Fx Dynamic grouping at 100 yds with Alteros 3.2 gr at 900 fps…70 shot count per fill with 580 bottle… 
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FX Panthera ammo
- Thread starter DaveT1
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you have a dynamic 700 in .25 caliber? I would be interested in your settings of the regulator and the hammer spring when you have such a beautiful performance and at the same time so many shots on 580cc.
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It is a Dynamic 22cal, 700…slugs are Alteros 32 gr…speed is 880 fps…reg presure only at 125 BAR…settings on following pic
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To increase shot count you have to lower reg pressure to only the amount you need to harmonize with the lowest accurate speed of your slug weight…most settings have reg pressures too high…and slug velocities above optimal speeds…resulting in constant loss of air and of accuracy on each shot…
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Most imp setting to increase shot count is your reg pressure…it should be the lowest needed…other two factors are speed and slug weight…they also should be the lowest needed…
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I understand how pcp is set up, I was just wondering about your settings. I saw you wrote 3.2gr so I thought you had .25 dynamic. I currently have a dynamic express 700, but in caliber .25 I did the ATP smooth 3.24g test, i.e. 50 grain, and in my settings, but with a heavier hammer of 13.6 grams, I have the number of shots 60 and I haven't even reached the reg setting yet
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Nice…60 shots is very good…I never got more than 20 shots with my Pantheras…I used to spend more time hearing the compressor noice than enjoying shooting…
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so I have two bottles, the original 480cc and 500cc in the front. I used the saber tactical reduction and super.
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Ok…two bottles in your Dynamic…?…I have only one bottle in my Dynamic 700 cal 22…I replaced the stock 480 in the back with a 580…and kept the Arca rail…I get the 70 shot count with only one bottle…
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Very nice…Impressive set up…!!!…can you fill both bottles with a normal PCP compressor?…or do you need a tank or a special compressor ???
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BC of most hollow pointed, non-smooth slugs is too low…at 100 yards, they need a very calm wind to group tightly…smooth Altaros slugs have a much higher BC…they group tighter at 100 yards even with slight wind…accuracy at 100 yards is strongly affected by the BC of your slugs…
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I agree, but Altaros states bc g1 but the slug type is g7 and in g7 his slugs have 0.128 bc in the Queen .25 60 grain slug
I could be wrong, I just looked that all bullets in ballistics have different bc depending on the shape of the bullet. and for example NSA is also nice bc 0.120 at 55.5 grains. kingpb comes out 0.112 and gmax 0.110 in 53 grains, but I still have to look exactly in which G group they have this. but it can also be calculated if it is measured over two chronos, how much exactly is g1 for each slug manufacturer. it's just important to have one chron on the shot and the other on impact.
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After shooting Alteros 32.5 gr at 880 fts for one week, I came back to my Jav, H&N and ZAN slugs and it is true what they say…you want to throw then all into the trash…
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so I use Zan slugs up to 100m in 41 grains for fun and for hunting but at a speed of 300-305 ms. in the same airgun setting, I also shoot kingpb 49 grain at 288ms at 200m also for fun and hunting. altaros smooth 50 grain up to 300m for accurate shooting. up to 450m I use kingpb 53 grain and NSA 55.5 grain and from 450m I have Altaros Queen 60 grain
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Nice combination…but for paper shooting for accuracy at 100 yards…Altaros is the way to go…group size is significantly smaller and flyers are very rare…
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