Thread: Testing a conventional approach to load development

Originally Posted by c-dog

Just done a quick load development in a howa mini and was quite happy with the results, had to break up the groups as the mirage was a bit of an issue.

Checked length to refiling and dropped back 2mm to suit ease of mag feeding.

Started .5 grain above minimum and .5 grain increase until 25.5gr. 26gr was max in the adi for 69gr sierra hpbt and I am using 69gr targex. Loaded 12 rounds at 25.5 worked up looking for pressure, one over the chronograph and the last 10 into a group (would have liked to put them all over the chronograph but it was in use) mirage became an issue at about 4 rounds so had to space the shots out. I also used this range session to mount a scope (used some sako factory ammo for sight in)

I don't have the app used above but looks about 19mm outer edge to outer edge at 50mm high at 100m.

Going to load up 30 or so to put in the safe ready to go hunting then have a play with the other new brass and see if I cam get the 80gr eldm to work. In the same rifle (although i think it will be too compressed to work in the mag)

Attachment 273557

The 69 targex always shot well and I think that was the magic load.
I can't remember if I tried 80grn Targex or not but they should shoot ok.
I never had any luck with the 80 ELDM in either of my rifles with 1-8 twist barrels.

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