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7mm SAUM

 
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  #1  
Old 02-27-2011, 08:50 AM
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Posts: 4
7mm SAUM

Hello all, my first post here.

After snooping around the web and such I am puzzled as to why more folks are not using the 7mm SAUM. With the addition of Norma brass in 300 SAUM available and concidering that the cartridge is much more efficient than it's Win. counterpart, with very little difference in velocity.

This question came up after a phone call from my pops. He decided he would head out to Colorado to join me for an elk hunt before he is not able. He is sneaking up on 75 years of age and I want to steer him towards something he will be able to shoot for a few years.


Any thoughts?
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  #2  
Old 02-27-2011, 09:28 AM
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Join Date: May 2007
Posts: 223
Re: 7mm SAUM

Quote:
Originally Posted by 30-06 View Post
Hello all, my first post here.

After snooping around the web and such I am puzzled as to why more folks are not using the 7mm SAUM. With the addition of Norma brass in 300 SAUM available and concidering that the cartridge is much more efficient than it's Win. counterpart, with very little difference in velocity.

This question came up after a phone call from my pops. He decided he would head out to Colorado to join me for an elk hunt before he is not able. He is sneaking up on 75 years of age and I want to steer him towards something he will be able to shoot for a few years.


Any thoughts?

You really can't go wrong with either. The 7SAUM is an excellent choice and when loaded with 150 or 160 bonded or partition bullets will perform very well on elk. If you want to load the Bergers it's good for that too. Recoil should be very tolerable and downrange energy and velocity should be acceptable as far out as you can hit anything.

I don't really know why the 7SAUM hasn't been more popular. In an odd twist, the 7SAUM does seem to be more popular than the 300SAUM, something which almost never happens in the U.S.. I think maybe Remington got into the short action magnum game just a little bit behind Winchester and they've never been able to catch up.
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  #3  
Old 02-27-2011, 09:51 AM
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Posts: 5,614
Re: 7mm SAUM

Quote:
Originally Posted by 30-06 View Post
Hello all, my first post here.

After snooping around the web and such I am puzzled as to why more folks are not using the 7mm SAUM. With the addition of Norma brass in 300 SAUM available and concidering that the cartridge is much more efficient than it's Win. counterpart, with very little difference in velocity.

This question came up after a phone call from my pops. He decided he would head out to Colorado to join me for an elk hunt before he is not able. He is sneaking up on 75 years of age and I want to steer him towards something he will be able to shoot for a few years.


Any thoughts?

Don't get to hung up on efficiency because in many cases it is both barrel and chamber combinations
and not the cases themselves that have the most effect on velocity and case capacity.

The 7mm SAUM and The 7 wsm are very close in capacity and velocities are also very close with
the edge going to the WSM because it has a few grains more of powder capacity and there for more
velocity potential all though not much.

Both are great cartriges and are just a matter of personal choice.

Remington was the first to come out with the "Short Mag" and Winchester countered with the WSMs
and a proprietary powder that gave there cartridge more velocity and as we know Velocity Sells.
And now days if you can get 50 ft/sec more that the next guy you will sell more rifles with that
chambering.

When looking at efficiency what does 2 grains less amount to. In a 1 lb can of powder it
there are 100, 70 grain loads and there are 102.9 loads @ 68 grain load (Not much) but a
velocity increase of 50 ft/sec is significant compared to 2 more grains of powder.

Find a rifle that you like and go with it.

J E CUSTOM
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  #4  
Old 02-27-2011, 11:11 AM
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Join Date: Feb 2011
Posts: 4
Re: 7mm SAUM

Quote:
Originally Posted by J E Custom View Post
Don't get to hung up on efficiency because in many cases it is both barrel and chamber combinations
and not the cases themselves that have the most effect on velocity and case capacity.

The 7mm SAUM and The 7 wsm are very close in capacity and velocities are also very close with
the edge going to the WSM because it has a few grains more of powder capacity and there for more
velocity potential all though not much.

Both are great cartriges and are just a matter of personal choice.

Remington was the first to come out with the "Short Mag" and Winchester countered with the WSMs
and a proprietary powder that gave there cartridge more velocity and as we know Velocity Sells.
And now days if you can get 50 ft/sec more that the next guy you will sell more rifles with that
chambering.

