RS62 Burn Rate

[User00033]

@Tom D... technically as a Creedmoor owner, I'm not laughing.... but....

 

[User00033]

Dodgy you are on fire this morning!

I was trying to be polite but I think your slightly more direct approach is likely to be a bit more effective.

He won't take the blindest bit of notice Nigel.

Anyway, moving on... If you get the chance to try some RL 26, I would be very interested to see how you go. I am very impressed with what Danny has achieved with his .270 after switching to the slower powder recently. Yes it is up there in terms of pressure but again the hunting rifle lifespan is a long one as it doesn't get used for anything other than the odd sighting shot and a couple at the target species on the hill.

 

[NigelM]

He won't take the blindest bit of notice Nigel.

Anyway, moving on... If you get the chance to try some RL 26, I would be very interested to see how you go. I am very impressed with what Danny has achieved with his .270 after switching to the slower powder recently. Yes it is up there in terms of pressure but again the hunting rifle lifespan is a long one as it doesn't get used for anything other than the odd sighting shot and a couple at the target species on the hill.

I'm got a tub upstairs that I was playing with years ago with the 7mmRM. Never could get it to shoot. Unfortunately it's too slow for 6.5x47 and 7mm08 so I've got nothing to try it with. Would be interested to hear how Danny gets on with temperature sensitivity. All the RL powders I have used have been very temperature sensitive, especially 15 & 17.

 

[CarlW]

So... let me me try and understand your train of thought. You said in #55 "High BC bullets is what you want not “heavy", Lol".

Hilarious, clearly.

The 130gr ABLR has a quoted G1 BC of 0.435.
The 145gr ELD-X has a quoted G1 BC of 0.536.

Hmmm.

I dropped my mate Danny a line, I said hey Danny how fast are you pushing those 145s? Awww, 3130fps thereabouts Dave.

So lets look at the difference here. Danny's using RL26, Nigel is using RS62. Let's assume both rifles are zeroed at 200yds.

At 300yds in a 10mph crosswind, the numbers are:

Danny: path to line of sight -5.2", windage -4.6"
Nigel: path to line of sight -6.0", windage -5.0"

@Slickshot's magical 130gr Accubond at 3100fps: path to line of sight -6.2", windage -5.8"

Hmmm, I say, in my best Yoda voice.

As a hunting round, would you like to know how much more energy the 145gr ELD-X has over the 130gr Accubond? Nigel's is +6% and Danny's is +19%. Ouch.

In post #46, you make some claims about stability and the shocking capabilities of both a .277 and a 6.5mm 130gr bullet at range. Let's look at that for a moment, at 600yds.

Nigel's 270 & 145gr ELD-X @ 2900fps: path to line of sight -66.6", windage -22"

Random 6.5 CM & 130gr ELD-M @ 2950fps: path to line of sight -64.1", windage -21.2"
@Slickshot's magical 130gr Accubond at 3100fps: path to line of sight -63", windage -26.2"

Oh. I'm not shocked. Actually, what was it I was supposed to be shocked about?

By the way, Danny's faster ELD-X poops on the Creedmoor numbers... -56.7" and -20.1". Splat!

Regarding stability. The Miller value for the 145gr ELD-X in a standard .270 Winchester 1:10" twist barrel is between 1.561 - 1.596 depending on velocity. This exceeds MilSpec stability requirements for long range shooting by up to 0.1. I'm not going to assume you know the difference between gyroscopic stability and dynamic stability, as nothing you've posted so far is credible, suffice to say that as long as a bullet starts with gyroscopic stability (Sg), it will maintain stability as Sg decays a lot slower than velocity. However some bullets are affected by a significant loss of dynamic stability (Sd) as velocity drops into transonic speeds, around 1300fps. Considering this equates to a range of 1150yds, I'd say that he hasn't got too much to worry about, if it happens at all.

So now I've finished being a little girl, hopefully your deeply buried inner good-bloke will be allowed to surface, and he'll agree he really must stop chickening out and allowing peckerhead to run the show.

As a final comment, I would like to point out to one of our other contributors that the above is a good example of why Quickload is so useful. It allows data driven analysis and informed decisions, rather than plucking nonsense from the dark recesses of our rear ends.

I learned a lot from that. Thank you, Dodgy.

 

[User00033]

I was under the impression RL26 is one of their temperature controlled products. Alliant claims "Controlled temperature stability" on the website. I will ask around at this end. What I do know about this particular 270 I've been talking about today is that Danny pretty much only uses it as a Roar rifle once a year, the rest of the time he uses an old BLR .308 as he's primarily a pig hunter who picks up the odd deer here and there on his travels. So I'll take a guess before I ask him and say it probably only gets used in early autumn conditions.

