I got my 8lb jug of 800 X in and this powder can NOT be used in a progressive RCBS 2000 loader with a RCBS style powder measure. I wanted to see how accurate the powder measure was with this powder. My first 6 loads measured 7.4 ,6.8,6.6 ,6.9,7.2,6.7 gr OOooouch!
No wonder UW ammo has problems with consistency using this powder.
Each load must be weighed out on my digital scale.
Sean
You just aren't good like Kevin :P ;D
He modified his equipment :-X
Yes, 800X is one that is a little difficult to get it to meter precisely, Therefore I hand weigh'em to the precise amount and know absolutely how much is there each and every time. ;D
If you want a powder that measures easier for progressive press work, go with Power Pistol.
I have never tried 800X but as The Shadow said, power pistol meters great in my Dillon powder measures. When I am loading H4350, I can not use the Dillon measure as I get the same results you had with 800X. I did find a different type of powder measure that does work really well with stick powders though and I am wondering how it would do with 800X. If I can find some, I will give it a try at some point. It's called a "quickmeasure" and it's similar in function to the Harrell type measures but works on a progressive press. I get really accurate charges with H4350 when loading my 30-06 rounds and it's only slightly slower than using the Dillon measure.
Ron
Yup. 800-X does not meter well enough in a progressive or bench mounted powder measure to be safe by my definition of safe, unless loading really light loads in 10mm which would be too sporadic to be realistic anyway in my view. Has to be hand-weighed for realistic consistent results.
Regarding Power Pistol being brought up for easier metering; Personally I choose Longshot over Power Pistol, not because of better metering per se, but because IMO it's just a much better all around powder for 10mm. I know Longshot costs more than Power Pistol, but in direct regard to 10mm Auto it's my view that you're getting more for the money anyway.
I posted some 800 X loads in my velocity comparison chart topic.
Sean
Power pistol seems a little fast for heavy 10mm to me. Longshot is better suited, IMHO.
I have been experimenting a bit lately with trying to get 800x to reasonably meter. The Lee Auto-Disk was a total failure (watch out for bridging). My next test was with the Lee Perfect Powder Measure (rifle use). With a ~9.4 target I was able to throw 5-6 charges at +-0.15 gr (0.3 gr total deviation) accuracy, things were looking promising... then the next charge was ~7 grains... following charge only had a little bit of powder. The powder bridged and clogged the intake. A couple of taps on the measure got things flowing again. I've found that if I give three succinct taps on the measure before throwing I can get decent accuracy (0.2 grain overall deviation) and no bridging occurs. I still weigh every single charge and do not trust this method with 800x. This is simply a quicker way for me to throw many charges while still hand weighing every charge for accuracy.
My guess is that Underwood is utilizing some sort of vibrating/impacting mechanism on their measure when using 800x... I think that with a little bit of trial and error you could make that work. Also, a system with an enlarged inlet may work well. None of this type of modifications interest me that much as I'm only planning on using 800x for MAX loads which I hand weigh anyways.
Quote from: 475/480 on June 17 2013 06:18:19 AM MDT
I posted some 800 X loads in my velocity comparison chart topic.
Sean
I checked them out. Lookin good! I'm looking forward to your next round of work ups. It's awesome you have a Kimber to do your testing being that the chamber support it second to none in terms of semi-autos. 8)
Quote from: RMM on June 17 2013 11:22:15 AM MDT
I have been experimenting a bit lately with trying to get 800x to reasonably meter. The Lee Auto-Disk was a total failure (watch out for bridging). My next test was with the Lee Perfect Powder Measure (rifle use). With a ~9.4 target I was able to throw 5-6 charges at +-0.15 gr (0.3 gr total deviation) accuracy, things were looking promising... then the next charge was ~7 grains... following charge only had a little bit of powder. The powder bridged and clogged the intake. A couple of taps on the measure got things flowing again. I've found that if I give three succinct taps on the measure before throwing I can get decent accuracy (0.2 grain overall deviation) and no bridging occurs. I still weigh every single charge and do not trust this method with 800x. This is simply a quicker way for me to throw many charges while still hand weighing every charge for accuracy.
My guess is that Underwood is utilizing some sort of vibrating/impacting mechanism on their measure when using 800x... I think that with a little bit of trial and error you could make that work. Also, a system with an enlarged inlet may work well. None of this type of modifications interest me that much as I'm only planning on using 800x for MAX loads which I hand weigh anyways.
Certainly can't say you didn't put in the effort to try and make it work. Thanks for sharing the experience. 8)
800X ,Yes bridging is a problem kinda reminds me of a smaller version of Blue dot.
Sean