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RL17 / 30-06 / 200 gr Accubond

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/09/2010 at 19:46
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Want to hit 2700 fps so I am going to keep going 54.5 gr, 55 gr & 55.5 gr
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/09/2010 at 20:10
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how was 54gr slower than 53.5??
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/09/2010 at 21:49
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Hey pyro

Don't know.  The velocity was not changing much which tells me I have a ways to go before max in this rifle.  When the velocity is not changing much then IME the averages can go back on forth, especially with only 3 shot groups.
 
Also I have noticed that with the RL powders the standard deviations will stabilize when you get closer to max and the groups generally get better.  At least that is what has happened with RL22 and RL25.
 
This is the list of the velocities
 
52.5 grs - 2609, 2629, 2609, 2614
53.0 grs - 2619, 2609, 2624
53.5 grs - 2645, 2656, 2661
54.0 grs - 2640, 2656, 2650
 
 


Edited by sakomato - February/09/2010 at 21:54
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/09/2010 at 22:19
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interesting info bob. what kind of poi and velo. changes do you see when the temps get below 32 degrees with the rl-22 and rl-25?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/09/2010 at 23:03
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Originally posted by pyro6999 pyro6999 wrote:

interesting info bob. what kind of poi and velo. changes do you see when the temps get below 32 degrees with the rl-22 and rl-25?
 
Who the hell would want to hunt when it's freezing!!  Roll Eyes
 
I can remember a couple of times when it might have been close to freezing when I shot something but I neglected to set the chrony up before the shot. 
 
And I definitely don't go to the range when it's freezing.  Since before this year there was only a couple of times in the last 7 or 8 years when it got down that low, there are not a lot of opportunities to test velocities at the range.  The above range session at 48 degrees was really a cold day for me.
 
Might go Saturday afternoon and it is supposed to be in the 40's again!  Brrrrrrr!
 
The last Elk I shot was with a 180 TSX at 253 yards and it was probably about 45 degrees and I hit exactly where I aimed.  Did shoot a Mule Deer about 10 years ago and it was 10 degrees but that was with factory ammo.
 
I have heard that the RL powders were temperature sensitive but I and many others have not been able to verify that.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/10/2010 at 14:38
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some of us hunt exclusively in cold weather. ive also been reading some info on other sites talking about how rl-22 is very sensitive to extreme temps, above 90 and below 32 degrees is where the issues occur.i could easily run some sort of experiment myself but i dont have chrono.  put that on my list of stuff to buy some day.


Edited by pyro6999 - February/10/2010 at 14:39
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/10/2010 at 14:47
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You can hunt when it is above freezing? Huh, going to have to try that.

Nice work.  Not bad groups for 200yrd.  How far are you off the lands?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/10/2010 at 19:46
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Originally posted by SD Dog SD Dog wrote:

You can hunt when it is above freezing? Huh, going to have to try that.

Nice work.  Not bad groups for 200yrd.  How far are you off the lands?
 
These are .030" off the lands
 
I use a lot of RL powders and have noticed no temperature sensitivity that I don't also notice in others.  The only time temperature sensitivity is a problem with me is if I shoot when it is too hot and I do avoid that.  All powders will cause increased pressure you shooting 100* temps or leave the cases out in the sun.  In those temps it doesn't matter if you are using IMR, Hodgdon or RL powders you best not be shooting max loads.
 
IMO there is more effect from elevation change than there is from temperature.  For example if I develop a load in my 300 win mag down here in warmer temps but take the rifle Elk hunting at 8000 ft elevation and cold temps, the decreased velocity will be offset by the decreased drop in trajectory from the elevation.
 
 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/10/2010 at 22:25
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That was some nice shootin', Tex. Funny, I was thinking of hitting the range Friday because it's supposed to be in the mid-30s and only a 30% chance of snow showers.

I agree that altitude changes effect drops more than temperature changes, at least with powders like Varget. I have occasionally seen muzzle velocity drops though when shooting below 25F. I rarely see increases because during the summer I try to shoot early in the day at around 6000 feet so it's usually in the 50s-60s. I do that because I don't want to be too far off the range of hunting temperatures here in the fall (0-60F). So sometimes it seems like the temperature drop can cancel out elevation gain.

Has anyone tried the IMR 8208 XBR yet? I was thinking of giving it a try even though the velocities in .308 are lower than Varget. That's not a huge concern to me. Supposedly it's even less temp sensitive and meters really well.


