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General Categories => General Firearm Discussion => Topic started by: bkoenig on December 20, 2013, 10:38:31 PM

Title: Extreme accuracy testing - secrets of the Houston warehouse
Post by: bkoenig on December 20, 2013, 10:38:31 PM

Here's a very interesting article from a few years ago.  Short story:  some guys set up an indoor 100 yard rifle range and set about figuring out what was needed to make a benchrest rifle shoot perfectly - we're talking about several shots through the same hole.  Not one ragged hole, all shots through the exact same circle. 

They had some interesting findings that sometimes run counter to what a lot of people believe about accuracy:

- Powder charge really doesn't make much of a difference
- Primer type doesn't matter too much
- Bullet seating depth and eliminating the jump to the lands is very important
- Case neck tension is probably the most important factor

The blog linked below has a link to the original article:

http://precisionrifleblog.com/2013/10/18/secrets-of-the-houston-warehouse-lessons-in-extreme-rifle-accuracy/ (http://precisionrifleblog.com/2013/10/18/secrets-of-the-houston-warehouse-lessons-in-extreme-rifle-accuracy/)

Title: Re: Extreme accuracy testing - secrets of the Houston warehouse
Post by: AWick on December 27, 2013, 10:55:53 AM

Nice! That is really interesting and if a person really thinks about each and every action and reaction, logical. The case neck retention, coupled with seating depth and contact with the lands, are the forces it takes for the pressure from powder ignition to release the bullet down the pipe. With the ammount and shape of the powder you will always have a variance with how much combusts before the excess is thrown out of barrel unignited.

I might haveissed it, but how crucial was barrel temperature? Were five shots few enough that they didn't get that much of a temperature differential from format to last shot?

Thanks for the post!