Cayugad-? on Volume to Actual Wieght for APP and Trip7
 

Cayugad,

I measure By Volume by tapping the powder measure 10 times to make sure it's as full as it can be, before I wieghted out my charges.

My old Powder measure and powder scale tells me that the conversion factor for APP/Pinnacle/Gold 3Fg is:

.92 x By Volume Grains= Actual Wieght so .92 x 100BV= 92 grains AW

And Trip7 2Fg is:

.80 X 100BV = 80grains AW

Is this pretty close to your powder wieghts? Just wanted another point of view/example to bounce my findings off of.


Underclocked

Go ahead and chime in with your stats too. Am I close to what you've found for Trip 7??


Thanks Guys

RE: Cayugad-? on Volume to Actual Wieght for APP and Trip7
 

I've never weighed my charges on a scale. I have been meaning to get a scale for that reason but I still depend on the powder measure. Also I am not a tapper. I must say your results are interesting. I hope Underclocked and others do jump in on this. It would be most interesting.

I forget who now, but they were telling me that if you weigh pellets from the different companies, it might surprise you how much they differ in weight also...

RE: Cayugad-? on Volume to Actual Wieght for APP and Trip7
 

Thanks

Hope to verify this data.


BTW, I made the mistake of buying the Trip7 at walmart for $9.00. Went out and shot some loads today...man, what a crud battle! In my 45cal Elite, could not even get a second shot off with Powerbelts without swabbing[:'(]

I'm such a sucker for a good deal[&:] Will be giving this stuff away pronto[:-]

Back to the good old APP products next time at the range;)

RE: Cayugad-? on Volume to Actual Wieght for APP and Trip7
 

I was shooting loose Triple Se7en in my Disc rifle and noticed a slight crud ring also. I honestly never tried loading two in a row without a swab because I was testing some of the new Speer bullets in it and wanted a fair test.

That's pretty shocking when you could not follow up with a powerbelt. You must really get a crud ring big time. I have some Black Mag3 and some APP 3f coming to try out. Should be some interesting testing.

RE: Cayugad-? on Volume to Actual Wieght for APP and Trip7
 

There's only one basic problem with what you are doing, butit's a big one. Substitute powders can vary significantly in weight-to-volume ratios from lot to lot, and the powders are made up and mixed to give a certainlevel of performance PER VOLUME MEASURE rather than by weight.

For example, when it first hit the market, it was stated that 100 grains of Pyrodex RS by volume measure weighed only 80 grains (20% more shots from a pound!!). Yet recently, I have heard that 100 grains (vol) of Pyrodex RS weighed 70 grains. If so, that's quite a variation from batch to batch! Thisindicates to me that if you are WEIGHING your charges, the amount you weigh outthis month is going to be quite different in performance from what you weigh out next month from thenext batch.

So if you find a good load, you need touse a volume powder measure to keep your ballistic performanceconsistent, because WEIGHING IT is NOT going to do so!!

Weighing black powder, or a BP substitute, to within 1/10 of a grain is a wasted effort anyway. To prove this all you have to do is chronograph say, a 100-grain load with your favorite bullet, then add 10 grains more powder and see how much the velocity changes. At this load level, I'd be surprised if the typical rifle gave more than 30 FPS more velocity by adding an additional 10 grains of powder (110 grains vs 100 grains). This equals 3 FPS for each additional grain, or 0.3 of a foot per second for 1/10th of a grain. I am able to throw charges withing 0.5 of a grain with my volume measure, using it just like you do. Except I only tap five times to settel the charge. I found that more than five taps did not make the powder occupy less volume in my measure.

The charges used to shoot these 100-yard Hawken rifle groupswere measured with a volume measure.

RE: Cayugad-? on Volume to Actual Wieght for APP and Trip7
 

eldeguello

Very good message - and for my part right on point.

Shooting paper for competition or money I might weigh charges, but further I would always use powder from a new can. Establish a weight for each new can, amoung other things + you will need to factor in the law of deminishing returns when you start reaching your peak load - not necessarily your most accurate load at that point.

RE: Cayugad-? on Volume to Actual Wieght for APP and Trip7
 

Very good point. While not all BP substitutes are the same, I read somewhere that loose Pyrodex is more consistent over the chronograph measuring by volume than it is measured by weight. Some of these new powders may work better by weight . . . good subject for someone to explore - who has some time, a chronograph, and a warm place to shoot [8D]

RE: Cayugad-? on Volume to Actual Wieght for APP and Trip7
 

That's what I've found. 4 or 5 lots now and all my results give me 80 gr or close enough to use 80 gr as a rule. I might have to move a few clicks on the scope between lots but that's no biggie.

I've never tried AP so I can't help there.

RE: Cayugad-? on Volume to Actual Wieght for APP and Trip7
 

cayugad,I weight checked some App Sticks and I wassuprised at the amount of differance between them, up to 4 gr. So I used them today at the range and they shot good groups anyhow. Do you know how much it takes to put a flyer out of the group? Lee

RE: Cayugad-? on Volume to Actual Wieght for APP and Trip7
 

We discussed that once before about why weighing charges should be better then going by volume. And someone (I forget who) said that even 5 grains difference should not be the end of the world in terms of accuracy, so a volume measure should work as good. Then we got into the tapper versus the cutting charge measure person. So I really do not know what the answer to that would be lemoyne. I think that as long as you try to stay consistant you should have good accuracy once you find your load. I am surprised that the sticks were that much off though. I would have guessed 2 grains at the most...