Home Forums Hunting & Shooting Long Range Hunting The Big 7's......Which One?

Joe there is some outfit making new high BC bullets in 270 cal...I can't recall the name but they may be worth looking at for your Allen mag.Someone here will recall the name...

Yep there is. But the 195 wildcat bullet made the 270 Allen rock.

Here is the link to a place making high BC bullets for the 270. Don't how well they will shoot.
http://www.matrixballistics.com/.277-Caliber-rifle-bullets.html

joe thanks. Yes matrix is the one I was thinking of...

Soooooooo...no love for the 7MM SAUM...

I guess I'll just have to take it upon myself to build one, and make a believer out of yous guys, eh?

Let's see...160 AccuBombs, or 168 VLD's at 2,900-3,000, with 60 grains of powder. What does Larry The Cable Guy say?

...and barrel life to boot.

That's one of the reason's I kept my .270 and sold my shorty 7. I could do 2950 with a 160 in the shorty 7 and my .270 with 150 Nozlers will run 2950...

Dober

That's leaning pretty hard on the .270, but not the 7 WSM. Just sayin'.

Not in my experience Jeff, have had good case life (primer pockets tight). My last 2 barrels were cut at 23" both were Lilja's and with 57 of R22 both would go there just fine.

What kind of .270 tubes have you worked with and what did you find for speeds?

And in my One 7 WSM Montana 3K was top end and then some with the 160...

Dober

Bob:

Interesting where you have ended up. My 3 are .22-250 AI, 6.5 Rem Mag, Mashburn, .375 Ruger.

There are some valid reasons for the Mashburn over the Remington.

None other than Jeff Cooper wrote that the Big 7 needs to drive a 160 at 3150. Page and Hagel as well as George Hoffman praised the 175 Partition at 3000. Some 7 RM's will come close but not all will reliably do so. That level of performance is necessary, in many minds, to make it a worthwhile step up from the 270 Win.

You need to use every trick known and then be willing to lean on the 7 RM pretty hard to reach those levels and even then not all will do it. The Mashburn lovers tell us they can do this with predicatability and without extreme pressures. Now whether the added performance makes any field difference compared to the 7 RM or the 270 Win is question that has no answer.

Jeff,
What is your experience with the 270 and custom barrels using 150 bullets? I have been getting 2955 with IMR 7828ssc and 150 CTBS. The charge is 1.0 grain less than I have seen in print. 22.75" Bartlien

I have decided to stick with the 270 Win over all the big 7's. For my use it is plenty.

Your right Rick in that 7828 is another excellent choice with the .270. I've mainly used 140's and 150's with it. Thinking that R25 may well work as well, though not sure if I ever worked with it.

And George did think well of the Big 7's and 175's @ 3K, smart man.

The main diff to me tween the .270 and the Mashburn is when ranges go from 400 on out. To me the Big 7 has a faster "QDQ". They don't get any deader or course but the "QDQ" is nice when one is something I like. And, as all know that "QDQ" stands for Quicker Death Quotiant"............grin

I see lots of quick knockouts with the .270 (lung hits) sub 400 or so. But, when one goes longer say 400-650 the Big 7 is the speed demon when it comes to fast knock downs. Once again, this is without breaking bone as I've pretty much been a arm pit shooter all my life.

Dober

Yukonal, the 7mm SAUM is getting some good loving over at 6mmbr.com

check out the article on the SAUM here:

http://www.accurateshooter.com/cartridge-guides/7mm/#7SAUM

I think you will like what you read...the velocities are truly impressive, although he is using a 30" krieger barrel...

still, if i wanted to set up a 7SAUM, i would start with the recommendations found there.

Yep,

That's where I get most of my brilliant ideas.

There seems to be alot of-or some-concern about getting the seated bullet up to the base of-or into-the neck, and still load to mag length in a short action.

Once all that gets straightened out, the rest is gravy. I think there are plenty of reamers that are pretty close-available.

I need a dope slap <whap>.... bad Jeff, bad bad bad.

I've never loaded for a .270.

I just glanced at factory load speeds (2830 fps).

I shouldn't have said anything about .270. Can I blame the noggin? Having kind of a bad symptom day in that regard.



With my mea culpa out of the way, I'll say (from experience) that 2950 fps/160's is not "representative" of 160's in the handloaded 7 WSM.

I'm sure .270 is the muffins. Not intending to impugn it in any way. Just standing up for my man the 7 WSM....

Gonna see if beer cures my brain tonight. Found myself wandering the aisles at the hardware store today aimlessly- haven't had that happen in a few weeks. Aargh.

Al there are LOTS of good cartridges and choosing makes a guys head spin. The thing is they all work and a guy can hardly go wrong....I have danced around the cartridge flag pole a LOT over the years,but anymore I can barely keep up with them all, so have really narrowed down lately.I look back and what has seen the most action has been the 270,a magnum 7mm,the 30/06,and a 300 Magnum of some sort.....the 375H&H and today the Ruger are special and stand alone IMHO.

There are what I call the generic 7mm's and these all do 2900-3200 with 140 gr bullets and 2850-3000 with 160's.....but when it comes to moving the heavy 175's over 3000 fps,consistently,at pressure I can live with from a 24" tube,and without a lot of trick moves and from a variety of rifles,the field gets pretty narrow....among them I picked the Mashburn.

I had a hankering to try the Mashburn and it has delivered....heavy or lightweight bullets.Does not matter...they ALL go plenty fast.I like the velocity levels of the cartridge cause I tend to hunt with pretty tough bullets,and the magnums just open them up good at distance.

No doubt that SAUM will have more barrel life but for me, two things in life are expendable.....rifle barrels and bass jigs My pal pours the jigs and I always have two spare barrels sitting around home ....I don't wait for barrels when the time comes to replace them.Both are the cost of doing business.

Doc all those are good choices of course and underscores what I have long believed and that is that there is much overlap among cartridges today.....it is pretty clear that those 6.5's can be made to trump a 270 with the highest BC bullets...but for me I am superstitious and very much believe in "lucky" rifles and cartridges,and that is why I could just never live without a 270 or a 375H&H

It is interesting but little known that Warren Page thought the Mashburn was too much and far too powerful to be used on deer sized stuff...to him the Mashburn was a real world wide BIG GAME cartridge...filling the niche of a 300 Weatherby with less recoil, and a lighter rifle,for a world traveling hunter.

For deer sized stuff he felt the 270 Winchester was best for the average Joe;but he himself hunted mule deer with a 6.5 on the 30/06 Ackley Improved kind of case...that guy was always thinking!

I have known for a long time that Warren used the Mashburn as a cheater .300 Weatherby. He let the 175's sectional density and reasonable recoil with a reasonable weight gun (8 lb.) do the work rather than the use a 200 gr. and heavier gun and recoil.

I have an article of his somewhere that extols the virtues of the .270 as the perfect western mule deer rifle. I just like the sectional density of the 130 gr. 6.5's driven at 3,200 vs the .270. It is sort of a Page thing.

Warren was a very crafty dude!!!!

In my newest SCI magazine, a 15 yr old girl's father took her hunting up nort' on an outfitted hunt. She killed a mountain goat, a bull moose, and a grizzly by herself.



With a .260.



Just sayin...



...

why is it that Nosler only loads their 130 grain accubond to 3100 fps in the 264 winmag? seems to me the cartridge is capable of doing better than that? their load data shows a max 0f 3053 in a 24 inch tube, but the powder choices aren't the slowest available... i think the 264 would sell a heck of a lot better if the factories optimized a 130 grainer for mojo speed in a 24 inch barrel...

Well.....sure!