284win mag Feeding issue for AR10 magazine HELP!!!!

[KANEDASHON]

ok guys, I'm thinking about creating a new AR10 (not AR15) recently, paying attention to the excellent ballistic graph of a 7mm bullet. and I am thinking of making an ar10 using 284win which has a case capacity a little more than 7-08win, but there is some problem with the base size of the bullet as shown in the picture below.
Since 284win is basically using rebated rim, I think 308win and 284win are compatible with the same 0.473inch rim. However, because the base size is slightly larger than 284win by 0.03inch, it is possible that the standard ar10 magazine will not be slightly stiff or the ammunition will not be inserted. Also, I think this will greatly reduce the capacity of the magazine.

If there is a problem, I am thinking of making a customized wild cat cartrige with the base size reduced to 0.501>0.475. I wonder if anyone here has ever put 284win in an ar10 magazine?

 

[Supersubes]

Just do a 7-08 and call it a day.

 

[KANEDASHON]

Just do a 7-08 and call it a day.

No... 7-08win requires longer barrels than 308win due to less caliber and has lower kinetic energy. That's why I chose 284win.

 

[Supersubes]

No... 7-08win requires longer barrels than 308win due to less caliber and has lower kinetic energy. That's why I chose 284win.

You’ve chosen a cartridge that wont fit in a AR10 magazine, so your point is moot.

 

[fdkay]

No... 7-08win requires longer barrels than 308win due to less caliber and has lower kinetic energy. That's why I chose 284win.

It doesn't require longer barrels, though they help.
In regards to kinetic energy, the 7-08 has plenty and exceeeds the .308 at distance.

Trajectory
Input Data
Manufacturer:	Hornady	Description:	ELD-X (Extremely Low Drag - eXpanding)
Caliber:	0.284 in	Weight:	150.0 gr
Ballistic Coefficient:	0.289 G7 (ASM)
Muzzle Velocity:	2800.0 ft/s	Distance to Chronograph:	10.0 ft
Sight Height:	1.50 in	Sight Offset:	0.00 in
Zero Height:	0.00 in	Zero Offset:	0.00 in
Windage:	0.000 MOA	Elevation:	0.000 MOA
Line Of Sight Angle:	0.0 deg	Cant Angle:	0.0 deg
Wind Speed:	10.0 mph	Wind Angle:	90.0 deg
Target Speed:	10.0 mph	Target Angle:	90.0 deg
Target Height:	12.0 in
Temperature:	59.0 °F	Pressure:	29.92 in Hg
Humidity:	0 %	Altitude:	0.0 ft
Vital Zone Radius:	5.0 in
Std. Atmosphere at Altitude:	No	Pressure is Corrected:	Yes
Zero at Max. Point Blank Range:	No	Target Relative Drops:	Yes
Mark Sound Barrier Crossing:	No	Include Extra Rows:	No
Column 1 Units:	1.00 in	Column 2 Units:	1.00 MOA
Round Output to Whole Numbers:	No
Output Data
Elevation:	3.627 MOA	Windage:	0.000 MOA
Atmospheric Density:	0.07647 lb/ft³	Speed of Sound:	1116.4 ft/s
Maximum PBR:	346 yd	Maximum PBR Zero:	293 yd
Range of Maximum Height:	161 yd	Energy at Maximum PBR:	1702.9 ft•lbs
Sectional Density:	0.266 lb/in²

(yd)	(in)	(MOA)	(in)	(MOA)	(ft/s)	(none)	(ft•lbs)	(s)	(in)	(MOA)
Range	Drop	Drop	Windage	Windage	Velocity	Mach	Energy	Time	Lead	Lead
Calculated Table
0	-1.5	***	0.0	***	2805.5	2.513	2621.1	0.000	0.0	***
100	-0.0	-0.0	0.6	0.5	2641.7	2.366	2323.9	0.110	19.4	18.5
200	-3.5	-1.7	2.4	1.1	2483.1	2.224	2053.2	0.227	40.0	19.1
300	-12.6	-4.0	5.5	1.8	2329.9	2.087	1807.7	0.352	62.0	19.7
400	-28.2	-6.7	10.1	2.4	2182.4	1.955	1586.1	0.485	85.4	20.4
500	-51.0	-9.7	16.3	3.1	2040.6	1.828	1386.6	0.627	110.4	21.1
600	-82.2	-13.1	24.3	3.9	1903.9	1.705	1207.1	0.779	137.2	21.8
700	-123.0	-16.8	34.2	4.7	1771.7	1.587	1045.3	0.943	165.9	22.6
800	-175.0	-20.9	46.3	5.5	1643.8	1.472	899.8	1.119	196.9	23.5
900	-239.8	-25.4	60.9	6.5	1519.9	1.361	769.3	1.308	230.3	24.4
1000	-319.7	-30.5	78.3	7.5	1400.4	1.254	653.1	1.514	266.5	25.4

