After what seems like two years I finally got my hands on some RL 23 and tried in out in 270 Win with some 150 gr. Nosler BT's. All I can say is WOW! Every seating depth I shot was good. New cases, once fired cases, three times fired cases - everything shot good. But, I am very thankful that I followed good protocol and started low and work up. The Alliant website was listing charges weights of 57.0 grains and up for 150 gr. bullets. I only needed 55.5 gr. of RL 23 to get nearly 2900 ft/sec. 56.0 gr. of RL 23 gave me 2956 fps - nearly max speed listed for heavier charge weights.
Here are my fouling shots. I just wanted to see how close the first shot would track to latter groups. It tracked very close.
![Fouling Shots.jpg Fouling Shots.jpg](https://forum.nosler.com/data/attachments/6/6670-f9202897a23a06a9cf5f6cf20b9b9f33.jpg)
This group is seated very deep with a base to ogive measurement of 2.615" - similar to the depth of Nosler factory 140 BT's that shot so well in my rifle. This corresponds to an OAL of about 3.23".
![Ogive-2.615.jpg Ogive-2.615.jpg](https://forum.nosler.com/data/attachments/6/6671-bdb01cd6aabfb64b0adc20e3872095e0.jpg)
This group is seated with a base to ogive measurement of 2.703" - a measurement that worked well with the IMR 7977 powder. This corresponds to an OAL of about 3.32"
![Ogive-2.703.jpg Ogive-2.703.jpg](https://forum.nosler.com/data/attachments/6/6672-d2f5213cfac25b6aa151ff06b028c584.jpg)
This group is seated long - about .020" off the lands (although it was difficult to get consistent measurements. There seemed to be bullet to bullet variation.) This corresponds to an OAL of about 3.37".
![Ogive-2.750.jpg Ogive-2.750.jpg](https://forum.nosler.com/data/attachments/6/6673-e8e1785ea308ba37f7bc3cb357a4727b.jpg)
It is obvious to me that my rifle likes RL 23 with the 150 gr. BT.
I think there are too few data points for any differences here to be statistically significant. However, I think I like the group with the base to ogive measurement of 2.703" best. It is not seated deep and it is not seated long. I would be interested in your opinions as to which seating depth to pursue.
I would be interested to know what the fill %'s are for these loads if anyone could check what Quickload predicts for fill %. If it is relevant, my overfill case capacity is 72.0 grains.
A very happy Dan
Here are my fouling shots. I just wanted to see how close the first shot would track to latter groups. It tracked very close.
![Fouling Shots.jpg Fouling Shots.jpg](https://forum.nosler.com/data/attachments/6/6670-f9202897a23a06a9cf5f6cf20b9b9f33.jpg)
This group is seated very deep with a base to ogive measurement of 2.615" - similar to the depth of Nosler factory 140 BT's that shot so well in my rifle. This corresponds to an OAL of about 3.23".
![Ogive-2.615.jpg Ogive-2.615.jpg](https://forum.nosler.com/data/attachments/6/6671-bdb01cd6aabfb64b0adc20e3872095e0.jpg)
This group is seated with a base to ogive measurement of 2.703" - a measurement that worked well with the IMR 7977 powder. This corresponds to an OAL of about 3.32"
![Ogive-2.703.jpg Ogive-2.703.jpg](https://forum.nosler.com/data/attachments/6/6672-d2f5213cfac25b6aa151ff06b028c584.jpg)
This group is seated long - about .020" off the lands (although it was difficult to get consistent measurements. There seemed to be bullet to bullet variation.) This corresponds to an OAL of about 3.37".
![Ogive-2.750.jpg Ogive-2.750.jpg](https://forum.nosler.com/data/attachments/6/6673-e8e1785ea308ba37f7bc3cb357a4727b.jpg)
It is obvious to me that my rifle likes RL 23 with the 150 gr. BT.
I think there are too few data points for any differences here to be statistically significant. However, I think I like the group with the base to ogive measurement of 2.703" best. It is not seated deep and it is not seated long. I would be interested in your opinions as to which seating depth to pursue.
I would be interested to know what the fill %'s are for these loads if anyone could check what Quickload predicts for fill %. If it is relevant, my overfill case capacity is 72.0 grains.
A very happy Dan