 

[swarovski]

It's a great powder for 6.5x47,I run 2 different bullets on it with great accuracy,if you want the extra uumph RS60

 

[NigelM]

It's a great powder for 6.5x47,I run 2 different bullets on it with great accuracy,if you want the extra uumph RS60

Are you talking about RS62 or RL26?

 

[Slickshot]

So... let me me try and understand your train of thought. You said in #55 "High BC bullets is what you want not “heavy", Lol".

Hilarious, clearly.

The 130gr ABLR has a quoted G1 BC of 0.435.
The 145gr ELD-X has a quoted G1 BC of 0.536.

Hmmm.

I dropped my mate Danny a line, I said hey Danny how fast are you pushing those 145s? Awww, 3130fps thereabouts Dave.

So lets look at the difference here. Danny's using RL26, Nigel is using RS62. Let's assume both rifles are zeroed at 200yds.

At 300yds in a 10mph crosswind, the numbers are:

Danny: path to line of sight -5.2", windage -4.6"
Nigel: path to line of sight -6.0", windage -5.0"

@Slickshot's magical 130gr Accubond at 3100fps: path to line of sight -6.2", windage -5.8"

Hmmm, I say, in my best Yoda voice.

As a hunting round, would you like to know how much more energy the 145gr ELD-X has over the 130gr Accubond? Nigel's is +6% and Danny's is +19%. Ouch.

In post #46, you make some claims about stability and the shocking capabilities of both a .277 and a 6.5mm 130gr bullet at range. Let's look at that for a moment, at 600yds.

Nigel's 270 & 145gr ELD-X @ 2900fps: path to line of sight -66.6", windage -22"

Random 6.5 CM & 130gr ELD-M @ 2950fps: path to line of sight -64.1", windage -21.2"
@Slickshot's magical 130gr Accubond at 3100fps: path to line of sight -63", windage -26.2"

Oh. I'm not shocked. Actually, what was it I was supposed to be shocked about?

By the way, Danny's faster ELD-X poops on the Creedmoor numbers... -56.7" and -20.1". Splat!

Regarding stability. The Miller value for the 145gr ELD-X in a standard .270 Winchester 1:10" twist barrel is between 1.561 - 1.596 depending on velocity. This exceeds MilSpec stability requirements for long range shooting by up to 0.1. I'm not going to assume you know the difference between gyroscopic stability and dynamic stability, as nothing you've posted so far is credible, suffice to say that as long as a bullet starts with gyroscopic stability (Sg), it will maintain stability as Sg decays a lot slower than velocity. However some bullets are affected by a significant loss of dynamic stability (Sd) as velocity drops into transonic speeds, around 1300fps. Considering this equates to a range of 1150yds, I'd say that he hasn't got too much to worry about, if it happens at all.

So now I've finished being a little girl, hopefully your deeply buried inner good-bloke will be allowed to surface, and he'll agree he really must stop chickening out and allowing peckerhead to run the show.

As a final comment, I would like to point out to one of our other contributors that the above is a good example of why Quickload is so useful. It allows data driven analysis and informed decisions, rather than plucking nonsense from the dark recesses of our rear ends.

So... let me me try and understand your train of thought. You said in #55 "High BC bullets is what you want not “heavy", Lol".

Hilarious, clearly.

The 130gr ABLR has a quoted G1 BC of 0.435.
The 145gr ELD-X has a quoted G1 BC of 0.536.

Hmmm.

I dropped my mate Danny a line, I said hey Danny how fast are you pushing those 145s? Awww, 3130fps thereabouts Dave.

So lets look at the difference here. Danny's using RL26, Nigel is using RS62. Let's assume both rifles are zeroed at 200yds.

At 300yds in a 10mph crosswind, the numbers are:

Danny: path to line of sight -5.2", windage -4.6"
Nigel: path to line of sight -6.0", windage -5.0"

@Slickshot's magical 130gr Accubond at 3100fps: path to line of sight -6.2", windage -5.8"

Hmmm, I say, in my best Yoda voice.

As a hunting round, would you like to know how much more energy the 145gr ELD-X has over the 130gr Accubond? Nigel's is +6% and Danny's is +19%. Ouch.

In post #46, you make some claims about stability and the shocking capabilities of both a .277 and a 6.5mm 130gr bullet at range. Let's look at that for a moment, at 600yds.

Nigel's 270 & 145gr ELD-X @ 2900fps: path to line of sight -66.6", windage -22"

Random 6.5 CM & 130gr ELD-M @ 2950fps: path to line of sight -64.1", windage -21.2"
@Slickshot's magical 130gr Accubond at 3100fps: path to line of sight -63", windage -26.2"

Oh. I'm not shocked. Actually, what was it I was supposed to be shocked about?

