Rex, I orinally posted this question to "Custom Build - 2,000+ yds Precision Rifle" and wanted to ask for your opinion. I am getting ready to start a custom build on a 338 Lapua Mag for long range. I am currently looking at going with a Defiance Action, a Bartlein barrel (although what would your thoughts on a Proof Barrel be?), JEA 700 stock... and I was set on a Jewell HVR, until I saw your Huber 2 Stage Trigger review (great review BTW!). But I am really curious about what your thoughts are on the 7mm-300 WM vs. the 338 Lapua Mag on the effective external and internal ballistics for hard target interditions out to 1500m+ on these two rifles. I know you are a huge proponent for the 338 Lapua Mag, which is why I have looked at it as a serious build. I am currently running a 300 WM that has been completely modifed, but am wanting something with a bit longer reach, and is harder hitting past 1500m. Your thoughts? What is your personal preference? I have looked for ballistic data on this cartridge but am not finding much. I am curious on what the SS range for the 7mm-300WM is and the Energy ft lbs out past 1500m is? ....Your opinion to how it stacks up with the 338 Lapua Mag as far as a Long Range Duty Rig. Show less
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
Also check out the 28 Nosler! My guess would be they are somewhat comparable in terms of external ballistics... The 7mm300 will definitely be an overbore issue I would say, meaning the barrel will be exposed to much more throat erosion due to the smaller diameter tube. The 338 will probably last longer in terms of barrel life, while also providing much more terminal performance at longer ranges if long range hunting is a must. I would think the 7mm cartridges actually are closer to 338 ballistics than 30 cal cartridges are, due to the higher BC and down range performance. I have a 7mm Rem Mag, but If i had to step it up, id probably do a 28 nosler..... or just make the jump right to the 338 Lapua!
https://www.youtube.com/watch?v=aUNuZ4Ls9w8