Home Forums Hunting & Shooting Ask The Gunwriters Max velocity with 130TTSX in a Win 270 w. RL 26

I've recently come over to RL17 in a couple cartridges. Been quite happy with it. I have a jug of RL26 in the cupboard as well. Anyone here do any temperature sensitivity work with the 26?

I have not but others have reported somewhere around 0.1 fps per degree change. So not like like some of the least sensitive like R23 but still good and similar to Hodgdons extreme powders. It is much less sensitive than R22. Supposedly R17 exhibits more temperature sensitivity but again this is secondhand information.

I only tried it twice, I chrono'd an average of 3230 fps/ 22" barrel.The bullet was the cutting edge 130 gr mth. Easy extraction, no excessive pressure- my notes. I should try it again. I also measured this same load out of my 19" BLR 2@ 3100+ .Reloder 26 is quite amazing.Love it with the 150's.I need to verify these numbers again

Thanks Tejano. I'm currently liking RL17,but can't ignore the results folks are getting with 26 and 150 grain bullets. I generally don't do load development in the heat of summer,but why build in a temp sensitivity issue unnecessarily.

I just picked up another 270 that is earmarked for a mule deer hunt late next Oct. Could be chilly in the mountains,and my load work will have to happen between now and then. 50 or 60 degrees shouldn't amount to much if I don't get married to a known problem child like RL22.

If I were to load for Arctic to Africa conditions I would go with R23 as it gets almost 3000 fps with the 150s according to Alliant and it shows almost no temperature variation. Some are reporting that it is easier to find an accurate load with too.

But I wouldn't be too concerned with R26 it will vary more but would have to be really hot/cold or long range to be a concern. I have used some powders known for temp. variation like R22 and H870 and I may have missed maybe one or two shots due to temp. and it is more likely due to numb hands and bad shooting.

Interesting. Any other load data using RL26?

Great thread.
I have trialed RL26 under 150 gr Partitions and have been impressed with the results.
Reviewing the results in this thread make me thing that RL26 might combine well with the 130 gr ETip. I have been impressed with the performance of the ETip on game, but believe Nosler is correct in recommending that loads remain moderate with conventional powders.
RL26 seems to be delivering some new sweet spots.

Spper is the best I have found.: https://www.speer-ammo.com/en/reloading/rifle

Alliant: https://www.alliantpowder.com/reloaders/Powder.aspx?powderid=40

And Berger: http://www.bergerbullets.com/reloading-data/

Speer is showing R26 as achieving 3,171 fps with 60.3 grains with the 130s, but didn't see what barrel length. I would think the banded monos would produce less pressure and in a longer barrel should come close to 3,200 fps. I would stop there even if no pressure signs showed. Alliant shows similar charges for the 150 but Speers seem to generate higher pressure than some other bullets.

When I start putting the hammer down on the 270 I have to remind myself how good I thought the old factory loads were until I found out they were not even reaching 2,900 fps.

You all should note that Speer lists a max with 150’s at 56.8 of R26.
Most folks here seem to think that 60-61 is OK with 150’s.

60 with 130’s should be OK.
Knowing when to stop=wisdom.

I wish it could be 50 degrees here for just five minutes. TTSX bullets are accurate in every rifle I’ve tried them. I use Accubonds in my 270’s, but you are making me want to try the TTSX.

In short mags RL 17 has had pretty terrible temp sensitivity for me.

Tag

Ive used RL26 and 150’s with much success in the velocity and accuracy deptartment. I also tried some 130 interlocks and started at 59.5 working up to 61.0, which yielded 3028 fps and a .450” 3-shot group. I pretty much use RL26 for all my 270 loading except the 110 TTSX.

Thanks Rick that is why I shouldn't quote charge weights with out the data in front of me. I was thinking old 4831 should have double checked the data. Yes some load R26 that high but I won't.

Tag.