Hi Guys. I need the exact BC of JSB .357 81 grain and BC

May 15 2017 at 8:11 AM
James Dingle  (Login JamesDingle777)

of .257's weighing 87 grains. The RAW I'm considering is regulated at 130FTLBS with these (I've read 77-81 grain JSB's) for about 16 shots. You get 100 for roughly $18.00 and that's PLENTY for Hunting. The .257's cost $25.00 for 100 count. Shipping is not reflected here.
I'm debating on a dedicated RAW in something between .25 to .257 (if they'll make one or a TJ liner will work) to a .30 or .357. The .357 spitting 81 grain Diabolos is capable of 130FTLBS regulated for 16 shots from Factory. That's a normal 480cc bottle. I'd opt for a 500cc carbon fiber 4500psi bottle, custom regulator and valve. As it is from Factory, it CAN do 160FTLBS with 81 grainers non regulated; but I want accuracy over power. I am looking for .22LR comparison in ballistics for groundhogs and coyotes.
Seems like many prefer the Air Force rifles modified for power and long range; but I'd have to go with a RAW over an Air Force. I've even considered a Texan in .308 but I doubt it can do 5 shot under 1" c-t-c like I see some RAW's doing at this power level.
There's also The FX Crown coming out and I'm VERY interested in what calibers and liners will be available. Size and material of bottles (fill pressures) adjustability of factory and custom parts (as we KNOW custom parts will be coming for The Crown.)
Right now, I'm just punching in numbers to Chair Gun and would like exact figures to compare the RAW .357 at 130FTLBS to an unknown platform in .257 which seem to be an average of 87 grains but are cast bullets, not Diabolo pellets. I'd like my own mold to cast bullets with super pure soft lead for complete energy transfer and massive mushrooming if I go this route. I've found that most all JSB's are made of quality soft lead, are super accurate and do mushroom reliably.
With 20MOA droop built in, special mounts with more, a good SWFA mil-quad scope, bi-pod, and either of these 2 main choices between .357 or .257 I foresee NO problem taking out groundhogs or coyotes at 200+ yards.
I can whack and kill Groundhogs at 150 yards with 18.1 JSB's doing 861fps out of my Evanix Rainstorm and only hitting with about a retained 8-10FTLBS, so either of these 2 choices will be a piece of cake. I may even settle for another .25 Raw pushing 25.43 Kings at 920-940fps, guessing 50FTLBS at muzzle, or a .30 weighing 44 some grains. If you have the exact BC of ALL these new pellets, from new heavy .22's to heavy .357 Diabolos, to cast .257's, I'd GREATLY appreciate it.
Also, I'm pretty dead set on this future purchase to be a RAW, Crown, maybe a Talon Tunes fully worked Condor. I am also reading that some are having amazing results with the Evanix REX, Rainstorm II, AF Texan, Hatsan's. I'm looking for ONE high quality PCP and would most likely sell or split my other 6 Air Guns between my 13 year old Boy, my new 3 week old Boy, or my 6 year old Girl who already wants to hunt; but I've told her she has to grow in size and be at least 10 to go with me.
Of the 6 I've kept, they are all amazing. There's probably 10 others I wish I'd kept, but these are great ones for what they are. I'm very interested in The Crown's versatility but I will never be a Beta tester when it comes to Air Guns. I wait for the Guys with the money to play with them and give accurate reports. A RAW is a no brainer. Only thing is the .357 will NEVER be interchangeable, so if I go with it, it's definitely a dedicated caliber. Any other RAW can be configured from probably .177 to .30 or at least a .25. We'll have to see how versatile the Crown is and what they offer from factory.
So again, to clarify. I'm looking for info or a link to the BC of all available or mentioned calibers. Thank you and all opinions are welcome. I don't mind advice, opinions, related but OT subjects.
My true desire here is to have a air powered high quality accurate rifle that can do anything a .22LR can as well or better. If we don't have that now (which it seems to me we do,) then we're sure to see such come about within the next 3-5 years, 10 at most. I believe the true Golden Age is coming in now. More advancements, lower prices on rifles and compressors. It's about to take off and go mainstream popular like in The UK. Just MHO as I see it.
Thank you for reading, considering, answering and or providing requested info.

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