Here are my thoughts on the FX Crown and STX Barrel System. I just spent a week in the FX factory putting hundreds of test shots through the Crown and about 20 different barrels, so I think I have some insight
Would they work on something like a Wildcat or Streamline? Or is this only designed for the fully adjustable rifles like the Impact and Crown?"Matt_Dubber"I would only suggest buying the new 25gr pellets if you have a gun capable of shooting them around 850-900fps+. They seemed to be more accurate at higher speeds, but you'll need a VERY powerful rifle to get them that fast. After I'd tuned the Crown & Impact I was testing to shoot them at 930fps, I sent some 18gr JSBs over the chrony and they were shooting at 1080fps.
I shot some of the 25gr JSBs through my 30fpe Wolverine as well, and they were fairly accurate but VERY slow, around 700 fps so pretty much a waste of time.
Yes, would be very interesting to do a comparison of BCs and air consumption. I am mostly excited about the new pellets because .22's are unrestricted in SA, but .25's aren't. Will keep experimenting!"Michael"Air consumption will likely be similar if you want to push the 25g .22 over 900 fps. Need to compare the ballistic coefficient of:
18g .22
25g .22
25g .25
34g .25
If the BC is similar; the .22 Smooth Twist X might benefit the shooter who wants to shoot/hunt long range with the 25g .22 caliber pellets then de-tune their Crown/Impact to punch some paper at closer range with the 15g or 18g .22 caliber.