Powder Scales @ Shortrange Benchrest Matches

Steelhead1 said:
Gotta toss in this tidbit of information, Boyd according to Lou Murdica last saturday evening at the Cactus, Canadian 2015 is not the new T powder! It is the reject of T powder that will not meet the 1% volume and 1% burn rate that is required by the parameters that accurate agreed too. The T powder that is the right stuff is stuck in Montana right now, and should be available soon. The designation on this powder will be LR-32! By the way I also have both Harrells and a Chargemaster and I still prefer my Harrells![/QUOTe Thanks, but Most of us realize that. Some of us wanted the 2015 that is available now because its the same size and the burn rate is a little slower
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I shot a little but of the Canadian 2015 yesterdaty, after successfully tuning up with three powders that could take me to the 3,420ish node that the tuner barrel combo liked, I was able to get excellent results at a lower node, 3,260 with the Canadian stuff. For guys that are already working at a similar velocity, I think that it will prove to be a very good powder, that is easy to throw. If you want more speed, wait.
 
On my measure, 54....I snap the handle straight up pretty quick. move over to touch the stop, pause, and then lower slowly to cutoff (for this powder). Harrell's Deluxe with the sphere-like body....slow drop with a 10", .22 cal. drop tube...205Ms
 
(boyd and james....wouldn't it be much safer if boyd told you what the charge weighed vs clicks......just 2 cents for safety)


mike in co
 
I am currently using a Chargemaster. Starting in about 2004 I started weighing my thrown charges and found that the actual variation was +- .2 grains with occasional .3 grain excursions. I've also noticed that I get strings of charges that are consistantly low or high. +- .1 would be acceptable, but I know from experience that anyone who believes he is throwing to that tolerance is deluding himself.
 
Steve Lee said:
I am currently using a Chargemaster. Starting in about 2004 I started weighing my thrown charges and found that the actual variation was +- .2 grains with occasional .3 grain excursions. I've also noticed that I get strings of charges that are consistantly low or high. +- .1 would be acceptable, but I know from experience that anyone who believes he is throwing to that tolerance is deluding himself.
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Steve, how iz ya? I ordered a new measure for a guy last week. He says he gets .5 gr. variations. I took it to my shack, w/133, first few I dropped, some were -.3 but never +. I removed the measure from it's stand and clamped it to the bench. I dropped 25 charges into the pan. Out of 1st 6, three were minus .1, 2 were -.2, the 4th was dead on. The next 9 were dead on, the rest were -.1 and - .2 w/couple dead on. I have it recorded on paper. I never dropped a charge (of the 25) that went over my 28gr setting.
I've noticed when weighing w/digital scale, I can't have any air stirring (air conditioner/fan) and get consistant readings.
The guy I bought it for, doesn't like the thrower, and will probably sell it. (digital scale I used to weigh was a Lyman similar to the chargemaster)
 
if you used a lymann scale for the check you do not have the results you posted...cause the scale is not accurate enough....
we are right back at your first questions...
the scale is step 0.1 plus or minus accuracy.
just a waste of time.
if you insist on using a poor scale for "data" please just stop posting...it will likely always "prove" you right...lol
get a real lab scale if you want DATA on powder throwers accuracy.
been there , done that.....n133 DOES NOT THROW AT PLUS OR MINUS 0.1
mike in co
HFV said:
Steve, how iz ya? I ordered a new measure for a guy last week. He says he gets .5 gr. variations. I took it to my shack, w/133, first few I dropped, some were -.3 but never +. I removed the measure from it's stand and clamped it to the bench. I dropped 25 charges into the pan. Out of 1st 6, three were minus .1, 2 were -.2, the 4th was dead on. The next 9 were dead on, the rest were -.1 and - .2 w/couple dead on. I have it recorded on paper. I never dropped a charge (of the 25) that went over my 28gr setting.
I've noticed when weighing w/digital scale, I can't have any air stirring (air conditioner/fan) and get consistant readings.
The guy I bought it for, doesn't like the thrower, and will probably sell it. (digital scale I used to weigh was a Lyman similar to the chargemaster)
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mike in co said:
if you used a lymann scale for the check you do not have the results you posted...cause the scale is not accurate enough....
we are right back at your first questions...
the scale is step 0.1 plus or minus accuracy.
just a waste of time.
if you insist on using a poor scale for "data" please just stop posting...it will likely always "prove" you right...lol
get a real lab scale if you want DATA on powder throwers accuracy.
been there , done that.....n133 DOES NOT THROW AT PLUS OR MINUS 0.1
mike in co
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I fully agree w/you on the Lyman. I guess I could sell my food stamps a couple of months and get a Chargemaster.
Gold is in short supply 'round here. Accepting donations.
I sure wished they would produce one in yallar or even red. The Green is ugly,,, 'cept on March 17th.Thanks Mike for your professional/scientific help and input.
 
HFV said:
I fully agree w/you on the Lyman. I guess I could sell my food stamps a couple of months and get a Chargemaster.
Gold is in short supply 'round here. Accepting donations.
I sure wished they would produce one in yallar or even red. The Green is ugly,,, 'cept on March 17th.Thanks Mike for your professional/scientific help and input.
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IMO it is a great time to buy one. Natchez has a special and RCBS has a rebate right now a great time to buy one $230 after rebate if you buy a couple other items. See this thread

http://benchrest.com/showthread.php?82026-RCBS-Chargemaster-Rebate

Dick
 
actually , i was hoping it was helpful.
you are fooling yourself on accuracy when testing with an electronic 0.1 scale.
if you believe you are accurate to plus or minus 0.1 with a thrower and n133, you are confused...plain and simple.
that is the point i was trying to get across.
its well documented by those with accurate lab scales.
so yes save up some coin, starve the wife, and get the charge master when you can if you use n133.
mike in co
 
sort of a dumb post...cause it dont/has not happened...
there is more to COMPETING than precise measurement of powder......its one small part,,,,
like we said before, why give up the one small part if you can control it ?
mike in co
AndyTaber said:
So, Everyone at the match using a Chargemeaster are all tied for first place. Whats the tie breaker?
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Couple of questions for Mike in Colorado,
Do you weight you charges from your Chargemaster directly to your Lab Scale?
If so, how do you integrate it directly to Chargemaster?
At a bench rest competition or any other outdoor range environment (i.e. in the outdoor elements or inside a drafty building), How do you get your Lab scale to measure any more accurately than the RCBS scale or any other method? From all the literature I’ve read a Lab Scales must be in a very stable environment to have any more accuracy than any other measuring device.
I also think that an RCBS Chargemaster electronic scale has a +- of .1 to .2 grains, if so what’s to say it any more accurate that a thrown charge?
 
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