By the way, Danny's faster ELD-X poops on the Creedmoor numbers... -56.7" and -20.1". Splat!

Regarding stability. The Miller value for the 145gr ELD-X in a standard .270 Winchester 1:10" twist barrel is between 1.561 - 1.596 depending on velocity. This exceeds MilSpec stability requirements for long range shooting by up to 0.1. I'm not going to assume you know the difference between gyroscopic stability and dynamic stability, as nothing you've posted so far is credible, suffice to say that as long as a bullet starts with gyroscopic stability (Sg), it will maintain stability as Sg decays a lot slower than velocity. However some bullets are affected by a significant loss of dynamic stability (Sd) as velocity drops into transonic speeds, around 1300fps. Considering this equates to a range of 1150yds, I'd say that he hasn't got too much to worry about, if it happens at all.

So now I've finished being a little girl, hopefully your deeply buried inner good-bloke will be allowed to surface, and he'll agree he really must stop chickening out and allowing peckerhead to run the show.

As a final comment, I would like to point out to one of our other contributors that the above is a good example of why Quickload is so useful. It allows data driven analysis and informed decisions, rather than plucking nonsense from the dark recesses of our rear ends.

Shocking figures. Buy a 6.5 creedmoor.

Mines shooting a 147 ELD-M @ 2880 FPS with a BC of .697

300 yards with full value 10mph wind

Windage 4.1” drift
Elevation 6.8” drop
Energy 2017 ft lbs

600 yards

Windage 17.3”
Elevation 62.5”
Energy 1499 ft lbs

Transonic

1500 yards @ the 1300 FPS figure

Less recoil, better barrel life, cheaper to shoot, more accurate, better ballistics!!!!


Double splat

 

[swarovski]

Are you talking about RS62 or RL26?

RS62

 

[User00033]

@Slickshot! You're back for another round! Good on yer.

But look, what is this? A heavy for calibre 6.5mm bullet! Funny that. That's what I would have picked if I was trying to win a pointless argument. Actually I would have chosen the 7mm 195gr Berger EOL.

But I am glad you took notice after all, good, I'm glad you learnt something.

Problem is, Nigel's mate doesn't have a Creedmoor, does he. He has a .270 Win.

One thing for sure, if you're pushing a 147gr ELD-M at nearly 2900fps, you sure as hell ain't gonna get good barrel life. Those numbers you posted, they are hot enough for me to say that I've got my dowts. You'll have to prove it for me to believe it, so lets start with all the load details please, powder, COAL, water capacity, barrel length...

 

[NigelM]

@Slickshot! You're back for another round! Good on yer.

But look, what is this? A heavy for calibre 6.5mm bullet! Funny that. That's what I would have picked if I was trying to win a pointless argument. Actually I would have chosen the 7mm 195gr Berger EOL.

But I am glad you took notice after all, good, I'm glad you learnt something.

Problem is, Nigel's mate doesn't have a Creedmoor, does he. He has a .270 Win.

One thing for sure, if you're pushing a 147gr ELD-M at nearly 2900fps, you sure as hell ain't gonna get good barrel life. Those numbers you posted, they are hot enough for me to say that I've got my dowts. You'll have to prove it for me to believe it, so lets start with all the load details please, powder, COAL, water capacity, barrel length...

Hornady max load runs 2650 fps on the 147. Would be interesting to model 2880 in QL but without the data we can't do it. It's got to be right up there. As you say, barrel life is not going to be impressive and I wouldn't want to take it out on a hot day!

I ran the old 6.5x47 pretty hot, just over 60k psi and the 129 ABLR's liked 2910 fps. Could go faster without pressure signs but it wasn't accurate enough. I lost 140 thou of throat in 800 rounds. Older and wiser I have now backed off!

 

[Slickshot]

@Slickshot! You're back for another round! Good on yer.

But look, what is this? A heavy for calibre 6.5mm bullet! Funny that. That's what I would have picked if I was trying to win a pointless argument. Actually I would have chosen the 7mm 195gr Berger EOL.

But I am glad you took notice after all, good, I'm glad you learnt something.

Problem is, Nigel's mate doesn't have a Creedmoor, does he. He has a .270 Win.

One thing for sure, if you're pushing a 147gr ELD-M at nearly 2900fps, you sure as hell ain't gonna get good barrel life. Those numbers you posted, they are hot enough for me to say that I've got my dowts. You'll have to prove it for me to believe it, so lets start with all the load details please, powder, COAL, water capacity, barrel length...

