Me and another member were having a discussion on the potential power one may achieve out of this platform. Can we see 300fpe? 
FX impact .35 Potential?
- Thread starter airkrazy
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well for .357 with slugs you will need 300fpe , most good slugs range from 120 to 207 gr , unless its used for pellets , also was the magizine width opened up
212 gr .BC .235 length .875
127 gr
212 gr .BC .235 length .875
127 gr
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I believe they can reach 180 bar but I prefer to keep pressure at 150 max for less stress and vibration.
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The impact was never designed for high fpe. If high fpe is your goal. You may want to get a gun that is designed for it like the texan. The impact 35 cal is advertised as 150ft lb. So with mod it probably will get 200lb. But it will not get anywhere near the 300 ft lb. Next people will be asking for the impact 50 cal 900-1000 ft lb lmao.
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So 150 and 200 isn't high fpe? The platform is already there for modifications to tinker and get a higher fpe with heavy slug going 1kfps or better. We said the same exact thing with the 30cal now they are shooting close to 150fpe with the PP. So why wouldn't a 35cal achieve close to 300fpe with mods? Makes no sense! Not hard when 150fpe is baseline
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The impact 35 is advertised as 150lb. That seems a lot but for a 35 cal airgun that is on the low to mid side. There are 35 cal airgun that is in the 300 ft lb stock with no mods. I find it hard to believe you can double the power with the pp and mod. I have the impact 25 cal. Stock without the pp I can push 65 ft lb. With the pp I can push up to 75 ft lb maximum. That isnt a increase in double the power. I can see the 35 cal impact maybe making 200 ft lb max with many mods.
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When FX made their "35 Caliber Introduction Post" on here,Â
I think I actually commented that it was really cool, but that I was going to hold out for their .50 cal model!
Sam -
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I myself sided with more like 200fpe maybe lower 200's. Like one comment says 150 for .357 is on the low end if looking to do larger game. I believe the platform would be highly stressed pushing 300fpe. Guns like the Slayer, Texan and some new ones are made to take that kind of power from the start. I like the Impact and think it's a awesome piece, but as I tried to explain to my friend 300fpe is not nothing to sneeze at.
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well for .357 with slugs you will need 300fpe , most good slugs range from 120 to 207 gr , unless its used for pellets , also was the magizine width opened up
212 gr .BC .235 length .875
127 gr
My biggest issue. The Impact mag will only take stubby pellets and slugs. No way those will load. Heck the .30 is too shallow for that caliber and the .35 is the same receiver so there is no more room.Â
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140gn NSA slugs should fit a properly made single or double shot tray. It would take 981 fps to reach 300 fpe with them. I don't see that happening.
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I have 4 impacts and 3 are the .357, most you are going to see is 180lbs and thats with doing alot of .modifications to it... to get it pass 160lbs hat would be setting a stock .357 to max ...if you want to get the Huma 135-200 bar reg to max and use 110gn slugs 180 is it......but out of 18 round clip you are only getting about 10 shots....
I mostly use the .357 platform to down size to a .22 or 25 cal.....iwith the heavier weight it seems to help open the .22/.25/.30 valve longer to push heavier slugs faster..
On standard setup 700mm 25cal on 140bars pushing 40gn slugs to 1020fps. But on my 22cal , I have to set the reg to 170bars to get 40gn to only 1000fps....using the 357 platform.. .
But I'm sure on the new power box you can maybe gain 20-30fps.
Hope this sheds some light on thinking 300lbs .357 is most UNLIKELY.Â
I mostly use the .357 platform to down size to a .22 or 25 cal.....iwith the heavier weight it seems to help open the .22/.25/.30 valve longer to push heavier slugs faster..
On standard setup 700mm 25cal on 140bars pushing 40gn slugs to 1020fps. But on my 22cal , I have to set the reg to 170bars to get 40gn to only 1000fps....using the 357 platform.. .
But I'm sure on the new power box you can maybe gain 20-30fps.
Hope this sheds some light on thinking 300lbs .357 is most UNLIKELY.Â
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To get a Benjamin Bulldog to 300fpe it takes 3000psi from a full 340cc airtube. That's with a 9mm valve throat and 8mm ports plus a spring so heavy it can cause the factory lever to fatigue and fail over time. The impact can't achieve the hammer weight (Bulldog hammer is 108g) or spring it would take even if you got the porting to those levels. I do see possibly getting 200 but that's still a stretch.Â
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I agree with some of the guys that said the FX .35 was not a high power FPE gun.
It's more accurate than most of the guns but the power falls short compared to the Texan or Hatsan.
But, I'd rather be more accurate and hit 18 shots with 150lb slugs than an un-accurate gun doing 300-350lb and with only a 3-5Â shots or a single load.
The base powerline is not the 150-160lb range, it's more like 135-140lb. What FX tells you that it's capable of 45 shots in .35 but fails to tell you at what power level.
Then it tells you that the max on .35 is 150lb on MKII which you automatic think it's 45 shots at 150 lbs., which is very misleading.
That 45 shot is 81gn at 880fps which is about 138lb gun. The 150lb gun is going to be about 16 shots or less. Keep in mind that you are not investing a lot of aftermarket parts.
Maybe a few 100$ more to fine tune the gun, get the gun more accurate not more powerful.
If you want to drop 600-900$ for heavy liner, hammer weights, power box, slug kits, external plenum, dual tanks, high reg, etc. you might get maybe another 30-40lbs more but not worth the $ or shot count and then expect to shorten your life on your gun from pushing the gun to the extreme max.
Honestly, I don't think a lot of people has ever fired an air gun pass 180FPE. If you don't have a good platform or a heavy air gun, it seems to jump and kick around a lot when you pull that trigger, which makes it not as accurate.
If the impact pass 180FPE, it would not be very accurate unless you somehow strap it to a heavy gun sled but if that's the case, why even have an Impact at all.
The front end is too light.
Sounds like the new M3 with all the power box and 800m are coming out. This might be a good think to push around the 180-200FPE mark, but with what's available now 180FPE is about it.
It's more accurate than most of the guns but the power falls short compared to the Texan or Hatsan.
But, I'd rather be more accurate and hit 18 shots with 150lb slugs than an un-accurate gun doing 300-350lb and with only a 3-5Â shots or a single load.
The base powerline is not the 150-160lb range, it's more like 135-140lb. What FX tells you that it's capable of 45 shots in .35 but fails to tell you at what power level.
Then it tells you that the max on .35 is 150lb on MKII which you automatic think it's 45 shots at 150 lbs., which is very misleading.
That 45 shot is 81gn at 880fps which is about 138lb gun. The 150lb gun is going to be about 16 shots or less. Keep in mind that you are not investing a lot of aftermarket parts.
Maybe a few 100$ more to fine tune the gun, get the gun more accurate not more powerful.
If you want to drop 600-900$ for heavy liner, hammer weights, power box, slug kits, external plenum, dual tanks, high reg, etc. you might get maybe another 30-40lbs more but not worth the $ or shot count and then expect to shorten your life on your gun from pushing the gun to the extreme max.
Honestly, I don't think a lot of people has ever fired an air gun pass 180FPE. If you don't have a good platform or a heavy air gun, it seems to jump and kick around a lot when you pull that trigger, which makes it not as accurate.
If the impact pass 180FPE, it would not be very accurate unless you somehow strap it to a heavy gun sled but if that's the case, why even have an Impact at all.
The front end is too light.
Sounds like the new M3 with all the power box and 800m are coming out. This might be a good think to push around the 180-200FPE mark, but with what's available now 180FPE is about it.
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