Dillon 750 vs. Rockchucker Press Precision For .223

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peeplwtchr

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Hi All-

I am wondering if this progressive will turn out single stage consistency. Can anyone share thier experience with the two? I believe the bigest concerns in terms of consistency between the two might be seating depth and powder drop?

The reason I ask is that I am wondering whether spending the money on a new 750 toolhead, case feed plate and powder drop would be worth it, or would I be sacrificing accuracy?

My gear:

Rockchucker-
-Powder drop is a Chargemaster lite
- Lee dies (Full length sizer)

750 -
- Dillon powder drop
- Lee dies (Full length sizer)
 
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Problem is you have to trim and clean the brass after sizing. If someone know a work around, let me know
 
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The Chargemaster is +/- 0.1 grain, maybe even better (I think that mine is). I generally expect about +/- 1% with my Dillon's and stick powders like Varget and Rl15. With a mid-20's gr. charge that translates to +/- 0.2 or occasionally 0.3 gr. I still load a lot of .223 on my Dillon and think that it shoots pretty well but prefer to weigh charges for precision, longer range match ammo.

Problem is you have to trim and clean the brass after sizing. If someone know a work around, let me know

I've been lubing with One-Shot and just leave it on. I don't trim every time and have been using a X-die which I think helps.
 
The Chargemaster is +/- 0.1 grain, maybe even better (I think that mine is). I generally expect about +/- 1% with my Dillon's and stick powders like Varget and Rl15. With a mid-20's gr. charge that translates to +/- 0.2 or occasionally 0.3 gr. I still load a lot of .223 on my Dillon and think that it shoots pretty well but prefer to weigh charges for precision, longer range match ammo.



I've been lubing with One-Shot and just leave it on. I don't trim every time and have been using a X-die which I think helps.
what’s an X-Die? what sizing die are you using?
 
Hi All-

I am wondering if this progressive will turn out single stage consistency. Can anyone share thier experience with the two? I believe the bigest concerns in terms of consistency between the two might be seating depth and powder drop?

The reason I ask is that I am wondering whether spending the money on a new 750 toolhead, case feed plate and powder drop would be worth it, or would I be sacrificing accuracy?

My gear:

Rockchucker-
-Powder drop is a Chargemaster lite
- Lee dies (Full length sizer)

750 -
- Dillon powder drop
- Lee dies (Full length sizer)

I've loaded thousands of sub moa rounds on a 750. Yes, you can load more accurate ammo on a single stage, but you can't load 700 rounds an hour. Also, once you have three 750, might as well get a press mounted trimmer and trim dies. I decapped and trimmed in one operation. Don't bother with a swage it for the 750... if you want to swage on the press, get a 1050 or 1100.
 
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The Chargemaster is +/- 0.1 grain, maybe even better (I think that mine is). I generally expect about +/- 1% with my Dillon's and stick powders like Varget and Rl15. With a mid-20's gr. charge that translates to +/- 0.2 or occasionally 0.3 gr. I still load a lot of .223 on my Dillon and think that it shoots pretty well but prefer to weigh charges for precision, longer range match ammo.



I've been lubing with One-Shot and just leave it on. I don't trim every time and have been using a X-die which I think helps.
Thx for the powder reminder, it's either Varget or IMR8208.
 
MK Engineering makes a 3D printed powder thru adapter for Dillons that allows you to drop a weighed powder charge in the powder die station of 550, 650 and 750 presses, viva one of their funnels.
dillon-adapter-on-die-square-small.jpg


https://www.mkmachining.com/product/dillon-powder-through-die-adapter/

RCBS sells a similar steel version for the Uniflow powder die under the Uniflow P.M. Such allows single station precision.......as long as you're willing to weigh the powder and drop it manually at the powder drop station for each and every round.;) (still faster than using a single station only.)

Pictures below, of the RCBS funnel adapter on the left, Uniflow powder die on the right: (to be used with RCBS funnels)

adapter.jpg Powder Die.jpg QuickChange Funnels.jpg

Or you could design and print your own, if you have or know someone who has a 3D printer.
 
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MK Engineering makes a 3D printed powder thru adapter for Dillons that allows you to drop a weighed powder charge in the powder die station of 550, 650 and 750 presses, viva one of their funnels.
View attachment 1095594


https://www.mkmachining.com/product/dillon-powder-through-die-adapter/

RCBS sells a similar steel version for the Uniflow powder die under the Uniflow P.M. Such allows single station precision.......as long as you're willing to weigh the powder and drop it manually at the powder drop station for each and every round.;) (still faster than using a single station only.)

