I've used Bullseye, HP-38, Winchester 231, Unique and HS-6 along with 777, Pryodex P, Pyrodex RS and Goex FFg and FFFg at one time or another. Dig out your reloading manuals and figure out what you are looking for in velocity and bullet weight. That will help you narrow down what you want to buy.
Here is "my" process to come up with a good handload. It doesnt matter rifle or pistol it all works the same.
Start with your "ideal" solution meaning case, primer, powder & bullet that you really want to use. Why start there? Well if you stumble on the solution then there is little need to keep going :biggrin:
Next have an attainable goal (your glock 19 isnt going to shoot 1in groups at 25yds no matter what you do).
Now lets make some bullets. Make 3 batch's of 5 rounds. 1st batch will be the minimum listed load. Next batch smack dab in the middle last one max published (there is little need to worry about pressure if you are using a current reloading manuals max load as they have been throughly gone over by lawyers).
Start a notebook & write all relevant load info on each loading in the book. I take it a step farther & color code. I use a permanent marker & color each primer & use the same color in my book that way I never get them mixed up.
Next shoot them off a solid rest at separate targets. Measure the groups & tabulate data.
If every group it terrible then this load will not yeild fruit. Time to change something be it powder primer or bullet.
If one of the groups is really good then you just need to zero in on it. With subsequent testing go up or down 2 tenths of a grain & go back to the range.
With some perseverance you should be able to come up with a great handload.
In some cases you can not come up with a load that shoots well... Time to sell the gun! Even if its a type style whatever that you REALLY like. If it doesnt shoot well you wont shoot it & then whats the point?
Let me know if you have any questions or need additional help.
I gotta agree with you about WRITING THINGS DOWN. If it ain't wrote down, it don't exist. You can't repeat it if you don't know what you did. (Don't ask me how I know this.:no
If you think that's a bit anal retentive, wait 'til you read this.:laugh:
When I am developing a new load, I take the published data and load 10 rounds at each 1/10th (.1) grain increments starting at the minimum and going straight to the maximum UNLESS I am looking for a specific velocity range and the max is listed as well (as in a couple hundred fps or more) over it. EVERYTHING except for the powder charge is as close to the same as I can get. I get as bad as benchrest shooters when it comes to case prep because the only variable I want is the powder charge. I've trimmed small lots of 100 rounds or more of pistol brass to the minimum case length more than once for a serious session of load development. The brass gets sorted by manufacturer, lot (if I have more than one lot of the same brand on hand) and number of times fired. I prefer once fired or virgin brass for load development and only use one brand and one lot of brass in that brand for any given test.
The 1st 5 rounds of the 10 that I load at each 1/10th grain (.1) increment are purely for function fire and for me to get a feel for the recoil. In semi autos, I want to see if it will work the action properly, it will lock the slide back on an empty slide and -if it's on the hot side- if there's any sign of the firing pin still being out when the brass is ejected. In wheel guns, I am mainly looking at the recoil. I rarely even put up a target for this part of the test, I just put the 5 rounds into the berm slowly.
The second 5 rounds are purely for accuracy. If I'm developing a load for a semi auto, I load the 5 test rounds and top it off with a factory or known reload. That round goes into the berm and the other 5 go on target for group. Usually, I shoot this part from a bench with my forearms/wrists resting on a sandbag for better accuracy. If I happen to have a carbine chambered in the caliber in question, I use it instead of a pistol for the same reason (besides, I tested function with the other 5 rounds). After all, I'm testing the ammunition, not my shooting skills. Normally, this is when I use the chronograph as well.
If I find a couple of powder charges that are close in function and accuracy, I may just go with the lower one (1/10th a grain adds up when you are talking about small charge weights like you have when you use Bullseye) or I may do a 20 or 25 round test to see if there's one load that has a lower standard deviation in velocity.