Can slugs be designed to have more subsonic effect

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Well put Willie. We all benefit from sharing our experience with each other.

I like Long_Shots terminology of "Affect". We can throw around terms like hydrostatic shock and so on, but until we develop a way to measure them it's just a guessing game.

We have been measuring affect by using a consistent media and then comparing results on cadavers to make sure the media is an accurate representation of real world results. 

We do it for ourselves and hope we can share with others to farther advance our sport. These forums allow us to advance at an exponential rate so we all win!! 
 
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The air is clear here. I like extreme thinking. Nothing new happens without it.

Your primary reason for posting this is collaboration in knowledge and ideas. That's what it's all about.

Your statement - "Yes absolutely I can get far left field and I tend to think outside the box, my employers have have both threatened to fire me and has promoted me because of my knack of stepping out of that very blind restrictive box more than once. "

That's too funny to me because my wife has said for decades that you can't even see the box from where I live......

Airgun slug shooting is still in an early state of development. Very few "real" slug guns powerful enough out there. Most of us make Mod's. to our pellet shooters to create a slug gun powerful enough to get good results with slugs.

These are the kind of things that should be looked at from a new non PB influenced results type of tests.
 
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If I may make a suggestion, Everyone is trying to do bullet expansion, instead do the reverse and work on wound expansion. Use a fluted tip bullet instead of a hollow point, take advantage of the hydraulics (Blood Filled Tissue) that are in the lungs and heart.

Its true that the fluted bullet design in the firearm world is mostly used for self defense close quarters shooting Inceptor Preferred Defense Bullets ARX these are some good examples of what I am talking about, if you have seen videos about that white buffalo Umarex is calling the Hammer then you most likely saw something about these bullets, which by the way are no longer available for air rifles although they are listed at some black powder sites for the muzzle loaders with a speedbelt gas check, 

Consider this, According to the reloading sites to get the RPM of a bullet the formula is 

MV x (12/twist rate in inches) x 60 = Bullet RPM

MV is Muzzle Velocity so for a Texan .308 at 1000fps and 1:14 twist rate --- 1000*(12/14)*60= 51,428 rpm

I will admit that I can see some potential issues with this design, the formost being that the 1:14 twist rate may actually be to slow to power a bullet of this kind of design although as you can see from the above link those bullets are actually pretty light compared to what a lead bullet would be and therefor a lead bullets mass may help it keep its momentum 









Using the formula found online I made a quick Excel Calculator to get a bullets RPM 

download.png
View attachment 1573882378_7207636645dcf8a0ada8122.84940985_Bullet RPM Calc.xlsx


 
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Work on wound expansion. ??? Interesting bullet designs.

I think I've always been trying to make as big a wound canal possible. 

That RPM info. shows your Texan having 51,428 rpm. So divided by 60 sec. gives just over 857 revolutions per second. 

That seems like it's spinning faster than I'd of guessed. That math shows my .25 cal. slug spinning at 518 revolutions per second. 

Wonder just how long it wound take that .308 slug to pass through a deer's vitals as it slows to a stop. 

Kinetic45 - "Designed to open up at airgun velocities and dump it's energy in the game (hogs and deer size mostly)." 

Nice design for a large cal. slug. What velocity does that .35 cal. slug need at POI to function? 
 
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Work on wound expansion. ??? Interesting bullet designs.

I think I've always been trying to make as big a wound canal possible. 

That RPM info. shows your Texan having 51,428 rpm. So divided by 60 sec. gives just over 857 revolutions per second. 

That seems like it's spinning faster than I'd of guessed. That math shows my .25 cal. slug spinning at 518 revolutions per second. 

Wonder just how long it wound take that .308 slug to pass through a deer's vitals as it slows to a stop. 

Kinetic45 - "Designed to open up at airgun velocities and dump it's energy in the game (hogs and deer size mostly)." 

Nice design for a large cal. slug. What velocity does that .35 cal. slug need at POI to function?
Click to expand...

Yeah, I worded that wrong. Sorry what I was getting at was enhancing the Hydrodamatics of the bullet so that in the boilerplate shot it will utilize the fluid in heart and lungs. 

I wonder the same thing as far as the rpm of the .308 these probably would work in the .45 but I don't know if the mass and inertia of a .308 is enough to power it's designed function
 
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My wife dragged me down to the craft store today. I noticed they had 10 pound blocks of clay for 10 bucks. Hmmmmm. Maybe a good opportunity to show the difference between a well performing HP and a modified HP.
1573948110_1399012755dd08aced05488.10123734_20191116_145312.jpg
1573948131_13781708825dd08ae3927c30.31427851_20191116_145322.jpg
Above is the standard HP slug at 40 yards.
1573948368_6974625475dd08bd08005c3.84629712_20191116_151347.jpg
1573948514_14182947845dd08c62ea8981.77068352_20191116_151335.jpg
And the modified. Notice the modified opened a 2" channel within the first inch of penetration and it kept getting larger after that. The standard HP took 2" of penetration to peek a 2" channel. 

Also notice the size of the 3 different channels taking off for maximum tissue damage and energy dump compared to the single one.
 
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