Joined
·
2,214 Posts
Hello everyone,
We've discussed previously the merits of weighing vs. throwing charges. I did a little experimenting to see just how much technique affects results. I have developed the habit over the years of "double tapping" the powder measure handle just before I throw each charge, in order to settle the powder in the metering chamber. Today I compared this method with simply throwing each charge to see if it really works. In short, it does!
With XMR4350, metering without the double tap produced weights up to .7gr above and .9 gr below nominal weight. When I double tapped I got no charges above and a lowest charge of .5gr below nominal weight. With the AA#5 I use in the .44 there was not such a noticable difference between the two methods; all charges were so close it was hard to measure any difference. With the 4350 I do not use any throws that hang up badly because they do vary quite a bit.
For reference, my scale is an RCBS 510 and my powder measure is an RCBS Uniflow, with a powder baffle pushed down as far as it will go. The charges I ran this little experiment on were 44.0gr of XMR4350 and 7.0gr of AA#5. Anyone having difficulty getting good thrown charges should try different techniques to see what works.
Also, my bench is rock steady and is bolted to the wall, and I'm sure that helps. IDShooter
We've discussed previously the merits of weighing vs. throwing charges. I did a little experimenting to see just how much technique affects results. I have developed the habit over the years of "double tapping" the powder measure handle just before I throw each charge, in order to settle the powder in the metering chamber. Today I compared this method with simply throwing each charge to see if it really works. In short, it does!
With XMR4350, metering without the double tap produced weights up to .7gr above and .9 gr below nominal weight. When I double tapped I got no charges above and a lowest charge of .5gr below nominal weight. With the AA#5 I use in the .44 there was not such a noticable difference between the two methods; all charges were so close it was hard to measure any difference. With the 4350 I do not use any throws that hang up badly because they do vary quite a bit.
For reference, my scale is an RCBS 510 and my powder measure is an RCBS Uniflow, with a powder baffle pushed down as far as it will go. The charges I ran this little experiment on were 44.0gr of XMR4350 and 7.0gr of AA#5. Anyone having difficulty getting good thrown charges should try different techniques to see what works.
Also, my bench is rock steady and is bolted to the wall, and I'm sure that helps. IDShooter