GTA
All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: 454 Big Block Chevy on November 02, 2014, 05:43:36 PM
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ok, i know there is a lot of information on this subject. i know matching your rate of twist to your projectile is a way of optimizing accuracy. Here is what i know... Faster is faster, slower is slower. you need a faster rate of twist for a longer projectile to stabilize. My AirForce condor has a 24" 25 caliber barrel. It has six-groove, 1:17.71" RH Twist. It IS a choked barrel. I have the 25.4 grain JSB pellets, and the 31.02 grain Baracuda pellets. how can i use this information, to improve my shooting? not necessarily from a FPE standpoint, because i have plenty. but from an accuracy standpoint, of maximizing my one hole capability.
Thanks!
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You are correct that a longer and or heavier projectile will need a faster twist to stabilize. What I do not know is what twist is required for a givin pellet weight. I am familiar with PB twist rates and what works but not air rifles. Maybe Bob or another member will have that info.
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id be interested to hear what bob says about that too.
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Customers of mine with your gun/barrel combination have great accuracy with all of my slugs - 31, 37 & 45 grain Spitzers.
Your twist rate is fast for pellets - the twist rate I optimized for my .250" 45gr Spitzers is a 1:22" twist (for solids not HP's as the HP's increase the bullet length).
JSB's would probably be fine in an even slower twist rate than a 1:22".
Diabo pellets aren't affected adversely by too fast of a twist like slugs are.
You could probably shoot a 50gr slug out of your barrel depending on bullet length/shape.
My 1:22" is shooting Kings into a 1/2" ragged hole @ 50 yards when driven at an average velocity of 952 fps...that's for *twenty* shot groups on pellets pulled straight from the tin!
For your twist rate you may want to try some Spitzers...
PM me your address and I'll send you a few of each weight to sample.
Mike
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there ya go :)
youre gonna dig em :)
mikes slugs ROCK!!!!!!!!!
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i'm really looking at shooting the 31 or 37 S/HP. It would be beautiful!!! I am looking for something i can get impact FPE of 50+ at 100 yds. that will let me very humanely take a coyote with a body shot out to 100 yds. my condor with the top hat and heavy hammer and long barrel could push these real fast!!! until i get accuracy problems of course.
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i'm a dreamer..... yes i know this.