Home Forums Hunting & Shooting Ask The Gunwriters 6.5 SAUM Hype

I have over ten firings on same 50 brass... Zero issues

I actually just prepped another fifty out of boredom a few weeks back because I am gonna get a heavy rifle built in 6.5 too and start with 50 cases dedicated to it

Looks good!

I am going to try to make it this year, but have a hunt am waiting to hear on between now and April 30.

Any of that 6.5 SAUM brass that hits the ground at the shoot is automatically the property of the shoot sponser.....just so you know....grin!

Gear adrift is gear a-gift...grin.




Travis

. Roger that

Heck some of us don't have that much brass to start with, let alone part with!

So I shouldn't tell ya there is another 500 sitting by my bench then

That goes for .223AI brass too, my friend.

And yes... That group was shot with that MagnetoSpeed hanging off it

Good thing 7 Rem mags are archaic now, I don't have enough brass to give up... Grin.

Tanner

Because you are running at pressures that allow your primer pockets to stay tight. That does not mean you are below 58,000 psi.

Personally I would not get to hung up on exactly where you guys are in regards to pressure. Nothing wrong with 63,000 psi if the barrel life and accuracy holds out.

I don't for a second doubt the reported barrel life or accuracy and that is really the whole point.

A 140gr at 3100 fps is almost obsolete.



Nice shootin Scott.

Good news for this guy! I'm done with AI's. Goin' SAAMI .223 all-da-way...

But I have been buying a lot of Lapua so I'll be keeping an eye out regardless....

You know how you keep a kid from losing brass in the field? Because I don't...



Travis

Geezus will somebody go buy a strain gauge and hook it up?

The suspense on here is killing me!

Exactly.....who cares? Every time I mention this cartridge on here someone calls bullschit.....I'm getting sick of it.

John,

One of my old Hornady manuals (and some other sources I've seen) state that slow burning powders should not be reduced, but used near max charge. I think people were claiming that the rounds could "detonate" but the debate started over "detonation" and how smaller charges could somehow produce enough pressure to blow a barrel/receiver when larger charges don't. Seems that all rounds "detonate" or else we wouldn't have a functional cartridge

Secondary pressure excursion was explained elsewhere as a primer flame front that travels over the top of a partially filled case of slow burning powder. The bullet moves into the rifling but the charge isn't burning in the typical manner. By the time the charge starts burning in a normal fashion, pressures rise rapidly... so fast that the bullet now acts as a fixed obstruction and the receiver/barrel takes the stress.

I didn't know if this "secondary pressure excursion" was a real phenomenon or another gun myth.

In terms of the 6.5 SAUM, I don't doubt the results. Low pressure, but over a longer period of time using slow burning powder. Just that low pressures make me assume that there is low case fill, which made me think of the warnings on slow burning powders.

Jason

Pat,

I personally appreciate how much you have shared with all here and other sites. There is a 6.5 SAUM in my future and I look forward to shooting it enough to "disprove" everything you've written. <grin>

The case holds some 73 grains of water and a 59-62 grain load is a full power load. No worries that it will spload with H1000.

This cartridge looks ideal for hunting as well as target use.

Thanks for sharing the information.

4th point,

That's what I thought you might be referring to, the reason I asked for the explanation.

Those excursions have never been reported with powder charges less than 90% of case capacity. That's the criteria for "reduced" loads with slow powders, not pressure. The charges of H1000 being discussed in the 6.5 SAUM are well above 90%.

+1

I set out a couple of years ago to put together a dedicated antelope rifle so I had Gre'tan rifles put me together a 6.5 X 47L on a rem700. The finished rifle was a little heavy for what I wanted in a hunting rifle so I retired it to practical comps where it has excelled. Since then I have been once again researching the best possible antelope cartridge / rifle combo. This is when I found the threads that Pat and Sendero posted on SH and it did not take long to realize that there was something to the 4S. So I ordered a GAP Non Typical which santa delivered a couple of days before Christmas. I prepped my norma brass and I will soon be wringing it out. ( work has had me very busy ) I expect nothing but performance from this rifle / cartridge. I also bought a LRHS that will go on my lightweight 6.5 creedmoor.

Thanks Pat, Sendero and George!!

Excellent. Thanks for that info on case-fill John.

Jason