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284 vs SAUM

280 Remington I'm easily getting 2920fps with a 30" barrel with 180 Hybrids or 175gr SMKs with H1000
It is a short action, that long 30-06 case is gonna be challenging.

My personal favorite for a hunting rifle is a 7-08. From a 24"barrel mine runs 140 ABs or 140 SGKs at 2900+. Plenty good for anything east of the Front Range.
 
Once the lapua creedmoor brass is available what about a 7 creedmoor? Slightly bigger capacity than the 7x47.
 
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My personal favorite for a hunting rifle is a 7-08. From a 24"barrel mine runs 140 ABs or 140 SGKs at 2900+. Plenty good for anything east of the Front Range.

I just picked up a 7-08 in a used Rem VLS platform, 24" barrel, that really likes Berger 140 and 168 vlds. What is your go to powder for your 140s to get the stated velocity?

Thanks
 
I tried a few before I ended up where I am. I shoot a lot of F-TR so I had stuff I loaded for 308s. I found that Varget seemed just a little fast. I tried H4350 and with 140s it was just too slow. It would probably work great with the 168s.

A few yrs ago during a Varget shortage I tried 2000MR in my 308, great velocity but the occasional flyer high at 1000 yards due to ES, but 15 times out of 20 it was great (those other 5 cost me too many points to keep using it). We're only talking about 8 inches at 1000 so out to the ranges that I am willing to hunt the MV variations make almost no difference. I have a few pounds of MR 2000 left over so that's what is going in my hunting loads. It's a double based powder and temperature sensitive, but in hunting season that's not an issue. No 90+ degree days to spike the pressures.

My reamer is has FB set up for 162s, and my rifle is set up to feed from AICS mags with no front plate, loaded OAL's at 2.920 on the 140AB. (you can do the same with a Wyatt's box mag and have a smith open the port up) It's a pretty common job these days for smiths to open the feed port for longer bullets. I'll bet your factory chamber has plenty of freebore to load long.
 
7SAUM - 63-65 grains - H1000/Retumbo - 180 gr - 2925fps
- DROP from 200 yds to 600 yds - 2.9", 10MPH wind @ 600 yds - 18.5"

7x47 - 43-44 grains - RL17/PP2000MR - 180 gr - 2750fps
- DROP from 200 yds to 600 yds - 3.3", 10MPH wind @ 600 yds - 20.4"

Yah....you are going to need to explain the whole "drop form 200 yards to 600 yards" thing to me. I musta missed..something!!??

Tod
 
You're not going to get any argument from me. I did say, "7 SAUM is superior to everything IMO". But it is worth considering the huge improvement in efficiency of the 7x47, IF a 180 gr. Berger at 2750fps fills your needs. Consider this contrast, based on avg FPS reported for 26" barrels.

7SAUM - 63-65 grains - H1000/Retumbo - 180 gr - 2925fps
- DROP from 200 yds to 600 yds - 2.9", 10MPH wind @ 600 yds - 18.5"

7x47 - 43-44 grains - RL17/PP2000MR - 180 gr - 2750fps
- DROP from 200 yds to 600 yds - 3.3", 10MPH wind @ 600 yds - 20.4"

I think 7 SAUM is superior to anything in a short action for long range hunting. 284 case is too long requiring the 168,175 and 180 bearing surface to drop below the neck jct. If you use Lapua 6.5x284 brass, you may encounter donut issues after re-sizing. When those longer bullets have to be seated below the donut, those issues will be compounded. 7 SAUM can fit a 180 Berger at 2.98" OAL. For me it comes down to intended use. 7 SAUM for a pure hunting rifle. 284 only considered for 162 grains and lighter. 7x47 if I intend to shoot a higher volume for fun.

Yah....you are going to need to explain the whole "drop form 200 yards to 600 yards" thing to me. I musta missed..something!!??

Tod
Kinda had me guessing too
 
It is a short action, that long 30-06 case is gonna be challenging.

My personal favorite for a hunting rifle is a 7-08. From a 24"barrel mine runs 140 ABs or 140 SGKs at 2900+. Plenty good for anything east of the Front Range.

Yeah probably would sorry I didn't read the original conditions. It could be done, just have to single load, and could only extract a fired round. Would have to pull the bolt for a loaded round. Not the best option. However I will add I have a 7mmWSM and its on a Magnum Short Action, I wish it was a long. Any of the 7's RSAUM, WSM, 284 Win, 280 Rem all work better in a long if you are wanting a repeater.
 
Yeah probably would sorry I didn't read the original conditions. It could be done, just have to single load, and could only extract a fired round. Would have to pull the bolt for a loaded round. Not the best option. However I will add I have a 7mmWSM and its on a Magnum Short Action, I wish it was a long. Any of the 7's RSAUM, WSM, 284 Win, 280 Rem all work better in a long if you are wanting a repeater.

If you seat the bottom of the bearing surface of a 180 gr Berger right at the neck/shoulder jct. of a 7SAUM, you get an OAL of 2.987. That will fit just fine in an Alpha mag. (AICS STYLE) it has an OAL of 3.050.

http://accurate-mag.com/bottom-metals/
 
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Sorry, I meant mils, not inches.

61.5" vs. 70.6"

Or

2.8 mils vs. 3.3
If you seat the bottom of the bearing surface of a 180 gr Berger right at the neck/shoulder jct. of a 7SAUM, you get an OAL of 2.987. That will fit just fine in an Alpha mag. (AICS STYLE) it has an OAL of 3.050.

http://accurate-mag.com/bottom-metals/
. The OUTSIDE dimensions of those mags is 3.050. The coal is under 3.00. It is roughly 2.975+/-. If your getting a oal of a cartridge in those mags of 2.987, you are the exception. At least in a 308 SA mag. I own several of those mags and none of them can fit rounds over 2.98
 
It would be hard to go wrong with a .284 Winchester. Just a bit more versatile and provides better barrel life than the SAUM or 6.5-284. Accuracy is well proven in competition and in hunting. A very easy round to tune and find the right combination of components. Brass is easy to find and doesn't require forming. As another consideration not on your list, the .280 AI will provide a bit more speed if you really want something between the SAUM and .284 win.
I am changing my mind based on everything here. Stick with the SAUM for a hunting short action. I was not considering short vs. long action in .284.
 
If you stay in the ruts with the 6.5 SAUM (.120 fb, H1000, 63gr w/130s, 61gr w/140s) you should get better performance than anything else you're going to pack into a SA. My load with a 100yd zero is 6.1mil to 1k, and still moving 1750fps when it gets there. This load is supposed to be under 55k PSI and give 3000+ rds of barrel life. Check the numbers and see if anything else can match that across the board.
 
Well, to get any flatter than the 6.5 SAUM with a 130 JLK to 1000 you'd have to run the 140 Berger 3450 or better. To match the wind drift, 3900. I don't think you'll get 3k rds of barrel life out of either load.
 
Well, to get any flatter than the 6.5 SAUM with a 130 JLK to 1000 you'd have to run the 140 Berger 3450 or better. To match the wind drift, 3900. I don't think you'll get 3k rds of barrel life out of either load.
Thats a pretty good estimate, but you sure will if you stay around 3100 to 3150 FPS....
 

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