I got some really good results using winchester SuperX 80gr sp in my .243win and haven't been able to replicate the results in my handloads. Anyone got any idea what they use or how to find out what they use?
More than likely it is a proprietary powder. My guess is it would be close to W-760.
With a velocity of only 3350fps it should be easy to replicate. I found several loads that surpassed the velocity. Usually you can back off max velocity and bring the accuracy in. Here is a Guns and Ammo article that might give you some ideas. .243 Varmint Loads
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For info purposes only, use it at your own risk. JFKimmons and G&G aren't liable for it's misuse.
factories do not use powders available to handloaders. no point in trying to figure it out, find a load in a manual that appeals to you and give it a try.
factories do not use powders available to handloaders.
From the link above.
Starting in spring 2008, Hodgdon Powder Co. will start shipping two new powders suitable for target and hunting calibers. Hybrid 100V is designed to combine the even burn qualities of an extruded (stick) powder, with much smoother metering in a powder measure, due to its advanced kernel design. Supreme 780 is the identical ball powder loaded in Winchester’s factory Supreme® ammunition including 243 Win, 270 Win, and 300 Win Magnum.
i dont know that there is any trick to matching factory ammo, all you can do is try changing variables untill you find an acurrite load. all guns are differant in what works best, although, the best load in a similar gun could be a very good starting point.
I would also look into heavy bullets and seating depth.I found that heavier bullets seated to work in the mag,also were seated deep in the case,causing a loss of powder capacity and forcing the use of faster burn rate powders. sam.
factories do not use powders available to handloaders. no point in trying to figure it out, find a load in a manual that appeals to you and give it a try.
True. Manufacturers use huge bulk lots of powder that will vary, and with each run of ammo they build up pressure/velocity tests for that particular lot and run of ammo until they get the desired performance. The cannister-grade powders reloaders buy are more expensive because they are extremely uniform in quality, so you'll get the same results now or when you buy more of it ten years from now. Not so with what the manufacturers use.
Or so I've read.
Last edited by Taurus Fan; 07-09-2008 at 11:14 AM.
Ok that's interesting, would never have known that otherwise. I'm going to muck around with the reloading tomorrow after work, hopefully can get some good results at the range this weekend with the loads....weather permitting ofcourse!
