So I am a not a follower. I have always wanted to buck the system. Just how I operate. Warning it can be anoying. Any hoot just finished up a custom 270 win build. I have had two 270's for years mainly hunting. I just alway hear how the 270 is not an extreme long range caliner. To me I think "no 270 could be a good long range 1,000 plus rifle, just can not because basis of design (1 -10) twist and limiting 150 gr bullets will not let it. No high bc bullets = no long range. So I just finished building a custom 270 win with a 1 x 8 to launch 170 gr Berger Elite hunters at what looks like 2,950 +/- out of a McGowen Precision 26" Sendero profile barrel. I did my first ladder and got 2,885 using RL 26, but they are loaded long 3.496" COL. So there is more room. Next ladder will I beleive max at 2,950. From there I will tune. I also am loading out some 150 ABLR ' S expecting 3,100 plus out of these. So there goes the long range myth of the 270. Initial accuracy prove sub moa. More tuning as load development continues. Both rounds show supersonic to 1,700 yds +/- at sea level 59 deg F.
So this build and it's proven thesis got me to thinking. All the scuttle but about the venerable 338 Lapua Magnum. Never owned anything over 30 caliner. A couple of AR10'S in 308 win. So you read and read about how you have all the 338 RUM'S the 338 Edge etc etc. and how the 338 win mag just can not do it. I take that as a challenge. It's like building the little train who could I guess. A little research finds that 338 starting to get some really high BC bullets. While 338 Lapua and Edge have an advantage, they do it at the price of efficiency and cost. Check out Lapua 338 mag ammo, brass etc and after you pick yourself off the floor you think how can afford to fire this thing. So how can attain virtual performance at a cost that will actually allow me to shoot this thing without going broke. We'll you can. The 338 win mag is efficient in terms of net energy vs loads from others. Essentially less powder translated to more work output.
You can get either once fired or new brass relatively cheep compared to Lapua Mag.
So here what I found with a 26" barrel and hand loading you can get the following approximate velocities. 300 gr 2,580, 285 gr 2,650, 265 gr 2,750, 250 gr 2,850. Using using any of the following: Berger Elites in 250 and 300, Nosler 265 gr ABLR's, and Hornady 285 ELD'S you can get to 1,700 yds (+/- 100 yds) supersonic at sea level.
Yes the 338 Lapua can get you to 2,000 the Edge 1,900. but when you look at cost you are getting the 338 win mag to accomplish this at a reload cost of $1.15 to $1.20 per round just slightly more 20% than the 270 win. This means you can actually afford to go out and shoot it. Shooting is what it is all about. So given the above I orderered another McGowen 26" barrel 338 win mag, with a threaded muzzel for a break.. order a 700 magnum SS reciever and a Magpul 700 hunter stock. Unfortunately the barrel will not get here till mid April and until I measure the chamber I will not start loading. Got brass, primers (wlrm) and some 265 ABLR, 285 ELD'S and some Serra 250 SMK's.
I'll keep everyone posted on my load work ups. There are some short ranges around here 200 to 300 yds (good for load development)but ultimately want to stretch both these rounds (270 win and 338 win mag) to 1,000 yds plus. I also a Burris XTR II SCR scope 90 moa vertical adjustment. With a 20 moa rail and a 20 moa scope mount the start of the bottom of adjustment is roughly a 200 yd zero. So you have 90 moa or 26.3 mils vertical adjustment left in scope. All rounds will attain 2,000 yds +/- supersonic at 5,000 ft. Which will take roughly 26 mils.
Keep everyone updated as I develop both these rifles and loads.
Sent from my SM-T530NU using Tapatalk
So this build and it's proven thesis got me to thinking. All the scuttle but about the venerable 338 Lapua Magnum. Never owned anything over 30 caliner. A couple of AR10'S in 308 win. So you read and read about how you have all the 338 RUM'S the 338 Edge etc etc. and how the 338 win mag just can not do it. I take that as a challenge. It's like building the little train who could I guess. A little research finds that 338 starting to get some really high BC bullets. While 338 Lapua and Edge have an advantage, they do it at the price of efficiency and cost. Check out Lapua 338 mag ammo, brass etc and after you pick yourself off the floor you think how can afford to fire this thing. So how can attain virtual performance at a cost that will actually allow me to shoot this thing without going broke. We'll you can. The 338 win mag is efficient in terms of net energy vs loads from others. Essentially less powder translated to more work output.
You can get either once fired or new brass relatively cheep compared to Lapua Mag.
So here what I found with a 26" barrel and hand loading you can get the following approximate velocities. 300 gr 2,580, 285 gr 2,650, 265 gr 2,750, 250 gr 2,850. Using using any of the following: Berger Elites in 250 and 300, Nosler 265 gr ABLR's, and Hornady 285 ELD'S you can get to 1,700 yds (+/- 100 yds) supersonic at sea level.
Yes the 338 Lapua can get you to 2,000 the Edge 1,900. but when you look at cost you are getting the 338 win mag to accomplish this at a reload cost of $1.15 to $1.20 per round just slightly more 20% than the 270 win. This means you can actually afford to go out and shoot it. Shooting is what it is all about. So given the above I orderered another McGowen 26" barrel 338 win mag, with a threaded muzzel for a break.. order a 700 magnum SS reciever and a Magpul 700 hunter stock. Unfortunately the barrel will not get here till mid April and until I measure the chamber I will not start loading. Got brass, primers (wlrm) and some 265 ABLR, 285 ELD'S and some Serra 250 SMK's.
I'll keep everyone posted on my load work ups. There are some short ranges around here 200 to 300 yds (good for load development)but ultimately want to stretch both these rounds (270 win and 338 win mag) to 1,000 yds plus. I also a Burris XTR II SCR scope 90 moa vertical adjustment. With a 20 moa rail and a 20 moa scope mount the start of the bottom of adjustment is roughly a 200 yd zero. So you have 90 moa or 26.3 mils vertical adjustment left in scope. All rounds will attain 2,000 yds +/- supersonic at 5,000 ft. Which will take roughly 26 mils.
Keep everyone updated as I develop both these rifles and loads.
Sent from my SM-T530NU using Tapatalk
That's what really matters in the long run my friend!
