s400 pressure

[ellmud 0]

What pressurew should i charge the s400 up to??

at the minute i put in about 200psi, is that enough???

 

ta

[andyfr1968 772]

Around 200 bar should not be too far off. My 410 runs best with 190, gives me around shots (.22).

 

Don't be temted to over-fill it, you'll ruin it. Start a little low, say 170ish, then go from there. What works best for one gun may not suit another.

 

Cheers.

 

PS. Don't rely too much on the built in guage, they can be very inaccurate. Mine reads around 20 bar high. Have yours checked.

[maty j 6]

200 psi Is way too low but 200 bar is about right. Mine runs bets at 180 bar and the on gun gauge reads 20 bar high too..

[farmboy99 1]

from what i gather 190bar is the max to put in them

[ellmud 0]

Cheers for the help,

will make sure i stick to 190ish

Elliott

[SouthernHunter 4]

Hmm. There is a hell of alot of shooter input on the correct fill pressure in an s400. The optimum is 165. Why?

 

The rifle is unregulated and so therfore has a very noticable "Power Curve" It reaches its sweet spot, ie: the part of ther fill where you will get 50-60 consistent shots from 160 down to 120. If you fill to 190, you will find that your zero point will rise as it approaches the sweey spot. Put simply:

 

You fill the rifle to 190

You Zero the rifle at 35 yds

As the pressures gets to 160 (ish), the power will increase by 20-30fps and you may wel see the pellet striking upto half an inch higher at 30-35 yds-which could result in a miss or wounded quarry.

 

Happy hunting all

[ellmud 0]

Hmm. There is a hell of alot of shooter input on the correct fill pressure in an s400. The optimum is 165. Why?

 

The rifle is unregulated and so therfore has a very noticable "Power Curve" It reaches its sweet spot, ie: the part of ther fill where you will get 50-60 consistent shots from 160 down to 120. If you fill to 190, you will find that your zero point will rise as it approaches the sweey spot. Put simply:

 

You fill the rifle to 190

You Zero the rifle at 35 yds

As the pressures gets to 160 (ish), the power will increase by 20-30fps and you may wel see the pellet striking upto half an inch higher at 30-35 yds-which could result in a miss or wounded quarry.

 

Happy hunting all

 

AH!

that explains a few things!

i just bought a new scope as each time i set the scope after a days shooting it'd be out, i'd reconfigure it

then pump up the rifle & it'd be out again...........thought it was cos of a cheap scope!!!

 

Cheers

[andyfr1968 772]

Thanks, SH.

 

I've lowered the fill pressure on mine to what you said and while I'm getting around 20ish less shots, it does shoot better.

 

I'm fairly new to PCP's!

 

Good advice!

 

Cheers.

[sibaldib 6]

Have a look on the Air Arms Owners forum. The consensus of opinion is that you should fill to 175 bar and that should give you a good 50 shots in .22,without much drop off.

 

Cheers

 

Sib