Rex, what are your thoughts on the newer IMR and Hodgdon powders with CFE (Copper Fouling Eraser) and how they impact copper equilibrium in a barrel? At first blush, this seems like a good way to keep your bore at a state of copper equilibrium that is at a lower level of overall copper buildup than without CFE. Potentially keeping you on the flat portion of the copper equilibrium curve for longer. Does it work out that way in the real world? When working up a new load for extreme long range, are the worth checking out?
pricosurf
Oct 17For sale is a custom 7-300 win mag custom ELR rifle with Bartlein barrel and Mirage ULR chassis made by PMAC precision. Rifle comes as a package ready to go which includes a scope, custom load, confirmed DOPE to 2,550 yds, dies, bullets brass - everything you need to hit targets to 2,500 +. Avoid the 4-6 month wait for a custom builder. It has approximately 400 rounds down the tube. I took the ELR3000 course with this rifle and reliably hit targets to 2,551 (~2/5 were hits). I have a custom hand load as well as a load worked up by Copper Creek Cartridge that is sub 0.5 MOA and can be ordered direct from CCC if you are not a reloader. This is the load I used to hit out to 2,551 yds. Asking $5,995 for everything plus shipping (rifle alone is $6,700 + 6 month wait when new). I added everything up and it is well over $10,000 for everything included. Details on what is included in ELR package (happy to discuss any and all details by phone): Rifle: The rifle is a PMAC precision 7-300 win mag ( https://www.pmacprecision.com/rifle-packages ). It is essentially the same as Rex's and was built about the same time. I have heard that a rifle similarly configured has been used in field in limited circles. It has a 26 inch Bartlein heavy profile (MTU contour) barrel with a 1:8 inch twist. Action is a Stiller TAC 300 with 30 MOA scope rail. Trigger is a Jewell. Muzzle brake is an APA Gen II Fat Bastard. The chassis is a Mirage ULR chassis with an upgraded adjustable stock (the stock is awesome and has a lot of adjustment). Scope: IOR Recon 1 with 40 MM main tube. The scope tracks 100% on paper (see pics) and all the way out to 2,500 yds +. Has German Schott glass. It comes with a 40 MM American Rifle Co. 30 MOA M10 QD-L scope base ($300), a 40 MM bubble level ($34), Tenebreax cover for ocular ($38) and an objective sunshade. Reloading equipment: - Redding 7/300 win mag die set - 150 Nosler 300 win mag virgin cases - 120 RWS 300 win mag brass (virgin): this is arguably the very best 300 win mag brass and is very expensive ($41/20 and only available from one location). - 200 once fired Hornady cases from Copper Creek Cartridge loads - 150 195 gr Berger EOL bullets - 100 197 gr Sierra bullets - 100 Hornady 180 gr bullets Data/resources: - Custom Ballistic XLR ballistic data package with DOPE past 1 Mile (includes many tertiary ballistic data) - Confirmed DOPE to 2,500 https://i.imgur.com/Tg5wi2A.jpg
Good question. I'm interested in the answer too.
I had the same thoughts and did some testing on a 308. Short answer, it just keeps less fouling in barrel, but you can still find equilibrium. That being said, I shy away from copper removing powders like CFE, Vihtavuori, etc in my extreme range rifle that I do keep at equilibrium. By using them you are introducing one more variable into the equation, one that is very difficult to measure and may change from lot to lot. I have other rifles where I use some powders with a copper removing agent, but they aren't my extreme range "first shot, one shot" rifles. Just my two cents.
Copper equilibrium has some suspect to clear over the version that was shared on this formation it was good to read. I can take some powers of the plants that have paperfellows this can be explained over some new formats that have some work police to get all on it.