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Joined: Oct 2008
Posts: 7,263
Campfire Tracker
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Campfire Tracker
Joined: Oct 2008
Posts: 7,263 |
R26 is very uniform as far as temperature and pressure until you get above 80 or 90 degrees and then there is a sharp increase in pressure, this was in the 6.5x55 and I already had a max load so could be due to the combined factors. I also saw this with the 6mm AI so similar case capacities but again with max loads. I dropped back almost two grains of powder and then the pressure was not apparent at 80 degrees. I will re-test closer to 100 degrees to make sure they are good year around loads. Once I reduced the charge some of the velocity advantage was lost and it was only about 50-75 fps faster than R23.
Not enough of a difference to matter so next jug of powder will probably be R23 as it works so well in most of the cartridges I load for.
I am really liking R16 too it seems really versatile and is in the same niche as the 4350s, 4451 and R17. R16 gets most of the velocity of R17 but with less temperature sensitivity.
In the 25-06 it boots the 85 grain bullets out at 3,600 fps. Fast enough so I am not lusting for another 257 Weatherby as much.
"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli
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Joined: Aug 2002
Posts: 14,459
Campfire Outfitter
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Campfire Outfitter
Joined: Aug 2002
Posts: 14,459 |
I am really liking R16 too it seems really versatile and is in the same niche as the 4350s, 4451 and R17. R16 gets most of the velocity of R17 My findings too with RL16. I'm getting 2,600 mv shooting 250's out of a 338 RCM.
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Joined: May 2003
Posts: 5,792
Campfire Tracker
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Campfire Tracker
Joined: May 2003
Posts: 5,792 |
R26 gets impressive results in the 6.5 Creedmoor but I’ve never seen any mention of R23 in the Creedmoor. Anyone else hear of anything with that combo?
John
If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then I will hear from heaven, and I will forgive their sin and will heal their land. 2 Chronicles 7:14
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Joined: Jul 2001
Posts: 60,063
Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,063 |
Have not used 23 all that much in the Creedmoor, but it turned out to be the best powder with 140-grain class bullets in my 1-8 twist .260 Remington Tikka T3 Super-Light, one of a special run from that notorious center of special-runs, Whittaker Guns. 140 Nosler AccuBonds basically go into the same hole.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Joined: May 2003
Posts: 5,792
Campfire Tracker
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Campfire Tracker
Joined: May 2003
Posts: 5,792 |
If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then I will hear from heaven, and I will forgive their sin and will heal their land. 2 Chronicles 7:14
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Joined: Aug 2005
Posts: 318
Campfire Member
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Campfire Member
Joined: Aug 2005
Posts: 318 |
I had good promise with 23 and the 147 Hornady, but just haven't had the time to work with it more. I had a great load with 46.7 rl22 so figured 23 would work. I couldn't fit that much powder in the case, as I guess 23 has more volume. I tried 46.0 and got around 2770 fps if I remember correctly. I had only loaded 3 up, but it put 2 within an inch or so at 500 yards and the third was about 4" away. No visible pressure, and the temperature was in the 90's. I'll try it again this spring when I have more time.
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