Bisley Magnums

[villaman 9,982]

Have you put them through chronograph yet ,it would be interesting to see fps on them

 

On the JSB heavies 10.3 gr they are running @ 715 fps

[big napper 3,635]

I dont know the fps it is doing but with 8.4 pellets it was doing 11.4 ftlb and with the mags its doing 11.9 ftlb

[big napper 3,635]

I will get it done to see the fps at the weekend

[Coypu Hunter 486]

I dont know the fps it is doing but with 8.4 pellets it was doing 11.4 ftlb and with the mags its doing 11.9 ftlb

 

At 11.4 fpe and 8.4 grains, that would be 782 fps rounded up. 11.9 fpe for the Bisley Magnum's nominal 10.65 grains would be 709 fps.

[big napper 3,635]

Cheers for that mate it Sounds like a big differance but is it ?

[Coypu Hunter 486]

The main difference will be in the trajectory and your holdover/holdunder. You won't perceive much difference in terms of how long the pellet takes to get where it's going.

 

Put your data into Chairgun and you'll see the difference.

[David.evans 5,323]

BB what scope you got on it mate ?

[big napper 3,635]

The scope is a hawke sport 4 12 50

[villaman 9,982]

 

I dont know the fps it is doing but with 8.4 pellets it was doing 11.4 ftlb and with the mags its doing 11.9 ftlb

 

At 11.4 fpe and 8.4 grains, that would be 782 fps rounded up. 11.9 fpe for the Bisley Magnum's nominal 10.65 grains would be 709 fps.

 

The bis mags I have (two tins) weigh 10.3 -10.4

[big napper 3,635]

Theres no weight on the tin mate

[villaman 9,982]

Chairgun says 10.5gr

[big napper 3,635]

So does the bis mag .177 pellet come in different weights as ive got 3 tins here and none have the weight on

[Coypu Hunter 486]

According to the Bisley website, they're a nominal 10.65 grains. When I weighed a sample of 20 myself, they averaged out at 10.36 grains. The .22 pellets were a little closer to their nominal 21.14 grains, averaging out at 20.72 grains.

 

Interesting to see that they're now, at long last, offering different head sizes for the .177 pellet. Since they're manufactured by H&N, it's a bit surprising they they didn't think't thought of that before...

 

http://www.bisley-uk.com/product_v3.php?i=BIMAA&c=500

[David.evans 5,323]

BB

don't know if this helpsbis mags at 10.6

Fps average 706

Zero 30 yards

Poi at range -4.5 inches

That's what mine does any way

Just a guide line mate

Atb

[charlie caller 3,654]

Charlie caller do you mean the magnums mate

Yes mate Bisley mags, 10.65 grains in .177, I will weigh some tonight just to check, and get an average,never used them in anything else but this Cometa loves them.