Estimating 3000+ fps from 6.5 Swede

[CobraRed]

So pressure for military ammo in mausers would put a proof load 58,760-66k.

Point taken.

My pressures are estimated based on cartridge and load, just like the program is estimating energy and velocity. If you have an easy more accurate way, I'd welcome it.

Im taking into account the bullet being seated much shallower than book and the bullet being seated to lands canceling each other out in decreases and increases in pressure accordingly.

[russ69]

...My pressures are estimated...

The engineer in me requires a certain amount of accuracy in quoting pressure figures. I would feel a lot better if you labeled those values as estimates/calculated/SWAG/derived/predictions. When I read your post I assumed they were measurements. At that point I thought you might be working in the industry, and I was going to exploit your expertise. It was still a good post and I learned more about 6.5s than I knew before you posted, thanx.

[Cypriss32]

Be careful with RL22, I used to use it in my 30-06 and 7wsm rifles. I was getting CRAZY velocities from it. With 162gr AMAX I was pushing 3200 FPS from the 7wsm, and 2989 with 190gr SMKS in my 30-06. When I went from 60 degrees to 90 degrees I was getting CRAZY pressure signs. I steer clear with RL22 because it has terrible temp stability. Its not worth the extra velocity. I have shot A LOT it......

[CobraRed]

The engineer in me requires a certain amount of accuracy in quoting pressure figures. I would feel a lot better if you labeled those values as estimates/calculated/SWAG/derived/predictions. When I read your post I assumed they were measurements. At that point I thought you might be working in the industry, and I was going to exploit your expertise. It was still a good post and I learned more about 6.5s than I knew before you posted, thanx.

I never posted any value
I never posted my load
Including velocity before even referring anything I've said "about" or "almost" or "around."

Not sure how you got scientific impressions from that.

[GJC]

That's awesome

[russ69]

I never posted any value...

...shoot the swede up to the max pressure for 30-06 which is 60k psi, which I am still almost 3 thousand under...

57,000psi, if I did the math right. Am I missing something? What were we talking about?

[CobraRed]

57,000psi, if I did the math right. Am I missing something? What were we talking about?

Like I said. I never posted a value and I said almost.

You're welcome to deduce, doesn't mean I'm throwing around scientific assertions.

[LynnJr]

Alliant had a problem with RE22 several years ago and it was running hotter than RE19.I still have 16 pounds of it and the lot # is 25083.They had a giant red warning about it on there website after several guns bit the dust.

How about some relevant info out of a 26" barrel? My research has found that modern actions can and often do shoot the swede up to the max pressure for 30-06 which is 60k psi, which I am still almost 3 thousand under.

Your case capacity is 52 grains and three of the loads I posted were 51.9 grains.Your own data shows it as 107% or a compressed load and it makes no difference at all if the data was from a Mauser or a BAT action.Pressure is still pressure and it takes pressure to push the bullet to 2950 fps or higher.
My 308 loads were so scary for some here they had them pulled from an earlier thread and my mother shoots them.

[russ69]

...My 308 loads were so scary for some here they had them pulled from an earlier thread and my mother shoots them.

Does your mother wear army boots?

[hambam105]

What color army boots we talking about?

[ARKLITE881South]

I've got a really nice old Krag in 6.5x55, i take it pretty easy on the handloading, but, this thing shoots like you would not believe. I've had some fun telling guys i have a Krag in a 6.5x55.Right off they say, you mean 30/40 Krag, i say,no, 6.5x55, then i have to ''prove it'' its fun to see their face when i show them the rifle.

[jlmurphy]

I have been shooting the 6.5x55 for a long time in many rifles.My current Tactical rifle is a LA Win Model 70 in 6.5x55 with a Krieger 28" barrel, 48 gr. of H4831 gives me 2850 fps., very consistent, very accurate. I used to shoot Re22, and even blew a few primers with that bad lot years ago. The problem is that Re22 is a double based powder and is especially sensitive to temp. swings. The last thing I want in a tactical rifle is large velocity spreads. The Hodgdon Extreme powders are designed to be temp. insensitive, and they are. I can expect my first cold bore shot to go where it should, every time.

[CobraRed]

Finally using a chrono for these loads, thread updated in post #1

[6mmintl]

You cannot send any stable SMK beyond 3000 FPS without risking bullet blowup let alone action issues so its not new news to the LR cowboys.

Im sure a few of the FNG's have unknowingly done it.

[ar15barrels]

You cannot send any stable SMK beyond 3000 FPS without risking bullet blowup let alone action issues so its not new news to the LR cowboys.

I found that 6mm 107 smk's shot stupidly well at 3050fps from my 1:8 twist 28" barrelled 243.