September 10, 2007 at 4:54 am #309
I have had my gun just couple of weeks now (.22 standard Talon) and haven’t have too much time to fine tune power adjustments nor experimenting with different pellets.
My main goal is to find decent ~15 grain pellet and shoot with 240-260 m/s or about 20-25 fpe power level. This seems to give decent trajactory on the ranges I am looking for and hopefully save some air (based on knowledge – not experience). I would like to have 50+ shots from one fill (190-200 bar). +/- 5 mm vertical POI change is acceptable during string. Range is 35m mostly but sometimes upto 70 meters. On very rare cases 100m.
Since many have propably performed zillions of test already would someone mind sharing experience and some tips for pellet choice and power level tweaking. Especially how many shots I can expect with that power and acceptable POI change.
Looks like my Tophat gap is now 2mm with factory settings. Power wheel seems to respond quite nicely. With power 0 setting I shot 110+ shots with quite a little variation. Power was enaugh for low range shooting (200->140 bar).
ps. Is there ANY decent or simple way to approximately determine fpe/velocity during tweaking without chrono or am I just gonna waste my time?
Thanks.September 10, 2007 at 5:05 am #24138yParticipant
I’d suggest the following which all meet what your looking for I think, in order of (my) preference.
JSB Diabolo Exact Jumbo – 15.8gr
JSB Diabolo Exact Jumbo Express – 14.3gr
Crosman Premier (CP) Domes – 14.3gr
The JSB’s are most peoples top pick in that weight range, either are good. I use CP’s because they are a bit cheaper.
If you dont have a Chrony you can use chairgun to estimate velocity based on point of aim and point of impact at known distances.September 10, 2007 at 7:26 am #24141
Yep. I use and have used Chairgun a lot already. Very nice proggy.
JSB Exact Jumbo is one of the pellets I have already. Good to know it’s ok pick. Haven’t have time to test it yet though.
btw, Can I use values of “JSB Exact” from Chairgun database as Exact Jumbo or does the values differ?September 10, 2007 at 7:27 am #24142yParticipant
The weight difference might affect the results.September 10, 2007 at 9:06 am #24145quote Yellow Ninja:
That is easy to modify but I am just wondering what is the BC for JSB Exact Jumbo ?September 12, 2007 at 10:38 pm #24307benzinParticipantquote Yellow Ninja:
Ibe been dying to know how much my condor is putting out at top power, but dont have a chrony, how accurate is speed measuring with this method?September 12, 2007 at 11:46 pm #24310stevectParticipant
What yellow Ninja said but to tell you the truth my .22 Talon loves the Kodiaks. They come in at a bit higher weight than your preference but oh boy my Talon loves them. It’s second preference is .22 CPs.
Speaking of the Kodiaks the .25 Condor I have loves them too…
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