I have the 9th edition Hornady manual and there is no information on reloading this bullet in the 450bm. Where can I find reloading information for this?
Not all the reloading information of use to our 450b members is found in published books or online reloading sites. We're just not that big a crowd. You can however find all kinds of information here on the 225 FTX.
Go to Google and enter this search term site:450bushmaster.net "225 FTX"
Just like the bold text is entered to the left. That will produce 131 or so hits. Start reading back on May 21, 2010 on the experiment "225 FTX - Going the other way too". Named because everyone was looking at higher weight projectiles than the factory 250, but I looked lower, starting with the experiment named "200 FTX - Going the other way" about a month before the 225 FTX experiment. Both bullets are excellent performers, reaching excellent velocities and grouping well at 100 yards. As Newton would suggest, recoil is considerably less than heavier bullets but they're still highly lethal. Both of those weight bullets play to the strengths of Lil Gun. With my 20" barrel, I have observed three accuracy nodes though truth be told, the 225 was pretty accurate across the entire load range in the article. Just a little better at 36gr, 38gr and 41gr.
feature is an excellent way to find threads and posts in any forum. It certainly eclipses the native search function built into our forum here.
EDIT: Lest I forget, if you haven't already done so, check out this article as well on the .452 FTX family. Link Here