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Originally Posted by SU35
You will supply powder?

NO

Originally Posted by SU35

I thought you were using RL25?

YES RL25. RL22 is also good! Just not as good as RL25 with lighter pills.

Originally Posted by SU35

Sounds like you have a friend who reloads for you.

ha ha ha, NO. I keep it simple with my 338WM these days. 210gr TSX over 76grs of H4831 has the thump I desire in my 7.9lb rifle.










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Originally Posted by SU35
Let me/us know how many grains and I'll run it a QL for you.

Thank you!

You are going to show us something new here.



270Roy first smile

He started(RL25) at 77(3404fps) to 86.5 grains(3797fps).
Standard Weatherby AOL used during these tests but as we know Roys have free-bore galore, which can be very useful!

Once cases become too full(higher loads) they where vibrated down on the side of a tumbler.

Let me know what you come up with.


Cheers


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Not sure why anyone would want a 270wsm when they could have a 7wsm. But to each his own.


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How many grains of powder are you using in the 300 Wby to get over 3,700 fps mv with the 150?

That's the question we have here.

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Originally Posted by SU35
How many grains of powder are you using in the 300 Wby to get over 3,700 fps mv with the 150?

That's the question we have here.


OK.
Here is the original load development.
"96 and 99 gr of re25". 150gn = "3650-3800"


3 of my friends now run these sorta loads. Here is some of the latest data compiled by him.
"101gn Re-25 = 3787 - 3812fps". All .5" at 100(3 shots. Mark V).
WITH NO SIGNS OF A HOT LOAD smile

The secret here is to vibrate em down with your tumbler. Also, as R-25 is a slow burning powder recoil is not like it is with other powders. Rather a push than a sharp jolt.
Just do not try this with heavier pills. If you are using the 270Roy stick with 130's, 300Roy keep it to 150's!

Last edited by 340Wby; 09/10/09.

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bigsqueeze - (sorry for the late reply) - My rebarreled and accurized Kimber in .300 WSM which averages 3150 fps muzzle velocity with 180 gn Barnes TSXs has a 25" barrel.

Your shoulder (and eyebrow if you crawl the stock) feels every bit of those 3150 fps when shooting off the bench. Never noticed the recoil when hunting, though.

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Originally Posted by Shag
Not sure why anyone would want a 270wsm when they could have a 7wsm. But to each his own.


Agreed... but 7mm WSM is sort of dead in the water due to the initial screw-up by Winchester when they rolled it out... for instance, Kimber is not chambering it anymore (I have heard)...


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Originally Posted by shinbone
bigsqueeze - (sorry for the late reply) - My rebarreled and accurized Kimber in .300 WSM which averages 3150 fps muzzle velocity with 180 gn Barnes TSXs has a 25" barrel.

Your shoulder (and eyebrow if you crawl the stock) feels every bit of those 3150 fps when shooting off the bench. Never noticed the recoil when hunting, though.

--shinbone
..........Shinbone!..........For a 300WSM, 3150 fps is good velocity from a 25" barrel, or even from a 26" er using a 180 gr bullet. By chance with some RL17? What`s your powder and charge?

For my 300 WSM, I`m soon going to work up some loadings with 180 grainers using some RL17, which I haven`t done as of yet. Best so far with the 180s has been 2917 fps (max loading). Maybe some RL 17 can boost me to 3000? If so then fine. Although I don`t need that kind of speed, I`ll still be a happy camper with that kind of performance from only a 16.5" barreled compact...grin....It`ll be a "little" noisy along with some good shoulder stimulating recoil, which I like.



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OK.
Here is the original load development.
"96 and 99 gr of re25". 150gn = "3650-3800"


I ran this QL the other night, here is what it gave me.

300 Wby
150 grain bullet
RL 25 98.0 grains for 3,704 mv

76,469 psi

Yeah, your smokin alright. I not sure which is more dangerous.

Let's just say I would not want to shoot to next to you.


150 grain bullet
RL25 94.0 grains for 3,453 mv

psi 65,246

Max in book


Last edited by SU35; 09/11/09.
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Originally Posted by SU35
Quote
OK.
Here is the original load development.
"96 and 99 gr of re25". 150gn = "3650-3800"


I ran this QL the other night, here is what it gave me.

300 Wby
150 grain bullet
RL 25 98.0 grains for 3,704 mv

76,469 psi

Yeah, your smokin alright. I not sure which is more dangerous.

Let's just say I would not want to shoot to next to you.


