7mm Gunner - Hunting with the AR, small actions and magazines...

[Meketrefe]

So here is another cat that I have been working on.
Lots of power, long reach, yet still manageable and very compact.
It feeds from the AR15 magazine (the small ones, not the AR10).
Also it would be great for those of those compact CZ rifles.
I know what you are thinking, we are not done with one cat and we start another one? LOL.
Well life is that cruel sometimes. The think, this one started before the 357 gunner and now it is done.



7MM GUNNER / 7x40 AR

Caliber: .284 / 7mm
Case length: 1.62" 41.15mm
Max COAL: 2.30 (AR15 magazine)
Case Capacity: 46gr h2o
Base: .470 (308w bolt face)

7mm Badger with 140gr Berger hunting VLD - Barrel 22"

Ballistic Coefficient	0.51	Velocity (ft/s)	2680	Weight (grains)	140
Maximum Range (yds)	1000	Interval (yds)	100	Drag Function	G1
Sight Height (inches)	2.5	Shooting Angle (degrees)	0	Zero Range (yds)	200
Wind Speed (mph)	10	Wind Angle (degrees)	90	Altitude (ft)	555
Pressure (hg)	29.53	Temperature (F)	59	Humidity (%)	0.78

Ballistics Results

RANGE(YARDS)	VELOCITY(FPS)	ENERGY(FT.-LB.)	TRAJECTORY(IN)	COME UP IN MOA	COME UP IN MILS	WIND DRIFT(IN)	WIND DRIFT IN MOA	WIND DRIFT IN MILS
Muzzle	2680	2233	-2.5	0	0	0	0	0
100	2510	1958	1.5	-1.5	-0.4	0.7	0.7	0.2
200	2346	1711	0	0	0	2.8	1.3	0.4
300	2189	1489	-7.8	2.5	0.7	6.4	2	0.6
400	2037	1290	-22.9	5.5	1.6	11.7	2.8	0.8
500	1892	1113	-46.4	8.9	2.6	18.9	3.6	1
600	1754	956	-79.7	12.7	3.7	28.1	4.5	1.3
700	1624	820	-124.2	16.9	4.9	39.7	5.4	1.6
800	1502	701	-182	21.7	6.3	53.9	6.4	1.9
900	1390	601	-255.2	27.1	7.9	70.7	7.5	2.2
1000	1289	517	-346.4	33.1	9.6	90.5	8.6	2.5

[Meketrefe]

The concept that started this development ...

[Meketrefe]

Some hoochie mommas!!!

I am not going to say these are cases are super easy to make but the rewards are many. ...but not so bad neither and also
not fireforming needed so that is a plus

[Meketrefe]

If you think folks are not that interested on these type of threads let me know. I will try to find other subjects.
Here a quick pic of the test barrel in the making for this bad azz caliber.

[24Pink14Stink]

I think it's awesome! I dunno what to say about it, but I think you come up with some kick ass stuff.

[phritz]

I really enjoy these threads. They're way over my head, but I like learning new things.

[Meketrefe]

Good. Thanks guys. I am trying to keep it interesting. I know this is pretty dedicated exclusive stuff but also there are many nice rewards.
Here is the 7mm Gunner / 7x40 AR compared vs. other AR capable rounds....
The third from the left next to the 6.5BR based on the 6mmBR norma case with a relatively smaller but fast 95gr VMAX.
As you can see the case width and "boiler room" capacity is much larger than the BR case and even the BRX poplular line of wildcats.
Precisely it produces 47.1gr of h2o. Next you can see the 120gr sp and 150gr Noster BT both popular 7mm/08 hunting bullets.
The 2nd from the left you can see the 168gr Berger that is a tad too much but currently moving at 2400fps. I need to work more on that one
but this is a tad too long and too much of a jump into the lands for this kind of use. But anyway we have the amazing 140gr-150gr ones
for large game hunting and target that is really the objective. Very flat shooting too.

[Meketrefe]

Any interest on this thread? otherwise I think we should close it.