Powder charge method

Discussions of powders, bullets and loading information.

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kwilliams
Posts: 103
Joined: Tue Oct 08, 2019 8:42 am
Location: Montana

Powder charge method

Post by kwilliams » Mon Dec 23, 2019 4:16 pm

I am wondering what technique the better match shooters use to charge their Straight wall cases for the best accuracy?
The weighed charge choices:
1. drop tube only
2. drop tube and compress with comp. die.
3. pour in and then compress with comp. die....accomplishes the same as #2?
I do not have a chrono to see what the deviation is between these methods.
thanks
kw

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bpcr shooter
Posts: 542
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Location: Madison, Wi

Re: Powder charge method

Post by bpcr shooter » Mon Dec 23, 2019 4:33 pm

drop tube and compress. It would be in your best interest to get a chrono, but you can always let the target tell you too....
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rgchristensen
Posts: 125
Joined: Sat Jan 16, 2016 10:51 pm

Re: Powder charge method

Post by rgchristensen » Mon Dec 23, 2019 10:54 pm

Years ago, I made the experiment of vibrating the charge down, then compressing, versus just dropping the charge and compressing it. On measuring the mean point of impact, velocity, and velocity SD, I found no difference between the two in any of these quantities. This was with a 40-65, Swiss 1.5 Fg powder, 418 gr GG bullet. Since then, I have not messed with a drop tube or vibrator, just dropped the charge and compressed it.
CHRIS
RGChristensen

kwilliams
Posts: 103
Joined: Tue Oct 08, 2019 8:42 am
Location: Montana

Re: Powder charge method

Post by kwilliams » Tue Dec 24, 2019 6:19 am

RGChristensen

I should of listed vibrating a charge as no.4 in past years I have known a few that use(d) the method. Depending on how it is done, it really settles the charge. Don't know if the consistency would be the same as a comp. die plunger though.
I too skip the drop tube on my non match rifle loads. If I could prove to myself the tube was not needed.......more extended range time for this rifle is needed.
thanks
kw

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