Brocock Concept Lite is in the house...

Shot count: At the highest setting looks like around 50 shots, I just looked at the pressure gauge, it's ready to be filled again, I have just over 50 rounds through it this AM... That's at the highest setting... I've made no adjustments out of the box...

Ken

I hope to punch some holes in paper tomorrow with the Concept Lite ( I named this rifle "Connie")... I'm as anxious as all of you to see how well this rifle shoots... I decided to move my Hawke Airmax SF Compact to my new Concept Lite and mount a UTG Bug Buster on my Leshiy, so I'll be mounting a couple scopes today and hopefully installing some other goodies on my new Concept Lite... I am going to shoot a couple more strings through the chronograph today, I will post the data sets... More to come...

Ken 

You're welcome, I hope the info I provide is useful, I'm getting ready to shoot a few more chronograph strings at the other power adjuster settings, I'll post the data sets later today, I was swapping the scope from my Leshiy to the Concept Lite when I discovered the battery in the EDMU on my Leshiy is dying, so I need to replace that today too... I love this hobby, always something to tweak or fiddle with... One more scope to mount today too...



Ken

I shot another ten rounds through the chronograph with the Concept Lite on power setting 4, here's the data set from that session...



Created: 08/06/19 10:54 AM

Description: String 3

Notes 1: power setting 4

Notes 2: JSB Jumbo Exact 15.9

Distance to Chrono(FT): 1.00

Ballistic Coefficient: 1.000

Bullet Weight(gr): 15.89

Temp: 71 °F

BP: 1010.08 inHg

Altitude: 850.00

# FPS FT-LBS PF

10 859 26.04 13.65

9 863 26.28 13.71

8 864 26.34 13.73

7 862 26.22 13.70

6 879 27.27 13.97

5 855 25.80 13.59

4 ERROR 3

3 857 25.92 13.62

2 ERROR 3

1 872 26.83 13.86

Average: 863.9 FPS

SD: 8.0 FPS

Min: 855 FPS

Max: 879 FPS

Spread: 24 FPS

Shot/sec: 0.0

True MV: 864 FPS

Group Size (in): 0.00



Regarding accuracy, I'll let the photo speak for itself, 18.5 yards, ranged on my accurate range finder, all ten rounds one ragged hole, from a bi-pod...

I can only add this, I am a decent shooter, 237 out of 250 on the KDQC with iron sights and an M-16, I can't max the offhand because I am too tall and thin (the wind blows me around)... I have zero experience tuning an air rifle, I came from the PB world... Ok, a lil better than decent... One ragged hole, ten shots...







Ken



EDIT: I looked closer at the target, it might be nine in one ragged hole, I cannot determine if the one at 9 o'clock wide left is a flyer or not...

Ok, shot another string at 18.5 yards, ten shots on power setting 3, one ragged hole, JSB 15.89gr, Jumbo Exacts...

Created: 08/06/19 12:26 PM

Description: String 4

Notes 1: Power setting 3

Notes 2: JSB Jumbo Exact 15.89

Distance to Chrono(FT): 1.00

Ballistic Coefficient: 1.000

Bullet Weight(gr): 15.89

Temp: 75 °F

BP: 1011.00 inHg

Altitude: 0.00

# FPS FT-LBS PF

10 772 21.03 12.27

9 767 20.76 12.19

8 763 20.54 12.12

7 771 20.98 12.25

6 779 21.41 12.38

5 774 21.14 12.30

4 773 21.09 12.28

3 769 20.87 12.22

2 773 21.09 12.28

1 789 21.97 12.54

Average: 773.0 FPS

SD: 7.1 FPS

Min: 763 FPS

Max: 789 FPS

Spread: 26 FPS

Shot/sec: 0.1

True MV: 773 FPS

Group Size (in): 0.621



Ten shots, 18.5 yards, Power Setting 3, from a bi-pod, JSB 15.89gr Jumbo Exacts







From a bi-pod on my mattress (bed)… Ken

So, a little clarification, the Concept Lite actually has four (4) different power settings via the Power Adjuster...

Here's another ten shots put through the chronograph on the lowest setting, using JSB Exact Jumbo 15.89gr, again, ten shots, one ragged hole...

Created: 08/06/19 02:33 PM

Description: String 5

Notes 1: Lowest Power Setting

Notes 2: JSB Jumbo Exact 15.89gr

Distance to Chrono(FT): 1.00

Ballistic Coefficient: 1.000

Bullet Weight(gr): 15.89

Temp: 80 °F

BP: 1011.00 inHg

Altitude: 0.00

# FPS FT-LBS PF

10 599 12.66 9.52

9 599 12.66 9.52

8 602 12.79 9.57

7 604 12.87 9.60

6 605 12.92 9.61

5 601 12.75 9.55

4 600 12.70 9.53

3 606 12.96 9.63

2 608 13.05 9.66

1 602 12.79 9.57

Average: 602.6 FPS

SD: 3.1 FPS

Min: 599 FPS

Max: 608 FPS

Spread: 9 FPS

Shot/sec: 0.1

True MV: 603 FPS

Group Size (in): SEE PHOTO



My group opened up a lil bit, my fault, my breathing and heart were not in control... Just ate lunch...





Ken

The rifle is 32.5 inches long with the stock collapsed, I'm about to make it a whole lot shorter... About to install some new goodies on my Concept Lite...



In the first photo you can see the MagPul MOE AK+ Grip (Rubber)

The second photo shows the parts I am using to convert to a Magpul folding UBR stock...

EDIT: Ooops sorry, the 32.5" is with the LDC removed... With my 0db LDC on, the folding adapter installed and UBR stock collapsed (not folded) 39.75"...

Ken

Here's the piece I am using to convert to a folding stock, there are a few options available, I like this one...



Ken

Changing to a folding stock is pretty straightforward, remove the old stock and buffer tube (unscrew it from the receiver, a firm twist is all that is needed to unscrew the buffer tube (at least on my rifle)



Next install the folding adapter...



There are several adapters on the market, follow the directions for yours...

Ken

I chose a Magpul UBR stock, there's a storage compartment in the stock, can hold one extra magazine for this rifle, or …??? And a little room to spare, not quit enough space for two magazines...

There are many AR style stocks, some other adjustable AR stocks will work with the stock Brocock buffer tube, some AR stocks require special buffer tubes, follow the directions for the stock you're installing... Here's some more photos showing my installed folding stock...

And a couple photos collapsed and folded... Folded my rifle is just under 26" long... Enjoy...



Ken

I may try my Magpul PRS (Precision Rifle/Sniper) stock on the Concept Lite, it allows for adjustment of the cheek weld and pull, it also has a picatinny rail on the bottom of the butt end for a monopod, handy for bench shooting... It's a bit more complicated of an install and the rifle will need a correct MILSPEC buffer tube to mount on the Concept Lite, it can be used with the folding adapter I am using, I may pull it from my other rifle to see how it feels on the Concept Lite, I'll take some photos...



If you have an AR style rifle and it's front heavy, try a PRS it's heavier than most AR style stocks and can help balance out a longer front heavy rifle (bull barrels etc)

Just my .02 from experience...

Ken

You may not want to base the shot count per fill on my writing, my SCUBA tank isn't at full pressure and I am not getting a complete 230 bar fill on my rifle...

Just an FYI... Ken