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View Full Version : Long range precision - 300 Win Mag


MT1
07-01-2012, 12:18 PM
Currently I shoot my Remy 5R .308 at 700 and 1000y targets with a fixed 10x, and this thing is a tack driver with honest sub 1/2" MOA ...still, I'm looking at building another rifle that will give better performance for these 1000y shots, and maybe further than that. The 700 5R is available in .300 Win Mag which would be capable of the performance I'm looking for, my only concern is that maybe I'm setting myself up for more long term ammo costs and shoulder abuse vs. buying another .308 5R and having it barreled in 6.5 Creedmoor or .260...

Barrel life expectancy?

BigBamBoo?

1 SIG fan
07-01-2012, 1:14 PM
I just bought a DTA srs barreled in .308, .300wm and .338lm for the same reason. One chassis, one optic, 3 cals and 1/4moa with the right load. 1/2 moa is supposedly common. Very cool platform. Should have it in a few weeks... Sell your 5r and consolidate.

Hamstur
07-01-2012, 1:15 PM
300WM should run 2700-3500 rounds. Imho, unless you're hunting big game, you will enjoy shooting a 6.5mm much more (6.5 CM, 6.5 Lapua, 260 Rem). My under 10-lb (with scope) sporter in 6.5 Lapua totally outperforms my 308s and has very little recoil. Even for elk, I would even consider 7 WSM, 7 RSAUM or 300 WSM instead. Maybe I'm just a fan of short actions or feel the heavy recoil of large rounds makes shooting not fun quickly.

Just my opinion, DTA SRS is a bad recommendation. I know 2 people who own one, and I've shot the platform. Both have experienced reliability issues, more people dislike than like the bullpup ergonomics, and you could get a few phenomenal customs for the same cost...

MT1
07-01-2012, 1:31 PM
300WM should run 2700-3500 rounds. Imho, unless you're hunting big game, you will enjoy shooting a 6.5mm much more (6.5 CM, 6.5 Lapua, 260 Rem). My under 10-lb (with scope) sporter in 6.5 Lapua totally outperforms my 308s and has very little recoil. Even for elk, I would even consider 7 WSM, 7 RSAUM or 300 WSM instead. Maybe I'm just a fan of short actions or feel the heavy recoil of large rounds makes shooting not fun quickly.

Just my opinion, DTA SRS is a bad recommendation. I know 2 people who own one, and I've shot the platform. Both have experienced reliability issues, more people dislike than like the bullpup ergonomics, and you could get a few phenomenal customs for the same cost...

From a manly-man perspective I like the idea of owning and shooting a 300WM, but from a practical perspective, I'm thinking the 6.5 would be a better choice...only issue is the ease of accessibility with the Remy 5R in 300WM being able to be purchased as is and ready to shoot, for a 6.5 I would have to buy the .308 rifle, then buy a barrel and find a smith who could rebarrel it for me.

brando
07-01-2012, 1:47 PM
Just my opinion, DTA SRS is a bad recommendation. I know 2 people who own one, and I've shot the platform. Both have experienced reliability issues, more people dislike than like the bullpup ergonomics, and you could get a few phenomenal customs for the same cost...

The reliability issues are often related to the .308WIN and similar calibers being used without the bolt stop insert - this will cause issues when cycling the action. As for ergonomics, a lot of people like them - it's something you can't predict; some love it, some hate it. They are solid, accurate rifles and if you want a single platform/many rifles setup, it's hard to beat.

FMJBT
07-01-2012, 3:11 PM
As a 300 Win Mag owner, I'd go with another caliber for long range. The 300 will definitely get out there, but can be unpleasant to shoot after 40-60 rounds of 190 grain bullets. On the plus side, those same 190 SMK's work pretty well out of a 308 too:D

My next build is going to be a large frame AR in 7mm-08. The 7mm bullets available have some very high BCs, and can be pushed much faster than a 308 bullet of similar BC. 7mm-08 brass can also be formed pretty easily from 308 brass, as it's only being necked down a little over half a millimeter.

wooger
07-01-2012, 3:14 PM
You may have a tough time getting the 180's up to speed in a 7-08 but 162's should work decently. Why not a short mag on a long frame AR?

FMJBT
07-01-2012, 3:24 PM
You may have a tough time getting the 180's up to speed in a 7-08 but 162's should work decently. Why not a short mag on a long frame AR?

Got a metric butt-ton of 308 brass.

wooger
07-01-2012, 3:27 PM
That's a good reason!

Switchbarrel
07-01-2012, 4:35 PM
Currently I shoot my Remy 5R .308 at 700 and 1000y targets with a fixed 10x, and this thing is a tack driver with honest sub 1/2" MOA ...still, I'm looking at building another rifle that will give better performance for these 1000y shots, and maybe further than that. The 700 5R is available in .300 Win Mag which would be capable of the performance I'm looking for, my only concern is that maybe I'm setting myself up for more long term ammo costs and shoulder abuse vs. buying another .308 5R and having it barreled in 6.5 Creedmoor or .260...

Barrel life expectancy?

BigBamBoo?

You are claiming to be achieveing accuracy better than many benchrest rifle setups with your Remington .308 at 1000 yards. I would not expect to find anything better by going to another rifle/caliber. Keep what you have, buy something else just because you want it.

MT1
07-01-2012, 10:08 PM
You are claiming to be achieveing accuracy better than many benchrest rifle setups with your Remington .308 at 1000 yards. I would not expect to find anything better by going to another rifle/caliber. Keep what you have, buy something else just because you want it.

I should have been more clear - it is consistently sub 1/2" moa at my 200 yard zero, and even at 600y, past that and I am not accurate enough of a shooter with my 10x to achieve a 1/2" moa (5") grouping at 1000y although the gun may be perfectly capable of doing so with a different shooter.

1 SIG fan
07-01-2012, 10:23 PM
Not to be "that guy"....

But it's not 1/2" moa... It's 1/2 moa.
One moa is actually 1.047"
But rounded to 1". Written as 1moa. Or sub moa... Like 1/2 moa.
Your idea was right, just not the nomenclature.
See this link for more info.
http://www.gunsamerica.com/blog/minute-of-angle-moa-accuracy-out-of-the-box/

Short Action Precision
07-01-2012, 10:45 PM
I should have been more clear - it is consistently sub 1/2" moa at my 200 yard zero, and even at 600y, past that and I am not accurate enough of a shooter with my 10x to achieve a 1/2" moa (5") grouping at 1000y although the gun may be perfectly capable of doing so with a different shooter.

Even with that being said 1/2 MOA at 600 yds consistently is some dam good shooting. I would stick with it unless you plan on shooting past 1k. At 1k the 308 is fine. Not ideal but just fine.

MT1
07-01-2012, 10:54 PM
Thanks sig fan, I know the details behind MOA, it's just hard to break the habit of sticking the " in there. Now start talking to me about mils and I'll get confused. ;)

Let's just say that I want to build a rifle that will in fact be ideal at 1k, possibly 1200 if we clear some trees...the more I've been reading today the more I'm swaying away from the 300 to the 6.5

brando
07-01-2012, 11:01 PM
Yeah, .300WM is an excellent economical alternative to the .338LM and does well to about 1400 yards. But in your situation one of the 6.5mm cartridges is likely a better choice. Not only are they more comfortable to shoot sustained, but with the right mix of components are good to 1200 yards or so. That said, they require at least a 26" barrel to get into the right velocity window for them to perform, while a .300WM with a shorter barrel will likely get you farther - so there's plenty of give & take when considering your options.