woe sport

[fry 209]

hi all last christmas i swapped a 400 for a pro sport thought i would treat it to a v-mach kit ! have been well happy had it set at 11.2 with daystate 7.9 grain pellets, any way chronoed it today as on here i have read the power creeps up, well its down to 9.6 with daystate 7.9 grain an 10.6 with aa fields 8.4 grain gutted . i stripped it down it all looks fine cleaned it up regreased it an put another washer in it to raise the power ! chronoed it again no change put the old breach seals in no change. any one got a clue i am well pissed off the seal looks fine. help any one please.

Edited September 5, 2012 by fry

[pianoman 3,589]

Hi mate.

If nothing else, send my pal AndyFR1968 a PM about this. He's been a bloody wizard with servicing and tuning my spring rifles, so, it's a good bet he might know what's happening inside your Prosport...or not!

 

 

Hope this turns out well for you and your rifle.

 

Regards.

 

Simon.

[Skot Ruthless Teale 1,701]

erm. doodgy chrono.. wrong pellet weight in chrono settings??

 

other than that if it all looks ok then god knows. 9ftlb is still effective tho.. dont get too worried about the numbers mate it will screw with your head, like mine has been since i started worrying too much about all the little things. go out, shoot some stuff and have fun and stop worrying about numbers is my advice

[fry 209]

yeah well i changed the batteries in it and it was the same detinately not put in wrong weights. i will try my 410 through it see if thats reads under as well. i have been thinking about it and if there is a fault it must be losing past the piston seal the spring is new. all said and done i only have a combro. i will ring blackpool rifles and ask them what they reckon.

[Skot Ruthless Teale 1,701]

erm you said air arms are 10, sumat....... are the otherones really loose, and losing air in the barrel/breach??

try some really fat pellets and see what happens?

 

i dont even know what im talking about lol ah well.

[fry 209]

the daystate pellets are lighter with a stiffer skirt even so they were reading 11.2 last time i checked

[Skot Ruthless Teale 1,701]

dont know then mate. sorry.

 

hope you get it sorted

[fry 209]

phoned support at blackpool air rifles he said power can go down or up when they bed in! springs aint a totally predictable item i am goin to strip it again and shove another washer in.

[Skot Ruthless Teale 1,701]

if that fails try get a new spring. might be worth a shot. maybe your next spring will go up instead of down lol

[fry 209]

yeah true enough

[Skot Ruthless Teale 1,701]

When i got my ,177 97kt he chronoed it 11.7 and i thought id best keep my eye on it. 4000 pellets or so through it and it was doing 11.2

[thursodog 353]

Might well be the spring if all else is well.

Is there any free play on the cocking arm when you disengage from the stock prior to cocking?

Reads like it may have compressed somewhat.

 

CW.

[davyt63 1,845]

hi fry

what grease are you using?

i wouldn't worry to much about the 10.6 with AA 8.4gr ,it will bed in and after a few tins it will be cock on!

i run my TX at 10.2 and its deadly accurate,so just let it settle and every thing will be OK

[fry 209]

i used the grease that came with the v-mach kit i aint too bothered over the ten with the aa fields but under with the 7.9 daystates sort of grates a bit. any way my missis is off to corfu with all the kids to aqua land for ten days so i am going to service me 410 with the dvd you sent me when they are gone. will leave a review after i am done..

[fry 209]

tried to put a third preload washer in an it would not cock! phoned mr pope and he said shorten the plastic spring guides which i did but to no avail. it must be a duff spring me chrono is right my 410 still reads 11.2. he has told me to send him the spring and he will send a replacement. cant say fairer than that! my spring measured 208 mm an one he had there was 215mm. o well back to the recoiless world of pcp s for a week. have to say steve pope is a decent fella to deal with.