Pictures below, of the RCBS funnel adapter on the left, Uniflow powder die on the right: (to be used with RCBS funnels)

View attachment 1095592 View attachment 1095593

Or you could design and print your own, if you have or know someone who has a 3D printer.
I don’t see the point of using a progressive, when your weighing powder and dumping in charge. Just do it on a Single. or do it on a Lee APP press
 
Like I said, it's still faster.....especially it you use case and bullet feeders. The APP can use feeders, but still requires a stroke for every operation. A progressive? First case....Stroke to the powder station, fill the measured powder load, then a stroke for the for the bullet feeder, then the seater, then a crimper (if you want one). Then after the first case is finished, it's drop powder and one stroke for each round thereafter.......way faster than a single stage or turret.

Would I do that? Powder measures are good enough for what I do......but then I don't compete.......if I did, it might be worth it.
 
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I believe the bigest concerns in terms of consistency between the two might be seating depth and powder drop?

Those are two things that are easily quantifiable if you have a scale and a caliper.

Thx for the powder reminder, it's either Varget or IMR8208.

Extruded powders and powder measures are not the best of friends. 748, Xtermanator, TAC and other ball powders meter much better and give good results.
 
Those are two things that are easily quantifiable if you have a scale and a caliper.

Extruded powders and powder measures are not the best of friends. 748, Xtermanator, TAC and other ball powders meter much better and give good results.


Yep, true enough, and my favorite .223 load uses TAC. Doesn't need the above adapter and measured loads. For .308 my favorite load uses 4895. I recognize a trickler scale would make it more accurate.....but it's accurate enough for what I do.

I didn't forget Hornady, but I've only had experience with my two RCBS progressives and my brother's Dillon 650. I like Hornady's smoother half rotation per half stroke, but I prefer Dillon's and RCBS's tool heads (die plates). l like less and larger caliber change parts......keeps me saner at my age. But no doubt it's a good press.

RCBS's reputation you mentioned mostly came from Dillon users on well tested blue presses, and a few early adopters who needed to have their hands held, and RCBS's corporate overlord who keep making the same mistake.....they like to add new products, but they don't like minor upgrading, and hand holding, even though it is way cheaper than bringing out a new product....and way better to please existing customers.
 
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Hi All-

I am wondering if this progressive will turn out single stage consistency. Can anyone share thier experience with the two? I believe the bigest concerns in terms of consistency between the two might be seating depth and powder drop?

The reason I ask is that I am wondering whether spending the money on a new 750 toolhead, case feed plate and powder drop would be worth it, or would I be sacrificing accuracy?

My gear:

Rockchucker-
-Powder drop is a Chargemaster lite
- Lee dies (Full length sizer)

750 -
- Dillon powder drop
- Lee dies (Full length sizer)

The 750 is capable of creating very accurate ammo, but the powder drop is the limiting factor. So my suggestion is to use the best of both worlds. Using a powder thru funnel like the Hornady one I linked below in conjunction with your Chargemaster will produce some pretty decent ammo. I know its not blue, but Ive used one of these funnels for years now, and it works great.

https://www.midwayusa.com/product/1018252785
 
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The 750 is capable of creating very accurate ammo, but the powder drop is the limiting factor. So my suggestion is to use the best of both worlds. Using a powder thru funnel like the Hornady one I linked below in conjunction with your Chargemaster will produce some pretty decent ammo. I know its not blue, but Ive used one of these funnels for years now, and it works great.

https://www.midwayusa.com/product/1018252785

Dillon also makes a manual powder die that uses their caliber conversion funnel. It comes with the BL550, but can be bought separately.
 
