Here is a source for it. Get it by the barrel if you want it. http://www.hi-techammo.com
What I remember now about it, is that you can get phenomenal velocities using it with very large cased wildcats. But the barrel will fill up with more crap than you can clean in an afternoon after only 10 shots.
I'm sure it has never been used successfully in any competition beyond blowing up old cars with 20mm machine guns.
To all posters
It is graphite and it is better for the barrel. Have had many people wonder how those using it get so many rounds through their overbore or large chambered rifles.
As for fouling, it is not as bad as the H870 and I can run 40 or 50 rounds through a 6.5/300 Weatherby and it will still shoot great.
I don't know what lot the one poster got hold of but, that has never happen to any of my friends who have used it or myself. Most of the many LR hunters I know use it exclusively for the winter time longrange hunting.
I have probably used more of it then any 10 guys on this or any forum there is.
My barrels last a very long time to. Even the "Big" overbore stuff.
I'm curious as to the degree of accuracy your getting with your Tomahawk and WC872. I always seem to get a flier or two at 1000yds with my 30/338LM Imp and wonder if I'm doing someting wrong. The rest of the shots all group into 6"-7", this is for 10 shots and the temp. is 45-75 degrees. I'm using 97grs and F210 primers which give me an ES of 24fps, the F215's were around 39fps.
I apologize for the wrench I was throwin at ya. Sounds like you guys have made excellent use of it [img]images/icons/smile.gif[/img]
This unfavorable view of these surplus powders came from several sources, who assured me that I should steer clear.
One used it for a 338/50bmg, 2 others, for the 6mm MachV. 2 retail sources inquired, suggested dangerous temperature sensitivities(hi temp)and huge lot inconsistancies.
All said to clean the barrel every 5 shots or forget getting the fouling out. This must be the graphite your refering to.
However, if these things aren't true, then I'm as interested in them as anyone.
Its very difficult to get info about them.
Once again, I appologize
6' or 7" with 8 or 9 shots at 1000 yards don't seem to be to bad at all.
I have seen relays won at Williamsport with those size groups and all 10 shots held in the group with no flyers. It was in cooler weather though and the temp. range you mentioned. The fellow used a 30/378.
Have you tried other powders and still got one or two flyers in a 10 shot string?
If so, it may not be the 872 powder and Could be something else?
I have always used the 215 Federal primer with that amount of Ball powder and it seems to work well for me even though your ES shows better results with the 210 for you. If it works and not broke, don't fix it.
Do you "always" get a flyer or two in a ten shot string?
As for me, we don't shoot 10 shots at game, so the flyer situation has never surfaced.
I use this powder strictly for Longrange hunting for big game in all my rifles. I have tried other powders but, seem to move back to the 872.
My accuracy at 100 yards is one cloverleaf hole most times out with any of the big rifles. At the ranges I shoot (1200 to 1500 yards and further) the accuracy is great and the 240 gr MKs in my Tomahawk seems to repeat very well at those ranges.
As for the rifles I use the 872 in, here is the list. All have at least 30" barrels and some have 34" and 37".
Large cases have a great benifit when using the slower 872 powders. There are much better powders for the 6mm cartridges though.
As for cleaning, I know of one fellow that shot his 7/300 Weatherby in excess of 100 rounds before cleaning and the accuracy was still there.
Most of us use our longrange rifles in Colorado and Pennsylvania and then clean them at the "END" of both hunting seasons when we put them away.
The amount of rounds fired varies but, usually includes a few head of elk and deer, Plinking and spotter shots taken during the two seasons.
It's a great cold weather powder for large cases. I have never used it in a 50 BMG cal as I don't own a 50 except my muzzle loader.