buck460XVR sure picked my post apart (I must have pi$$ed him off somehow), but I stand by everything I wrote. First, I'm addressing a
new reloader and my advice to each and every
new reloader is K.I.S.S. Reloading normally isn't a temporary thing, where all aspects must be experience as soon as possible. It is a lifetime hobby where getting a good base is preferred (kinda like learning long division before advanced algebra).
I got my first .44 Magnum, a 6" 629 in '86, I was into the biggest, baddest reloads I could assemble (W296/H110 w/ 240 gr jacketed bullets up to//near max.) I enjoyed the report and the dust blowing away from my shooting station at the local indoor range. My loads got plenty of attention and garnered a lot of comments. That lasted about a year. My guns (5, .44 Magnums) and I are much better off now.
I have seen questionable load data on forums and even one outright dangerous load (a full grain over max. of a fast powder) and heard some really wild stuff at the range and gun shop. Many times a "who said" (or one with perceived authority) will influence a new reloader to go where it is not safe. For a
new reloader, err on the side of caution and get data from a published manual(s). What's the downside of that? There's plenty of loads/components to keep a new reloader busy for quite a while. If reloading is a hobby, why rush to find a "perfect" load and I believe there is no time wasted reloading. I reload for my guns and shooting not a "popular" or "celebrity" load. I have found nothing on line that I haven't seen in a reloading manual, and mebbe it's fun to compare loads with another reloader, but again, I'm addressing a
new reloader. If one is looking to find a load, why go through 2 or three steps before getting a load out of a manual?
I sincerely doubt the OP would benefit by a slow powder over Unique for a carbine and it it really necessary or wanted to have 200 fps more out of a load? (One of my best reloads for my Puma 20" carbine is a 265 gr, RNFP over a load of Bluedot that will certainly dispatch any deer around at normal "deer ranges"). Again I believe in K.I.S.S. for
new reloaders
So, go ahead and pick this post apart, trying to point out better methods/components for a new reloader, and I'll just stick with my comments...
Go slow, double check everything, and most important, have fun...
BTW; these methods have kept me and my guns safe for 30+ years of reloading...