RL15 is about 100 fps slower than RL17. RL19. 4350, 4831.
For a 20" hunting rifle, I would not start off with the inappropriate powder. You want all the velocity you can get, since you lose around 100 fps with the shorter barrel, to start with.
I am not knocking RL15. I used to buy it in 20kg drums from Bofors. But it is a 120 gr bullet powder, not the 140 to 160 gr I would use in a 260 for deer/moose.
Granted, RL 15 might not be the end all velocity wise, but I found this very informative thread started here on CGN by another member on loading for short vs long barrels... please read below this reply in its entirety....
I defer to your expertise Sir - I couldn't have stated it any better....
I am so glad we came to a mutual understanding...
Just curious - what would you recommend as an appropriate "quiet" powder?
All the best
Tom
Ps - My apologies billiee - my intent was not to hijack your thread....
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Thread: short barrel's vs long barrel's - help me understand reloading rules
07-24-2018, 12:41 PM #4
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As stated above, the powder that gets the best velocity, gets the best velocity. Barrel length (18" to 32") does not change powder choice.
I have a number of rifles with both long and short barrels. I am more concerned with accuracy than I am velocity, because for practical purposes, the short barrel will get about the same velocity, regardless of the powder I use. I have not found that a deer or moose can tell the difference of 100 fps one way or the other.
So each rifle gets a work up to find the powder/charge that gets the best accuracy.
But there is one other consideration. A 20" or less barrel can have a terrible bark that is painful on the ears. For a hunting rifle (no muffs) I want to use a "quiet" powder. I might have to try 2 or 3 to find the one that does not bark.
Learn by the experience of others.... you won't live long enough to make all the mistakes yourself....
The trouble with most people isn't what they don't know....it's what they do know that simply isn't so.
Beware of false knowledge; it is more dangerous than ignorance." George Bernard Shaw