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37 yard .22cal Prometheus Pile driver shot test+ chrony
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SP
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PostPosted: Sat Jan 20, 2007 6:16 pm    Post subject: 37 yard .22cal Prometheus Pile driver shot test+ chrony Reply with quote

Here are some pics+videos of todays test. I swapped the factory valvestem with Ernie's new custom stem and stem spring. The revised stem has just one notch for just 1 O-ring, which is all needed.

I put only 3 shims to preload the hammer spring. and the cap is turned in 90% in. I could of used 5 shims to preload the hammer for even more power, but wanted to do things step by step.

IMO , to shoot these pellets/projectiles efectively out of Rapids. 760+ fps would be ideal. At this moment my modded Rapid .22 is shooting these out at 825/830FPS which is about 48ftlbs with these 30grainers. Heres a 2 part video of my shot string. (3400 psi fill with 400cc bottle via quick fill setup).

PART 2: (continued shot string, from the same fill )


37 yard ( 12 shot group)




Final opinion:
I think these are the best hunting pellets . The energy that they carry down field is devastating.
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airjunki
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PostPosted: Sat Jan 20, 2007 6:49 pm    Post subject: Reply with quote

Pretty impressive SP! What kind of trajectory do you anticipate? I'm guessing something close to what your 25 is doing? 8)
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Killer-B
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PostPosted: Sat Jan 20, 2007 8:32 pm    Post subject: Reply with quote

Lee,

Nice grouping and good video man.

KB
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220swift
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PostPosted: Sat Jan 20, 2007 9:39 pm    Post subject: Reply with quote

Linstun your gun was just getting to the sweet spot, with that 12 shot string ,825 with those pellet's is SMOKING
Nice Vid.


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GWH craig
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PostPosted: Sat Jan 20, 2007 11:28 pm    Post subject: Reply with quote

they seem pretty good. and that they have decent accuracy.
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SP
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PostPosted: Sun Jan 21, 2007 2:18 am    Post subject: Reply with quote

Thanks guys glad that you guys enjoyed the videos. hey Ernie, im hoping to shoot these closer to 900fps. Will keep you posted. 8)

Airjunki, it would be very nice if they made these in .25 cal.
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BILKO
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PostPosted: Sun Jan 21, 2007 2:27 am    Post subject: Reply with quote

At 37 yards you should of got a one hole grouping.
At least that is what i get when i shoot the 28.4 grain Eun Jins and the Barracuda match (kodiaks)

Personally i am not impress guys , because this is suppose to be a pellets that has a great accuracy and carry more energy downrange.
When you do a 50 yard test and 70 yard test you will see just how accurate they truly are and you will not bother with them again.
A 28.4 grain Eun Jin pellet has outstanding accuracy and also great impact downrange

Good test SP and good video, as usual Smile


Last edited by BILKO on Sun Jan 21, 2007 3:00 am; edited 1 time in total
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SP
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PostPosted: Sun Jan 21, 2007 2:54 am    Post subject: Reply with quote

BILKO wrote:
At 37 yards you should of got a one hole grouping.
At least that is what i get when i shoot the 28.4 grain Eun Jins and the Barracuda match (kodiaks)

Personally i am not impress guys , because this is suppose to be a pellets that has a great accuracy and carry more energy downrange.
When you do a 50 yard test and 70 yard test you will see just how accurate they truly are and you will not bother with them again.

Good test SP and good video, as usual Smile


Bilko,
As for me, I never intended to use these piledrivers as punching paper or FT. But for hunting and pest control only. And getting quarter size group at 40 yards. Well thats good enough for me.

Bilko, glad that you enjoyed my videos, Thank you.

SP
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BILKO
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PostPosted: Sun Jan 21, 2007 3:11 am    Post subject: Reply with quote

I also hunt with my air guns, but i my average shooting range is 60-120 yards and i need all the accuracy and downrange power, i can get.

I guess for hunting at close range , 40 yards they are ok, but put on this post a test with you shooting on paper the kodiaks at the 40 yards and you will truly show the difference, between one pellet and the other.

It is like the crow magnums, they are good at maximum 35 yards , because over that the spread is a little too big.

Well at least that is what i got from my test and i am sticking with the kodiaks and Eun Jins.

To me accuracy is everything ,because with out it, who cares about downrange

p.s. Love your camo
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Lowell



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PostPosted: Sun Jan 21, 2007 6:35 am    Post subject: Reply with quote

Agreed. At 37 yards, you don't really get much advantage with the Piledrivers. Shooting Eun Jins and Kodiaks will produce ragged one hole groups at that distance and kill anything that could be humanely hunted with a .22 airgun with proper shot placement. A through and through head shot will be lethal regardless of pellet...
The expansion on the PDs is very good though, and would definitely be a factor at longer ranges if there isn't enough accuracy to hit the ideal kill zone.
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