THAT is what stands between me and buying a Dillon. Taking a case on and off a press defeats the purpose of it all.
Same, if your doing .223, 308.. nato, spray & pray rifle stuff. I want a progressive to go from tumbled brass to quality finished ammo. Wonder how much a dillion 1100xxx would cost with, feeders, trim, powder check, EVERYTHING

my estimated $ 3500 bet @EricBu can chime in
 
Same, if your doing .223, 308.. nato, spray & pray rifle stuff. I want a progressive to go from tumbled brass to quality finished ammo. Wonder how much a dillion 1100xxx would cost with, feeders, trim, powder check, EVERYTHING

my estimated $ 3500 bet @EricBu can chime in

Well, I easily make sub MOA ammo on the 750, and the Mark 7 Revolution, no problem. You just have to choose powder that meters well. I can get match accuracy when I load it on my 550 and weigh each charge, and even that is about 5x faster than a single stage. In fact, I load my long distance 338 Lapua Magnum ammo on my 550, and that shoots into a group that is right about .34 inches and is capable of hitting a 12 inch steel plate at 1300 yards 10 for 10. As far as "tumbled brass to quality finished ammo", assuming you're referring to once fired brass...single pass processing is a myth in reality. It's a good way to break your press, AND make dangerous crappy ammo. Yeah, there's people who do it, brag about it even... You have to take too many risks, and too many shortcuts to do it with a Dillon, manual or automated. The Mark 7 mitigates some of the risks by having 10 stations...but single pass loading on once fired leads to a LOT of down time, because brass prep is the key to consistency and reliability on the press, and things like ringers or rocks and rimfire brass inside a case bring it to a halt, and more often than not break something. That said, brass prep is offloaded to another machine. Doesn't matter what, but if you want the full monty (decap, trim, and swage) you need a 1050, 1100, or CP2000. If you want to automate, the 1050 or CP2000 is the right choice. For an average joe loader.....a 750 is fine, just don't run a swage-it on it, it might break the frame, and it sucks...does not swage worth a dam. You can trim and decap though, and with the case feeder, it's easy schmeezy to knock out a few thousand in an afternoon to have on hand for loading. Plus, running it through the 750 for brass prep makes it easy to find the debris inside cases, ringers, bad brass, etc...when you're not actually loading. Always clean again after trimming, keep the shavings out of your machine when loading, and too clean the primer pocket. I previously swaged with a dillon swager, but now just do it on the Revolution. If your brass is cleaned, decapped, trimmed, and swaged already....you can load FAST on the 750, and smooth, plus, since by trimming it, you've already sized it, you can go super light on the case lube, which also helps keep the powder drop more accurate, and reduces stop time to clean dies, etc. It's the same as loading new brass for all intents and purposes. Use a powder like 748, 322, 355, or Precision Rifle, and it will be plenty accurate. If you want to step it up even more, buy an annealer.
 
Problem is you have to trim and clean the brass after sizing. If someone know a work around, let me know

An X-die can do it. I know they work. I dont use one.
Rifle brass just has to be prepped before use, either on press with a trimmer, or by hand with a trimmer. Its an inescapable fact.
If you knew your brass wasnt going to grow post sizing, you could dry tumble, run sizer with a decapping rod in 1, M-die in 2 to put a little flare on the case instead of chamfering the cases, powder drop in 3, seater in 4, FCD in 5 mostly to remove flare from M-die
I would use this for blaster ammo though and not anything that I expected great accuracy from.

Eventually I will move to a Dillon RT1500 trimmer to handle on all my bulk 223 and 308 trimming. I may run it on my LnL AP, or I may buy a 750. Have not made up my mind about that just yet.
The process at that point is quite simple. To process, decapper in 1, trimmer in 3 or 4, then tumble the brass. When loading use M-die in 1 to size necks, powder drop in 2, bullet drop in 3, seater in 4. FCD in 5 to remove flare. A press with more stations would be helpful, but not completely necessary.
 
I don’t see the point of using a progressive, when your weighing powder and dumping in charge. Just do it on a Single. or do it on a Lee APP press

Here’s the point. A progressive press with a case feeder makes quicker work of resizing.

I’ll add another point. Your tool head on a progressive will have both the powder die and seating die installed so no die changes between steps. In other words, prime, throw, trickle up, seat with no die changes
 
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Here’s the point. A progressive press with a case feeder makes quicker work of resizing.

I’ll add another point. Your tool head on a progressive will have both the powder die and seating die installed so no die changes between steps. In other words, prime, throw, trickle up, seat with no die changes
my fastest way so far, to me, is case preparation on Lee APP with case feeder, trim, &clean. Then finish on the Lee Ultamate Pro 4000! lol
 
my fastest way so far, to me, is case preparation on Lee APP with case feeder, trim, &clean. Then finish on the Lee Ultamate Pro 4000! lol

Nothing wrong with the APP. I run mine with a case feeder and a 1000 pieces an hour for decapping is an easy mark to hit. I use it for all pistol brass pre tumble, and some of my rifle brass.
 
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