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Originally Posted by 320pf
Scollins,
Did you read the recommendation that I posted carefully?
"Also a warning! DO NOT USE H110 for subsonic loads or powder charges less than those listed in the Sierra reloading manual!"
I did not say;
"DO NOT USE H110 for subsonic loads"
I said;
"DO NOT USE H110 for subsonic loads or powder charges less than those listed in the Sierra reloading manual!"
I believe that this is sound advice to give someone new to reloading his own ammo. It is also sound advice for anyone reloading no matter what the experience level.
Finally, the velocities given for loads listed in the Sierra manual are all out of a 10 in. barrel. I have found that I typically get 100 to 200 fps more than the listed velocity from my 16 in. barrel.
320pf
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I did read it carefully. It says "DO NOT USE H110 for subsonic loads
OR powder charges less than those listed in the Sierra reloading manual." The choice and placement of the word *OR* in your statement means "DO NOT USE H110 for subsonic loads." Everything after the *OR* is a different statement or condition, and totally separates itself from the initial statement before the word *OR*.
If you meant to convey that H110 can be used with subsonic loads, but with certain conditions, your statement should read "DO NOT USE H110 for subsonic loads WITH powder charges less than those listed in the Sierra Reloading manual." You could also phrase it as "DO NOT USE H110 for subsonic loads UNLESS you are at or above the minimum powder charges listed in the Sierra Reloading Manual."
My personal opinion is that noobies to reloading shouldn't be messing around with wild cat catridges, even one with a lot of commercial data like the 300 Whisper, 300/221, 300 Fireball or whatever you want to call it. There are diffferences in chamber reamers used by the various barrel makers and that can cause problems. There are different die manufacturers, and there are differences in their dimensions. I use Redding Dies in a Randall Rausch barrel, with brass from Davis that is formed from Redding Dies. It works well in my rifle.
Also, building subsonic loads is a different process than what most reloading manuals suggest for standard loads, which is start low and work UP. With subsonic, you want to start near maximum and work your way DOWN, not the other way around. The person in the Fiesty Rooster link should have started with his higher loads first, then worked down until he got the velocity he wanted. Had he done that, he might not have split his barrel.
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