I'm going to use this thread to refer back to as I have more and more hand-loading and re-loading information to post. Right now it's only going to involve 1 powder (800x) and 1 bullet (200gr. xtp in 10mm) but I would rather not post it in the stickied thread due to throwing in other information. So yesterday (8/28/10) was the first time I have ever bought or used a chrono in my life. I have learned a valuable lesson during the last two days regarding chrono use - but more on that later in the thread. My quest for this load started about 10 years ago during a Colorado elk hunting season that found me dragging a big 24" barreled scoped Browning A-bolt through the spruce and gambel oak on the side of 45 degree hills where there happened to be several giant bull elk running up and down various times of the short autumn days. I found myself in a predicament more than once where the big gun, bipod, sling and 6-24x leupold were just not the right tools for that otherwise productive area. After several years of prior hunting the high up country (10K+ ASL) where long shots were necessary to hit anything, I found that there is lower ground out there that is just as challenging to hunt, and even more productive and advantageous for various reasons - but I learned a different tool was necessary. My conclusion was that in this spot (and many other similar travel/migration routes), a short barreled weapon with open sights would have a distinct advantage over a scoped rifle. I had a progression of firearms I have purchased and sold since going big game hunting last and coupled with various experiments with "modular" arms and other items that have multiple uses, my experience over the years has led me to a preference of extreme practicality. So my current quest as it relates with firearms is I have made the decision to purchase a handgun (in the case the G29SF) that can serve multiple roles; Concealable self-defense. Multiple caliber capability (modularity). Practical for hunting small game Practical for hunting medium-large game. So right now I have a G29SF with an Advantage arms upper + 2 mags that will allow me to use the small pistol to hunt anything from squirrels to Moose. One of the constraints I chose to meet when deciding what weapons system to purchase was Colorado's "elk hunting" centerfire pistol requirement of producing 550 ft/lbs. of energy at 50 yards. So as I examined the various rounds that offer that level of firepower, yet are still concealable, I settled on the 10mm being "it". Due to the modularity, cost, and manufacturer support, I chose the Glock 29 as the model I wanted to use for these purposes. This brings us up to the current situation: I am developing a 10mm load I can use for hunting big game. After exhaustive reading on this forum and others and considering the opinions of many people who I have discussed this with in combination of my experiences with shooting, hunting and killing and dissecting deer and elk, my conclusion was that I wanted to have a bullet that had the best combination of penetration, expansion and ballistics. That led me to the 200 grain Hornady XTP. It has amongst the highest ballistic coefficient of any 10mm bullet, it is reasonably available, the comparative external ballistics looked better than the less weightier choices, and based on running some handloads through water jugs (country boy testing is the best I can do), this seems like it's going to be a very good choice for the desired application. Now if only powders were as easy to decide on. If you look at current reloading tables, you will find there's only about 100 powders you can use, and if you visit discussion forums, there is only about 1000 different guys on them and each one of them likes one of the different 100 powders - but in all honesty, I found that most of them settled on one of the more popular 7 powders that more often than not come to mind (in no order): Blue dot; Long shot; AA#7; AA#9; 2400; 800X; N105 ...and of all the people who I had reviewed post on forums there is one person that stood out as one who had taken the velocity testing with 10mm further than anyone else - and surprisingly, his name is NOT McNett. (though the info he has posted is invaluable). What this particular person led on to is that 800x will go further with less pressure than any other common popular powder on the retail market - IF you're not afraid to push the limits of the cartridge (and this means beyond what the mfgr. listed as "max" loads). Obviously, an aftermarket barrel was necessary for this to prevent case head rupture - so I got one of those too. So, after playing around with blue dot and 155gr. bullets for "fun" and getting used to reloading this cartridge more than anything else, I decided to get serious and procure some 800x. I'll post more tomorrow when I have some time. Stay tuned - Interesting results from 8/28 & 8/29coming soon - with pics.