[coopershooter]

i just sent a cooper mod 22 back to the factory. they are going to put a new barrel on for me and this is the caliber i chose, with the recomendations of the guys at cooper.
i need starting loads and any info would be appreciated.
what kind of speed from what bullet weight should i expect?
thank you guys!
coopershooter

 

[jhm]

I have never owned or shot that cal. but somewhere in my trading I came up with a set of dies for it, I posted something here abt. it and someone came back with some load data abt. a yr. ago, cartridges of the world 9th edition, page169 has some load data and history of it. JIM

 

[coopershooter]

JHM,
WOULD YOU BE INTERESTED IN TRADING OR SELLING THOSE DIES? WHAT KIND ARE THEY? WHAT CONDITION?
THANKS FOR THE REPLY!

 

[lowertroll]

6mmx284

I have a set of 6mm x 284 dies that I probably won't use again, since I rebarreled to 6.5x284.
When you get your gun back e-mail me and I will give you what data I have for 6x284.
Sizing the brass down from .284 to .243 is not a slam dunk. My die set had a .25 sizer in it, but that is still a big jump and I caved in a lot of necks. A 6.5 sizer and then 6.0 would be a better way to go. I also found that I had better luck sizing once fired 284 brass.
The 6mm x 284 is comparible to the 240 Weth Mag.
Purchasing 6.5 x 284 brass is expensive.
The round is a hoot to shoot. 8) 8)

 

[dave375hh]

Coopershooter,
My dies are Reddings and I got the form die from them to go from .284 to 6-284. I did 200 Win. cases this way and didn't lose any of them. Next I got some 6.5-284 Norma cases from NECO. Yes they are expensive($61 per 100) . But they are the best brass I've ever seen. 293 of 300 were within 1% by weight, that,s +/- 1grain. Of the 293 I culled 3 more for neck runout and the remaining 290 didn't require neck turning because they were all within .001 as measured on a Sinclair consentricty guage..

Hodgdon and Load from a Disc have load data but Hodgdon is quite conservative. Depending on bullet wt RL-19 is a good place to start, along with H-4350, & H-4831SC Check MD Smith on the net also.

 

[Randy Flowers]

COOPERSHOOTER:

I would be happy to share with you some data I have from when I used to shoot a 6X284 Winchester. As with all data provided on the internet you are on your own here. I cannot be sure they will be safe in your gun. This is just what I found in mine.

The gun I tested was a Remington action with a 26 inch barrel of unknown brand. I will list for you some samples of the loads I tried, all these loads were put up in Wincheser brand 284 Winchester cases. I used a 25 caliber trim die as an intermediate when forming cases and still lost a few due to caved in necks. This gun also split case necks fairly frequently.

Fed 215 / 54 grains H 4350 / Nosler 75 sp / 3730 fps / accurate!

CCI 250 / 51 grains IMR 4350 / Speer 80 sp / 3435 fps
CCI 250 / 52 grains IMR 4350 / Speer 80 sp / 3510 fps
CCI 250 / 53 grains IMR 4350 / Speer 80 sp / 3558 fps

CCI 250 / 51 grains RL 19 / Speer 85 BTSP / 3152 fps
CCI 250 / 52 grains RL 19 / Speer 85 BTSP / 3258 fps
CCI 250 / 53 grains RL 19 / Speer 85 BTSP / 3329 fps
CCI 250 / 54 grains RL 19 / Speer 85 BTSP / 3385 fps


CCI 250 / 54 grains H 4831 / Speer 90 sp / 3443 fps
CCI 250 / 55 grains H 4831 / Speer 90 sp / 3513 fps (max!)

CCI 250 / 50 grains RL 22 / Sierra 100 BTSP / 3091 fps
CCI 250 / 51 grains RL 22 / Sierra 100 BTSP / 3174 fps
CCI 250 / 52 grains RL 22 / Sierra 100 BTSP / 3236 fps
CCI 250 / 53 grains RL 22 / Sierra 100 BTSP / 3340 fps

Fed 215 / 55 grains IMR 7828 / Sierra 100 BTSP / 3322 fps

Fed 215/ 54 grains IMR 7828 / Speer 105 SP / 3210 fps

Fed 215/ 55 grains IMR 7828 / Speer 105 SP / 3275 fps

Again, all these loads were safe in the rifle I tested. What they will do in your rifle, I have no idea.

Hope this is of some value.

R F