Brocock Contour, ne...
 

Brocock Contour, need info on performance  

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Cruisers
(@cruisers)
Joined: 2 years ago
Posts: 49
2019-03-25 16:16:05  

I have one in .22 and wondered if anyone had one and could share the performance info: # of full power shots on a charge (psi) , pellet used and speed of said pellet.


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pistolero
(@pistolero)
Joined: 2 years ago
Posts: 314
2019-03-27 00:08:18  

Maybe this excerpt from Airgun Chronicles will provide some insight(s)-

.22 Brocock Bantam Hi-Lite bolt-action pre-charged pneumatic repeater

Bantam

16gr Air Arms Field, 10 shots, 54 shots/250 BAR- Lo= 888, Hi= 895, ES= 7, SD= 2.5, Avg= 891 FPS/28.2 FP

18.1gr JSB, 10 shots- LO= 845, Hi= 854, ES= 9, SD= 2, Avg= 848FPS/28.9 FP

18.1gr JSB, 230 BAR* charge, 60 shot powerband=  835 862 27 4       852/29.0 

10/4/2018- Six consecutive 5 shot groups at 50 yards with 16gr. AA averaged .50” c-t-c.

*An optimum charge pressure of 235 BAR on the gun gauge returns 65 consistent shots! 

.177 Brocock Contour S6 bolt-action pre-charged pneumatic repeater

Contour LS

8.4gr Air Arms Field, 3000 PSI, 5 shot powerband- Lo= 907, Hi= 929, ES= 22, SD= 5, Avg= 918 FPS/15.7 FP

8.4gr AA, lighter spring, 2900 PSI, 26 shot p-band- Lo= 867, Hi= 888, ES= 21, SD= 4, Avg= 880 FPS/14.5 Fp

 

A pretty nifty, little lightweight carbine that averaged about 1” groups at 50 yards.

"No brag; just fact."- Will Sonnett


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Hotair
(@hotair)
Joined: 11 months ago
Posts: 551
2019-03-27 00:11:04  

I have a pair of 177 Grand Prix Elites with smaller/shorter air cylinders (pistols) with the factory manometers at the ends and get around 30-32 shots with one shooting 630-650fps with 8.44gr JSBs and the other 18-20 shots shooting 10.34gr at around 700-720fps.

My best guess with the Contour in 22 with longer air cylinder and barrel, assuming you adjusted the power to a higher than factory set level you are getting about 780-800fps shooting 15.9gr JSBs for around 18-20 shots or 30-35 shots shooting at 650-675fps with the same pellet.

Pistoleros looks like the older Falcon FN12 with a different magazine.

The Bantam Hi Lite (there is absolutely no comparison shot count wise).

If yours has a manometer at the end of the air cylinder you have the larger diameter air cylinder and should get quite a bit more shots than I guessed. If yours does not have the manometer then you have the smaller air cylinder which I guesstimated.

They typically like to be filled starting between 2600-2700psi (sweet spot) but roughly 20-25% less shots than quoted as compared to filling to 3000psi with a power curve.

I am not sure if the Contour has the Daystate sling shot hammer system in it (to save air) like the Compatto and Bantams have.

HA


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Cruisers
(@cruisers)
Joined: 2 years ago
Posts: 49
2019-03-27 07:34:03  

Thanks for the info guys. I'm trying to sort this thing out. It's leaking down over a few days and when charged to about 3K it still is shooting only about 640 fps with 13-14 grain pellets. I felt it should be doing much better. It has a very small air tube and no pressure gauge.


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Cruisers
(@cruisers)
Joined: 2 years ago
Posts: 49
2019-03-27 17:23:56  

Does anyone know the cc capacity of the air tube on the Contour? Remember no pressure gauge.


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Hotair
(@hotair)
Joined: 11 months ago
Posts: 551
2019-03-28 19:41:05  

My best guess would be 60-80ccs.

HA


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