30FT/ILB .177

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Spray1Mark

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Jun 21, 2018
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TERRIBLE LOL!, United Kingdom
With the new Wolverine R HP in .177 producing 30FT with the 16g JSB Beast at 900FPS, I was just wondering has anyone acheived anything near this with the Crown?

Presumably using the reg at 140-150 bar, hammer spring maxxed out and transfer port at the 25/30 setting the only limiting factor is the .177 barrel length of the Crown.

I was thinking of ordering the Wolverine HP but thought to myself you must be able to get pretty close with the Crown?

Anyone tried this?
 
I am way out on a limb here, but I believe have heard FX say you won't get more power on a crown in .22 or .177 by turning the transfer port to .25/.30. This makes me think the port on the barrel is a limiting factor and would need to be opened up to achieve these power levels. I did briefly try turning the transfer port to .25 on my .22 crown and while I couldn't get the Chrono to work in the fading light, there was no major poi shift at 100 yards which makes me think it works as FX claims.
 
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I haven't heard of any Crowns having the ability to shoot at those power levels.
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Do you know anyone who's tried? You probably wouldn't think a Royale could make 50+FPE in .22 either.



Royale/Crown/streamline .25 starting power 45fpe, many people have got 60fpe with just adjustments. (streamline might need heavier hammer weight)

Royale .22 starting power around 30fpe, got 45fpe with the stock 18.5 inch barrel with just adjustments. 53 with 24 inch barrel.

Seeing as the Crown has the .30 option (bigger valve/seat than Royale) this is why I think it's possible, if starting power is around 20fpe I see no reason a person couldn't get close to or at 30fpe by raising reg pressure and opening TP on barrel inlet a bit.


 
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I am way out on a limb here, but I believe have heard FX say you won't get more power on a crown in .22 or .177 by turning the transfer port to .25/.30. This makes me think the port on the barrel is a limiting factor and would need to be opened up to achieve these power levels. I did briefly try turning the transfer port to .25 on my .22 crown and while I couldn't get the Chrono to work in the fading light, there was no major poi shift at 100 yards which makes me think it works as FX claims.
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Yeah that makes sense to me, it's only going to flow as much as its smallest port. 
 
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A .177 at 30 FP will get fewer shots per charge than a .22 at 30 FP, which will get fewer shots per charge than a .25 at 30 FP.
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I don't see how that is relevant with the Crown, you are setting the air pressure and volume yourself, so 90 shots at a volume and pressure is 90 shots.

The effect on the velocity/energy of the .25/22 will of course be greater for the same amount of air at a given pressure and volume due to the larger surface area it is acting upon.
 
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You might be right about the FX abilities, Spray. Not good with puzzles, I popped-off with a general statement applicable to PCPs in general, and didn't mean to suggest your goal not possible. My bad.

Though mechanically-minded, I lose interest as puzzles become complicated. Matter of fact, as a kid every time someone broke out a Jig-Saw puzzle or Rubic's cube, I grabbed my BB gun and went shooting! 
 
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No of course, I wasn't trying to be rude, I totally get your point that if you wanted the muzzle energy to be the determining factor that you would indeed require more air for the .177 and therefore get less shots.

TBH I am not sure the diffeence between the standard Crown barrel at 850 and going to a 24" to get 900 makes all that much difference even at 100 yards, maybe half an inch to an inch less drop at tops, not sure on the drift but I suspect it isnt all that much worse at 850 VS 900 either?

At first the 30FT from the Wolverine shocked me! and appealed to me as well, however I wasn't taking into account that the Wolverine runs a set up very similar to what the suggested set up for a Crown is in .25, reg/hammer/transfer port etc. So I thought why not just try the .177 barrel on but leave the settings at .25 and it worked, it isn't far off what the Wolverine will do, saved my self a heap on a new Wolverine as well!
 
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No of course, I wasn't trying to be rude, I totally get your point that if you wanted the muzzle energy to be the determining factor that you would indeed require more air for the .177 and therefore get less shots.

TBH I am not sure the diffeence between the standard Crown barrel at 850 and going to a 24" to get 900 makes all that much difference even at 100 yards, maybe half an inch to an inch less drop at tops, not sure on the drift but I suspect it isnt all that much worse at 850 VS 900 either?

At first the 30FT from the Wolverine shocked me! and appealed to me as well, however I wasn't taking into account that the Wolverine runs a set up very similar to what the suggested set up for a Crown is in .25, reg/hammer/transfer port etc. So I thought why not just try the .177 barrel on but leave the settings at .25 and it worked, it isn't far off what the Wolverine will do, saved my self a heap on a new Wolverine as well!
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Did you ever make it to 30ftb with the .177 in the crown @spray1mark?
 
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After owning top air rifles in /177, .22, .25 and .30 cal, my .177 cal rifles are still the most accuracte IMO. Now that we have 16 grain pellets, I would like to see additional manufacturers produce rifles in the 30 fpe region. My 20 FPE TM1000 shooting 13.3 gr pellets seems to hit pretty hard and is super accurate. I have not seen much reported on FX rifles in that caliber and am wondering why. I feel that the .177 cal isn't getting the appreciation it deserves. Sure it's not a hunting caliber, but for us paper punchers, it would be nice to reach further out with them.
 
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I have one shooting NSA slugs at 920 and the Beasts at 945 on the same tune👊🏻 This thing is my go to gun. It is incredibly accurate, 47 shots per fill and a very well balanced bullpup platform.

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I know the OP was not talking about EDguns, but this info is relevant... IMO. Check out the range card. I love this thing.



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