Edited by jonoMT - February/10/2010 at 22:28
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/13/2010 at 11:10
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Good to see some results with the RL-17.  I have a bunch of 270 Win ammo loaded with 17 but haven't got to shoot yet.

I hunt a lot in cold temps are temps that go from 10 in the morning to 40 in the afternoon.  I honestly have not seen that much change.  But I don't sit at a bench to measure the difference.  I hit the animal where I want to and that is what matters.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/13/2010 at 18:27
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You're right helo, the accuracy I get with the RL powders and the confidence I get from that more than makes up for any slight velocity loss, if it is there.  IMO it would happen with any other powder also and the "extreme condition" powder is marketing hype.
 
Mayber others don't use magnum primers with the RL's and that makes a difference, who knows?


Edited by sakomato - February/13/2010 at 18:27
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/13/2010 at 18:35
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I don't have my 270 loaded with magnum primers.  Maybe I should load a batch with magnum primers to test side be side and see what the difference is.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/13/2010 at 20:25
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Originally posted by sakomato sakomato wrote:

You're right helo, the accuracy I get with the RL powders and the confidence I get from that more than makes up for any slight velocity loss, if it is there.  IMO it would happen with any other powder also and the "extreme condition" powder is marketing hype.
 
Mayber others don't use magnum primers with the RL's and that makes a difference, who knows?

i beg to differ there but what do i know i only hunt in temps below zero.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/13/2010 at 20:45
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So do I Hunter. All I am saying is that at the typical distances shooting while hunting, there isn't enough difference to worry about. Now that would be different if you were target shooting or very long shots. I have noticed much more difference based on altitude than on temp.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/14/2010 at 10:30
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Originally posted by helo18 helo18 wrote:

So do I Hunter. All I am saying is that at the typical distances shooting while hunting, there isn't enough difference to worry about. Now that would be different if you were target shooting or very long shots. I have noticed much more difference based on altitude than on temp.
no disagreement between you and i sorry.
im not worried so much about poi shift or even loss of velocity, the pressure spikes can be extreme with rl-22 in sub zero temps, i use magnum primers in everything i shoot except my 22-250 and im tempted to start doing so with it as well. ive got some stuff loaded up for my .300wby, some are extreme series powders some arent. i will try to get out and shoot them thursday afternoon, if i remember i will bring my camera, if not i will scan targets. have to see if my buddy will set up his chrono. i dont have enough .300wby brass to load up the rl-22 and rl-19 so i will do those in the next set, and we will see then. its supposed to be in the mid 20s here next week so that should be cold enough.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/14/2010 at 12:44
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Hey pyro, I would think that with colder temperatures then you would have a reduction in pressure in cold temps, not pressure spikes.  The only caveat to that would be if you were on the lower end of the pressure range and the cold temps sent your pressures out of the range on the lower end.  IOW, if you are loading at max, the colder temperatures would lower your pressures into the middle range and you would have less of a chance of a pressure spike.  Same with any powder.
 
Now if you had developed a load in cool temps and shot in a hotter temperature, there might be a problem with pressure spikes.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 20:20
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i like rl powders but it is too sensitive to the cold i only use hodgdon in my hunting rounds its the only powder ive found to shoot similar velocities in cold weather the rl 10x is the best powder ive found for 204
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 20:26
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Originally posted by sakomato sakomato wrote:

Hey pyro, I would think that with colder temperatures then you would have a reduction in pressure in cold temps, not pressure spikes.  The only caveat to that would be if you were on the lower end of the pressure range and the cold temps sent your pressures out of the range on the lower end.  IOW, if you are loading at max, the colder temperatures would lower your pressures into the middle range and you would have less of a chance of a pressure spike.  Same with any powder.
 
Now if you had developed a load in cool temps and shot in a hotter temperature, there might be a problem with pressure spikes.

thats right, the last couple lines of your post are where the troubles come in, which is why if at all possible i do all of my load development in the winter. since those temps are similar to that of the early november deer season here. i try to do very little to no testing in the summer for those reasons.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 20:31
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Hey pyro, since you dredged this thread up, I will update with the way the load finally turned out
 
 
Big Grin
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 20:33
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as usual, damn fine shooting robert!! i think that deserves a ceegarLight It Up
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 21:03
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Don't mind if I do!  Always smoke a good one at the range
 
 
Ah, the finer things in life!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 21:13
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hell ya and glass of good whiskey you would be set!
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