When looking at efficiency what does 2 grains less amount to. In a 1 lb can of powder it
there are 100, 70 grain loads and there are 102.9 loads @ 68 grain load (Not much) but a
velocity increase of 50 ft/sec is significant compared to 2 more grains of powder.

Find a rifle that you like and go with it.

J E CUSTOM

OK maybe I did not articulate my thoughts very well.
Using the Nosler #6 loading guide (I chose Nolser out of the buffet of manuals available today because Nosler used a 24" Wiseman barrel for both 7mm SAUM and 7mm WSMz).
If you look at 160 gr. bullets IMR 4350 is used in both cartridges (Nosler choose to only include 4 powders in the SUAM data for reasons of their own).
SAUM max velocity is 2917 with 56 gr. IMR 4350
WSM max velocity is 2894 with 57.5 gr. IMR 4350

If you look at the 175 gr partition
SAUM max velocity is 2820 with 59.0 gr. of AA3100
WSM max velocity is 2817 with 61.0 gr. ofAA3100

Again there is limited powder data for this cartridge in the Nosler guide, I chose these powders because they were listed for both cartridges.
If you look at lighter bullets the WSM does have some advantage in velocity but certainly not the heavier bullets.

Last edited by 30-06; 02-27-2011 at 11:13 AM. Reason: typo
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  #5  
Old 02-27-2011, 12:12 PM
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Join Date: Oct 2008
Location: New Bern, NC
Posts: 610
Re: 7mm SAUM

I decided to try H1000 in my SAUM with the 162 Amax. By the books I'm under the max by a few grains and shooting 150 fps over what Hornady says the max should be. IMO the reloading books are there as guidelines, not gospel. Let the rifle tell you what it likes, 4350 might be the best powder for your rifle or it might be the worst. Good luck.
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Custom built 7mm SAUM
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  #6  
Old 02-27-2011, 12:23 PM
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Location: az
Posts: 2,418
Re: 7mm SAUM

because i can't find anyone to sell me a 700ti or sendero in that caliber.
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  #7  
Old 02-27-2011, 03:36 PM
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Join Date: Jul 2004
Location: Texas
Posts: 5,614
Re: 7mm SAUM

Quote:
Originally Posted by 30-06 View Post
OK maybe I did not articulate my thoughts very well.
Using the Nosler #6 loading guide (I chose Nolser out of the buffet of manuals available today because Nosler used a 24" Wiseman barrel for both 7mm SAUM and 7mm WSMz).
If you look at 160 gr. bullets IMR 4350 is used in both cartridges (Nosler choose to only include 4 powders in the SUAM data for reasons of their own).
SAUM max velocity is 2917 with 56 gr. IMR 4350
WSM max velocity is 2894 with 57.5 gr. IMR 4350

If you look at the 175 gr partition
SAUM max velocity is 2820 with 59.0 gr. of AA3100
WSM max velocity is 2817 with 61.0 gr. ofAA3100

Again there is limited powder data for this cartridge in the Nosler guide, I chose these powders because they were listed for both cartridges.
If you look at lighter bullets the WSM does have some advantage in velocity but certainly not the heavier bullets.

Loading data can be deceiving and the simple truth lies in case capacity. that was what I was
talking about and not taking sides with one case or another.

The WSM is about .065 thousandths longer in the body and around 6 to 7 grains more case capacity
on average over the SAUM and this does make a difference . Is it enough to buy something
that would be your second choice? absolutely not.

The difference in velocity in factory loads with 160grain bullets is 3160 ft/sec (The highest for
the WSM) and 2960 ft/sec for the SAUM (Also the highest I could find)

Re loaders can get closer together with there velocities and the margin is less.

The same loads in two identical barrels will show differences in velocities and the bullet makers
reloading manual will most always show there bullets have an advantage over the others. also
most reloading manuals are calculated not fired to get velocities so take there results with a
grain of salt.

Like I said Don't get hung up on efficiencies pick the cartridge you like and be happy with it.

J E CUSTOM
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Last edited by J E Custom; 02-27-2011 at 11:54 PM.
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