Another 'my Hw100 Is Shit Hot' Thread - A&m Cylinder.

[Jonjon79 13,354]

I finally got my bottle filled today so, I was able to put 200bar into my new A&M cylinder for the first time and see what I could get from it.....

 

The rifle is an HW100kt .177. For this test, I used its favourite JSB Heavy 10.34gr. I fired full mags from 200bar and recorded the Combro readings for the first 3 and last 3 shots from each mag.....

 

Mag 1:

S1. 10.86ftlb - 689fps

S2. 11.14ftlb - 698fps

S3. 11.06ftlb - 695fps

S12. 11.25ftlb - 703fps

S13. 11.14ftlb - 698fps

S14. 11.08ftlb - 696fps

 

Mag 2:

S1. 11.22ftlb - 700fps

S2. 11.14ftlb - 698fps

S3. 11.15ftlb - 698fps

S12. 11.15ftlb - 698fps

S13. 11.12ftlb - 697fps

S14. 11.10ftlb - 696fps

 

Mag 3:

S1. 11.18ftlb - 699fps

S2. 11.12ftlb - 697fps

S3. 11.06ftlb - 695fps

S12. 11.08ftlb - 696fps

S13. 11.10ftlb - 696fps

S14. 11.12ftlb - 697fps

 

Mag 4:

S1. 11.15ftlb - 698fps

S2. 11.04ftlb - 695fps

S3. 11.18ftlb - 699fps

S12. 11.29ftlb - 703fps

S13. 11.46ftlb - 708fps

S14. 11.36ftlb - 705fps

 

Mag 5.

S1. 11.40ftlb - 706fps

S2. 11.40ftlb - 706fps

S3. 11.50ftlb - 709fps

S12. 11.45ftlb - 708fps

S13. 11.50ftlb - 709fps

S14. 11.40ftlb - 708fps

 

Mag 6.

S1. 11.50ftlb - 709fps

S2. 11.40ftlb - 706fps

S3. 11.36ftlb - 705fps

S12. 11.49ftlb - 708fps

S13. 11.49ftlb - 708fps

S14. 11.57ftlb - 711fps

 

Mag 7:

S1. 11.54ftlb - 710fps

S2. 11.57ftlb - 711fps

S3. 11.61ftlb - 712fps

S12. 11.12ftlb - 697fps

S13. 10.92ftlb - 691fps

S14. 10.99ftlb - 693fps

 

This is where it looked like it was about to start tailing off so, I recorded the next 5 shots.....

 

S1. 10.66ftlb - 683fps

S2. 10.77ftlb - 686fps

S3. 10.65ftlb - 682fps

S4. 10.55ftlb - 679fps

S5. 10.30ftlb - 671fps

 

Considering that I was getting 56 shots (4 mags) from the original cylinder and, I'm now getting 98 shots (7 mags), I'm very happy with this cylinder.

 

Because it also weighs less, the center of gravity is now near the trigger, making standing shots a lot easier for me.

 

From my results, it looks like I'm better off with a fill of around 190bar to start a nights hunting.

 

I was also surprised to see the pellets energy rise as the air pressure reduced over the last couple of mags.

 

Having only returned to shooting around a year ago, I'm still a newbie with a lot to learn. The amount of info out there can be mind boggling.

I put this us up for anyone that may also be looking for simplified info on this particular subject.

 

I've also attached a pic of what I was shooting at so that you can see the slight drop in point of impact over the last 5 shots.

 

Atb.

 

Jon

Edited March 31, 2016 by Jonjon79

[Jonjon79 13,354]

.....Targets from the test.

Edited March 31, 2016 by Jonjon79

[mark williams 7,549]

Great post JJ and "very informative "

[David.evans 5,323]

Bang on the button , is that JJ

AND YES 190 looks good

Atb

Dave

[Rez 4,957]

Superb post.

[philpot 4,930]

Very informative post.

 

Phil

[Jonjon79 13,354]

Cheers guys. Glad you like it.

 

The only thing that I forgot to add was that the service from Adrian and Mandy at A&M was first class.

 

I've been thinking about trying a lighter pellet for hunting. I might have another bash at this with regular Exacts or FAPs on my next day off.

[villaman 9,980]

Cheers guys. Glad you like it.

 

The only thing that I forgot to add was that the service from Adrian and Mandy at A&M was first class.

 

I've been thinking about trying a lighter pellet for hunting. I might have another bash at this with regular Exacts or FAPs on my next day off.

You would be better of with AA express or jsb Express in .177 or .22 for that matter

FAP are very good in .22 ,haven't had much luck with them in .177

[Jonjon79 13,354]

 

 

Cheers guys. Glad you like it.

 

The only thing that I forgot to add was that the service from Adrian and Mandy at A&M was first class.

 

I've been thinking about trying a lighter pellet for hunting. I might have another bash at this with regular Exacts or FAPs on my next day off.

You would be better of with AA express or jsb Express in .177 or .22 for that matter

FAP are very good in .22 ,haven't had much luck with them in .177

Thanks for the tip.

 

I appreciate it.

[Jonjon79 13,354]

I tested a couple more pellets today - JSB Exact 8.44gr and, H&N Baracuda Hunter Extreme 9.57gr.

I didnt clean the barrel between pellets but, I did put a couple of mags of each through before testing.......

[Jonjon79 13,354]

The exacts were fast and accurate over 30yrds/7 mags averaging around 765fps but, their power was low at an average around 11ftlb.

[Jonjon79 13,354]

The Baracudas were a surprise. Accurate again. These averaged around 735fps over 7 mags. Their power averaged around 11.55ftlb.

 

I think these could be a worthy contender but, I'd like to see how they perform at longer ranges first.

 

..... I'll be using the old faithful JSB Heavies tonight.

Edited April 7, 2016 by Jonjon79