150 grain bullet
RL25 94.0 grains for 3,453 mv

psi 65,246

Max in book



ha ha ha still with the comments.

You would not have to worry about me 35. Like I said, I do not have these 2 cals. I'm a 338WM man at heart, with a 210gr TSX at around 2950fps plenty for my business!

I do know at least 3 that use these loads in their Mark V's, have done for a while now. One of which is a very experienced handloader, the others also know their stuff!

You might also want to look into how pressures are measured? Your program might say that but is that the actual pressure?
Why have they fired hundreds of rounds between em & nothing? Luck? Mark V strength? Or just a thorough knowledge of ballistics?
Study some more!

Last edited by 340Wby; 09/11/09.

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I do know at least 3 that use these loads in their Mark V's, have done for a while now. One of which is a very experienced handloader, the others also know their stuff!


Oh I am sure they are! We all know our stuff!


Quote
You might also want to look into how pressures are measured? Your program might say that but is that the actual pressure?


I ran it default but I'll be my bottom buck it's within a couple 1000 psi or so.
If they want to play at near 80K psi have it it. I could care less.

Quote
Why have they fired hundreds of rounds between em & nothing? Luck? Mark V strength? Or just a thorough knowledge of ballistics?


Just load the 6 round cylinder with one round and spin it, see, it didn't get you. Do it again and keep doing it.
The more you do it the more Knowledgeable experience you have.


Quote
Study some more!


Oh I have alright and I'll do my best to stay at under 65k.











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SU35

I was also sceptical when I heard about these figures from a 300wby. I have seen these loads myself over a chrony about 2 months ago.

I started playing with Rel25 & 150gn Speers myself.

Being cautious with my handloading I started at 95.0 grains rel 25 and worked up to 97gns - just out of curiousity.

My results were 95.0gns/3520fps, 96.0/3560, 97.0gns/3620fps average over a 3 shot group.

I left it at that - mainly because for what I want I do not personally have a use for a 150gn projectile at these sort of velocities.

I have been handloading for 15 years - long enough to know conventional pressure signs when I see them. There were none. I miked my cases (once fired), there was no sticky bolt lift, marks on cases or anything like that. In fact the case necks were still sooty.

The groups from my rifle were not particularly good - and I got the impression that maybe another grain or 2 would have tightened the groups considerably - something that is normal for the Roy rounds when they are not producing enough pressure.

I have not bothered with it anymore as I still think the 300 does its best work with a 180 projectile.

These loads that 340wby talks of have been tested across about 4 different rifles all with very similar results.

Not suggesting that anyone should attempt them - but with Reloader 25 and a 150grain projectile ONLY, this combination would appear to produce exceptional velocities without any normal signs of pressure in the 300Wby.

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Good points mig,

I do know it has been discussed here quite often that
classic pressure signs are really unreliable to give you
an accurate indicator of what your loads are really doing.
Sometimes you can have flattened primers and sticky bolt lift and be under Saami pressures.

I'm into my 40th year reloading now to know this is true.

I love to hot rod rounds and I've poured enough kegs of RL25 in enough brass to know the stuff can really work and give you high speed without the indicators.
Miked case are totally unreliable btw.

I look at the reloading guides and look for speed that I can match not go over.

I don't think you'll find 3,700 fps mv for a 300 WBY/150 in any of the them. No, I don't think it's because they want to be lawyer proof either.






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Originally Posted by 340Wby

270Roy first smile

He started(RL25) at 77(3404fps) to 86.5 grains(3797fps).
Standard Weatherby AOL used during these tests but as we know Roys have free-bore galore, which can be very useful!

Once cases become too full(higher loads) they where vibrated down on the side of a tumbler.



Originally Posted by 340Wby

OK.
Here is the original load development.
"96 and 99 gr of re25". 150gn = "3650-3800"

3 of my friends now run these sorta loads. Here is some of the latest data compiled by him.
"101gn Re-25 = 3787 - 3812fps". All .5" at 100(3 shots. Mark V).
WITH NO SIGNS OF A HOT LOAD smile

The secret here is to vibrate em down with your tumbler.

Those sure seem pretty hot to me. The Alliant max for the 270 Weatherby with RL25 and a 130 is 72 grns, at 86.5 those loads are 14.5 grains over their max! In the 300 and RL 25 with 150's, Lyman lists 91.0 grns as max and those loads you list start at 5 grains over their max, going up to 10! And using a tumbler to settle the powder? Doesn't that affect the burn rate (geometry?) of the powder?

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