Trajectory
Input Data
Manufacturer:	Hornady	Description:	ELD M (Extremely Low Drag Match)
Caliber:	0.308 in	Weight:	168.0 gr
Ballistic Coefficient:	0.263 G7 (ASM)
Muzzle Velocity:	2600.0 ft/s	Distance to Chronograph:	10.0 ft
Sight Height:	1.50 in	Sight Offset:	0.00 in
Zero Height:	0.00 in	Zero Offset:	0.00 in
Windage:	0.000 MOA	Elevation:	0.000 MOA
Line Of Sight Angle:	0.0 deg	Cant Angle:	0.0 deg
Wind Speed:	10.0 mph	Wind Angle:	90.0 deg
Target Speed:	10.0 mph	Target Angle:	90.0 deg
Target Height:	12.0 in
Temperature:	59.0 °F	Pressure:	29.92 in Hg
Humidity:	0 %	Altitude:	0.0 ft
Vital Zone Radius:	5.0 in
Std. Atmosphere at Altitude:	No	Pressure is Corrected:	Yes
Zero at Max. Point Blank Range:	No	Target Relative Drops:	Yes
Mark Sound Barrier Crossing:	No	Include Extra Rows:	No
Column 1 Units:	1.00 in	Column 2 Units:	1.00 MOA
Round Output to Whole Numbers:	No
Output Data
Elevation:	3.990 MOA	Windage:	0.000 MOA
Atmospheric Density:	0.07647 lb/ft³	Speed of Sound:	1116.4 ft/s
Maximum PBR:	319 yd	Maximum PBR Zero:	271 yd
Range of Maximum Height:	149 yd	Energy at Maximum PBR:	1611.3 ft•lbs
Sectional Density:	0.253 lb/in²

(yd)	(in)	(MOA)	(in)	(MOA)	(ft/s)	(none)	(ft•lbs)	(s)	(in)	(MOA)
Range	Drop	Drop	Windage	Windage	Velocity	Mach	Energy	Time	Lead	Lead
Calculated Table
0	-1.5	***	0.0	***	2605.9	2.334	2532.7	0.000	0.0	***
100	-0.0	-0.0	0.7	0.7	2433.2	2.179	2208.1	0.119	21.0	20.0
200	-4.4	-2.1	2.9	1.4	2267.1	2.031	1917.0	0.247	43.5	20.7
300	-15.5	-4.9	6.8	2.2	2108.0	1.888	1657.4	0.384	67.6	21.5
400	-34.5	-8.2	12.6	3.0	1955.4	1.751	1426.1	0.532	93.6	22.3
500	-62.6	-12.0	20.4	3.9	1808.6	1.620	1220.0	0.691	121.7	23.2
600	-101.4	-16.1	30.5	4.9	1666.9	1.493	1036.4	0.864	152.1	24.2
700	-152.7	-20.8	43.3	5.9	1530.2	1.371	873.3	1.052	185.2	25.3
800	-218.9	-26.1	59.2	7.1	1398.6	1.253	729.6	1.257	221.3	26.4
900	-302.9	-32.1	78.5	8.3	1273.1	1.140	604.5	1.482	260.8	27.7
1000	-408.5	-39.0	101.8	9.7	1155.3	1.035	497.8	1.730	304.4	29.1

 

[msgriff]

.284 Win was not designed for a short action. For wildcats, look at the 7mm Walker. Use M118 mags.

 

[knuckleballz]

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