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Lyman DPS III vs. RCBS Chargemaster

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Unread 11-16-2007, 10:43 PM
Silver Member
Join Date: Mar 2004
Location: New Mexico
Posts: 244
Lyman DPS III vs. RCBS Chargemaster

Thought I would post this for those that might be curious. Let me start by saying I am not an authority on these scales, I am just relating my experience. I am sure there are others that may have had great luck, but this is my post on my experience. I purchased a Lyman DPS III, which supposedly had some of the bugs worked out from older models problems. I got it home and carefully followed the set-up instructions, which included a grueling 30 minute start up time (each time it is turned on). I loaded my pet load for my 243 Ack Imp and took them out the next day. The loads, which normally shoot sub 1/4", suddenly were shooting close to 3/4". A few across the chrono showed a great drop in velocity. Later, at home, I dispensed the pet load and put it on my 10-10 balance (which had been used to get the original load). I had to run the Lyman up to 48.5 gns to get a load that would balance at 46.0 on the 10-10. I re-calibrated the scale twice, per the manual's instructions, which changed nothing. I took the new 2.5gn higher load out and was suddenly back to my sub 1/4" groups. Now I was questioning the accuracy of which scale ? Then, several days later, while loading some ammo for a friends 30-06, the scale began dispensing and you could watch powder coming out at a much greater rate than the digital read out was increasing. It finally got the the supposed charge weight and stopped. It was obvious just by looking that there was WAY too much powder, about 60gns too much powder to be exact. I attempted to calibrate the scale again, per the manual, and now began getting error messages which prevented me from calibrating. Next, I anxiously checked my Sportsmans Warehouse receipt, which showed I had two days left on my 30 day return policy. The nice folks at Sportsmans allowed me to exchange the Lyman towards the RCBS chargemaster ($70 more). I got the RCBS home, set it up per the instructions and was delighted to find that you could turn it on and use it within a minute, compared to 30 for the the Lyman. I was also excited to find that my 46.0gn load, thrown by the chargemaster, balanced my 10-10 scale perfectly ten out of ten times. I have been using it for a couple weeks now and am very happy. Again, not scientific, but my experience.
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Unread 11-16-2007, 10:55 PM
Gold Member
Join Date: Apr 2006
Location: Alberta
Posts: 868
I've heard great things about the rcbs chargemaster. Gotta get me one of those over winter.
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Unread 11-17-2007, 01:18 AM
Join Date: Jun 2007
Location: Wyoming
Posts: 2,833
I use my chargemaster for all of my loading--Really like it.
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Unread 11-17-2007, 09:33 AM
Bronze Member
Join Date: Nov 2002
Location: Montana
Posts: 56
i bought a used RCBS charge master and couldn't be more happier. no warm up time needed and charges are very consistant.
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Unread 11-17-2007, 03:06 PM
Bronze Member
Join Date: Feb 2002
Location: Colorado
Posts: 73
Thanks for posting your experience. I am looking at buying one of these in the near future and your input has helped me make up my mind between "orange" and "green."
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Unread 11-17-2007, 11:34 PM
Bronze Member
Join Date: Oct 2006
Posts: 53

I purchased a chargemaster last spring and loved the ease and repeatability until i started loading H4350. Now it consistently measures the load that is 1-5 grain over. I have no problem with other powders used. Has anybody else seen this problem.
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Unread 11-19-2007, 02:07 AM
Junior Member
Join Date: Sep 2007
Location: The Boonies of Ohio
Posts: 7
I have the Lyman DPS and have NEVER had a Problem with mine,,and it "Throws" my Powder Weight just Fine
As for the 30 Minute warm up time,,all you have to do is Bypass it,,the ONLY time I let it warm up for 30 Minutes is when I am doing other stuff and getting all my stuff together,,BUT that is Rare when I let it warm up,and I have NEVER had a Problem when I let it warm up and I never had a Problem when I Bypassed the Warm up Period:confused:
Maybe you got a Bad one,I don't know,,My friend up the road liked mine so much,,that he bought one and HIS Throws Perfect Loads,,we BOTH Check them against an RCBS Powder Scale :confused:
I have used mine to Reload Ammo for my AR-15 (.223) my Sons 223 and his 30-06,,and 357 Mag,40 S&W,22-250,,44 Mag and 303 British
I used it to work up a load for the Bushmaster AR-15 in 223 and it is shooting a Group that measured .355" at 100 Yards with a 55 Grn
V-Max !!! and my 22-250 is shooting .300" at 100 Yards and would PROBABLY shoot Better IF I could Shoot Good !!! ;)
The reason I DIDN'T get the RCBS is because an Older guy up the road was selling ALL his reloading stuff and he sold me the Lyman DPS for $100 and he threw in a 1 Lb Can of Winchester w231 Powder for my Pistol Loads,,so I COULDN'T pass that deal up,,Mine is a Lyman DPS II though !
I DON'T KNOW if that makes a difference or not,,BUT I have been using my Lyman DPS II for 2 & 1/2 Years now,,so from Mine and my Neighbors experience,,I wouldn't Hesitate from buying another Lyman DPS II and using it
Everyones Experience with Products ARE Different
Thank You Very much

Last edited by tatonka; 11-20-2007 at 06:05 PM.
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