Posted by Les Fraser on
URL: http://oldforum.flyshooter.com.au/load-testing-question-now-with-part-2-tp5707756p5707765.html

great to see the detail on your load development the best load from the pictures is the 30.8 because of it's vertical dispersion. I shoot 4 shot groups at 300m and ignor 1 shot that is out of the group. also the flatest in vertical is the best group as width wise has no bearing on accuracy if the group is 3 inches wide but 4mm in elevation this is a much better load than one that is 25mm round and in the centre. Rifles don't shoot wide groups this is caused from the conditions so discount this and look for the flatest in vertical.

A magno speed or anything that attaches to the barrel is going to cause you problems because it changes the barrels harmonics. So do the load development then check the speed. Speed is not accuracy it is an indicator of what node you are on either the high pressure accuracy node of the low pressure. Remember pressure is speed and high speed is high pressure and quicker barrel errosion

Another factor to consider is try and identify parameters when you are doing your load development such as temperature and humidity as both of these have a much greater effect on load deveopment than anything else.

I like to do my load development in the afternoons as i have found that doing them in the morning when the air density is greater causes more inconsistencies.

just my two cents worth