Bartlein 28”
44.6gr RS62
Lapua brass
Cci 450 magnum S/R primmer
147 ELD-M
2.280” ogive

Get you head out that book, this is my figures which are real world & trued.

Compressed load with zero pressure signs.

****es over them 145 ELD-X

 

[User00033]

Double good on yer!

Now I'm so impressed with that, I'm going to rush out and buy a 28" barrel for my next hunting rifle. Twenty Eight Inches. Wow.

I said to my wife who's a keen shooter, I said this guy's gonna come back with a Benchrest spec. Wasn't too far wrong was I!

While we're at it, why not pop over the the Short Barrels thread and add some wisdom there too?

So now..... drum roll.... be prepared to Eat My Shorts.... my next rifle spec will be..... 28 Nosler shooting 195gr Berger EOL Extreme Hunter, at 3150fps! Which will comprehensively beat our friend's .270, your Creedmoor, my Creedmoor, in fact it will effortlessly defeat just about all the rifles owned by forum members. Without even breaking a sweat. Hah! Hopeless barrel life, a complete indulgence, illogical, a safe queen and something to make me think my hair has grown back and my willy has grown a bit. There, at least I'm being honest I suppose. None of which is even remotely relevant to this thread.

 

[Slickshot]

Double good on yer!

Now I'm so impressed with that, I'm going to rush out and buy a 28" barrel for my next hunting rifle. Twenty Eight Inches. Wow.

I said to my wife who's a keen shooter, I said this guy's gonna come back with a Benchrest spec. Wasn't too far wrong was I!

While we're at it, why not pop over the the Short Barrels thread and add some wisdom there too?

So now..... drum roll.... be prepared to Eat My Shorts.... my next rifle spec will be..... 28 Nosler shooting 195gr Berger EOL Extreme Hunter, at 3150fps! Which will comprehensively beat our friend's .270, your Creedmoor, my Creedmoor, in fact it will effortlessly defeat just about all the rifles owned by forum members. Without even breaking a sweat. Hah! Hopeless barrel life, a complete indulgence, illogical, a safe queen and something to make me think my hair has grown back and my willy has grown a bit. There, at least I'm being honest I suppose. None of which is even remotely relevant to this thread.

From your response I take it I won ha.. it’s an AI AT which I stalk with & do my long range work..

Triple splat

Anyways I’m off

 

[User00033]

Of course it is... had to be.... refer to @Tom D's first photo in post #59!

Cor... 13lb with empty magazine, no scope, a 24” barrel, no muzzle brake....

Great choice for a stalking rifle mate. I'd also have a woody if I was carrying that around all day. And arms like Popeye. Do you stalk in a ghillie suit?

 

[Slickshot]

Of course it is... had to be.... refer to @Tom D's first photo in post #59!

Cor... 13lb with empty magazine, no scope, a 24” barrel, no muzzle brake....

Great choice for a stalking rifle mate. I'd also have a woody if I was carrying that around all day. And arms like Popeye. Do you stalk in a ghillie suit?

Good tab gear biathlon sling & your sorted.

My blaser R8 270 & 6.5x284 are better choices but I love my setup. Good long range data too.

 

[Slickshot]

One from last nights outing

 

[swarovski]

@Slickshot! You're back for another round! Good on yer.

But look, what is this? A heavy for calibre 6.5mm bullet! Funny that. That's what I would have picked if I was trying to win a pointless argument. Actually I would have chosen the 7mm 195gr Berger EOL.

But I am glad you took notice after all, good, I'm glad you learnt something.

Problem is, Nigel's mate doesn't have a Creedmoor, does he. He has a .270 Win.

One thing for sure, if you're pushing a 147gr ELD-M at nearly 2900fps, you sure as hell ain't gonna get good barrel life. Those numbers you posted, they are hot enough for me to say that I've got my dowts. You'll have to prove it for me to believe it, so lets start with all the load details please, powder, COAL, water capacity, barrel length...

RS60and a long barrel would do it,a club shooter I know uses a 6.5x284 with the 147 grainers and pushes them way faster with a long barrel

 

[The deer man]

One from last nights outing

Thought lamping deer at midnight was illegal?!

 

[The deer man]

That's really odd! I started with R15 which I have always used in the 6.5 Lapua and couldn't get it to shoot. I went to RS60 and it is very accurate with good velocities, 2740 fps with a 150 ABLR. Now about to try RS62 in a bid to get away from double base powders.

Exactly why I tried RS62 to get away from double base powders and R15. However, my latest attempt at finding the perfect round known to man is again with RS62 in the 7mm-08. Tomorrow I find out......?