, i think they are about even. 

<img alt="Silver_Arrow.jpg" src="http://www.network54.com/Realm/stroage/Silver_Arrow.jpg"> Silver Arrow

<img alt="Crow_Mag.jpg" src="http://www.network54.com/Realm/stroage/ ... .jpg">Crow Mag 

The Baracuda has been my pellet of choice and now you and i both know why. When the transfer port is in place there's nothing getting pressure but the bottom of the pellet. At 21g it's really not a CO2 pell. Glad we don't have that problem. 

<img alt="Barracuda.jpg" src="http://www.network54.com/Realm/stroage/Barracuda.jpg"> Baracuda

The depth at which the pellet sits is directly related to the way the inner skirt is designed. CPHP having flat bottoms set deeper in the barrel which is why you get good accuracy and consistency. Instead of extending your probe try changing to a flatter bottom pellet. I don't think the light weight CPHP perform as well at higher fps especially with shorter barrels.


www.PowerMax-HiPAC.com
Here's an old post for the new guys. nt
Rodemts' Rapture
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Joined: July 28th, 2015, 12:25 am

February 10th, 2017, 5:46 pm #7

and will the proformance matter whether my gun is stock or modded?
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Joined: February 10th, 2010, 3:02 am

February 10th, 2017, 7:51 pm #8

You got lucky if you got one. I may have them back in the Fall or Summer. The fps will go up no matter whether your gun is modded or not, HPA or CO2. I've never used parts other than my own but omparing the V-Probe to the Hollow, the V has no restriction in airflow. The Hollow has a channel that the HPA/CO2 has to angle through. Less resistance means better/faster airflow. I already did the math, lol.

I read a post on the GoTchA about what i'd already known. The V out-performed the Extended and Hollow. If memory serves correctly it stated around 22fps increase.
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