Let's consider this, from a a current 650, and former SL900, 550, and 2 SDB owner's point of view.....
Your rifle cartridge uses small primers, and the pistol cartridge uses large primers.
If you load/shoot enough to justify buying one of either machine, you will have to change caliber tool heads, AND the primer feed in order to switch calibers.
Eventually, you won't want to do that, because it's a pain. Not a BIG pain, but never-the-less, a pain. It's time consuming, and requires a certain amount of foul language in order to get it done right. As a gentleman, I, of course, abhor foul language!
Therefore, why don't you consider buying the 650 over the 1050? That way you can afford to buy TWO of them, and not have to worry about changing primer feeds.....
Think about it..... ONE Super 1050 retails for $1539.95, ($1649.95 in .223 with carbide dies) PLUS the necessary parts to change calibers.....the second toolhead is $244.95, and the caliber conversion kit is $102.95 more, PLUS a second primer system, at $98.95. Total for the carbide version 1050 is $2096.80, + $39.95 for the machine cover, + either sales tax or shipping. And you will STILL have to change tool heads and primer feeds!
The 1050 is a real pain to change calibers and primer sizes; ANYONE who has tried will agree with that statement.
The basic 650 is $504.95; the case feeder is $199.95, the bullet tray is $36.95, and the roller handle is 38.95; multiply everything by a factor of 2, as you will need two of everything.
The total there is $1561.60, + tax or shipping, because you have to buy 2 of everything. That's TWO complete 650 machines for less than the price of ONE 1050.
I will admit that the is a certain cache' about owning a 1050, but only if you only load ONE caliber on it.
That's over $500 savings, PLUS the time and frustration you WON'T have by having to change calibers and primer feeds.
Just a thought. I load 6 different handgun calibers on a single 650, each of which has it's own toolhead, dies, and powder measure ready to go. I'd like to think I have a little experience with handgun reloading on Dillon products. I sold the SL900, the 550, and the 2 SDB's (one in EACH primer size!) to help pay for a different shotshell press, and the 650.
John