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what causes accuracy

Posted: Tue May 06, 2014 8:04 am
by bruce moulds
last sat I shot my 6.5 super lr with pleasing results.
cases are win 243 necked up, and bullets had about 0.004 runout. cases were not cleaned, other than to clean the necks for sizing.
they were flsized, fairly drastically for the chamber, having at least 0.003 clearance at the shoulders.
bullets were straight out of the box and unpointed.
I have now sold my pointer. charges were weighed on a redding balance scale.
of 20 to count, all but 1 shot had xring vert, and one was a bit high in the 6 ring.
I cannot aim and shoot better than this.
so what made it shoot.
firstly the aiming was better than it has been for ages, making for better shooting.
secondly, the shot count ticked over 400 during the second 10 to count. the barrel has really settled down.
thirdly, a cleaning regime has been established that gets the barrel not too clean and not too dirty to perform.
it is matter of addressing the issues that really exist, rather than unimportant trivia.
keep safe,
bruce.

Re: what causes accuracy

Posted: Tue May 06, 2014 9:19 am
by DaveMc
bruce moulds wrote:firstly the aiming was better than it has been for ages, making for better shooting.


All of the above but don't underestimate this one. We can drop from 6 ring vert to x ring vert here in the late afternoon when the image (and low level thermodynamics) settle down. This can be demonstrated quite dramatically.

Don't expect awesome elevation in difficult sighting / heavy mirage. It can happen when you get a lucky break but not often - just too much going on with image movement as well as temp fluctuations etc.

Posted: Tue May 06, 2014 10:08 am
by jasmay
Everyone has a different recipe for accuracy, its about what works for you, not the guy shooting next to you.

Posted: Tue May 06, 2014 10:33 am
by DenisA
I think the main fundamental rule to accuracy is the bullet exiting the barrel at the perfect time. All barrels can surprise if tuned properly. Many factory barrels I've seen have been tuned to shoot <.5moa at 100y. They may not be competition winners, especially at the longs, but its an example of minimalistic process delivering good results.

A great barrel is the second most important factor that amplifies the above results.

Posted: Tue May 06, 2014 1:53 pm
by Brad Y
Brass, bullets, barrel, bedding...

Posted: Tue May 06, 2014 2:30 pm
by johnk
and balls.

Posted: Tue May 06, 2014 3:03 pm
by jasmay
johnk wrote:and balls.


Does it help to cradle them?

Posted: Tue May 06, 2014 4:18 pm
by johnk
You wish.