Ooooohhhhh!!! Talking Jet bullets with a Kiersten! That sounds like a relationship with possibilities!

Lyman's 45th edition used a 6 inch M-53 to generate their data, listed below. They used one 40 grain softpoint Remington and 2 cast bullets.

A Lyman 225107 gas-checked bullet weighing 38 grains used:

Bullseye 2.0/1038 start, 3.5/1418 max.
Unique 3.5/1230 start, 5.5/1663 max.
2400 11.0/1872 start, 12.0/1698 max.
SR 4756 5.0/1285 start, 6.7/1675 max.
IMR 4227 11.0/1742 start, 13.5/2040/max.

Lyman often reported the most accurate load they ran across while developing their data, and for this bullet it was 3.5 Unique/1230 fps.

A Lyman 225438 gas-checked bullet weighing 45 grains used:

Bullseye 2.0/940 start, 3.5/1340 max.
Unique 3.5/1131 start, 5.0/1392 max.
2400 10.5/1745 start, 11.5/1897 max.
SR 4756 5.0/1285 start, 6.7/1675 max.
IMR 4227 11.0/1742 start, 13.5/1992 max.

Accuracy load was IMR 4227 13.0/1992 fps.

The accuracy load for the 40 grain Remington jacketed bullet was IMR 4227 11.0/1575 fps.

For many loads and calibers, they also offered a "factory duplication load." For this bullet, it was 12.0 2400/1937 fps. The Remington factory load clocked at 1937 fps in their Model 53.

While no two guns will probably like the exact same load best, be it factory or handload, I often found that the powders that produced the "accuracy load" in Lyman's test gun shot well in mine.

The Lyman 45th was my first reloading manual. It is a good one, and even though I bought mine in 1974, it's still a good source of information.