Thanks all for the responses!
Bigrich,
I hear you! But I can't stop now......
I told an old friend that I would stop load development when I got under 1/4 MOA. I was stirring him up because his AR-10 chambered 6.5CM will not shoot that well. So when I told him I had got under that number- he stirred me back by sending the article about the Houston shooters- knowing it would drive me nuts and make me not stop trying to achieve smaller numbers. He knows me well. We did the same thing through 6 years in the Marine Corps together and it drove us both the achieve some difficult goals, and have some competitive fun along the way. e.g. I abseiled off of a 4 storey building bouncing only 3 times, so he did it in one bounce. I then took about 3 meters of slack line and jumped off the roof instead of leaning out ( it's harder than it sounds) . He then took 5 meters and did the same.......etc. We survived each other but only just, and it was like that almost every day for 6 years. It was fun......and surprisingly my body is still able to produce adrenaline- it really should have run out by now.
So......I will be satisfied when I get a reliable sub .1xxx MOA groups now.......
9.3x64,
It looks to be turning into a target rifle.
I have loaded 10 rounds, starting at 37grains of AR2209 and incrementing .5 grain up to 41.5. That is the range for a Hornady 140grain A-Max according to ADI load data. 140 grain ELD-M's so it should be similar to the A-Max load.
I am using 40.1 grains of 2209 with that 140g ELD 20thou off the lands- So starting at 37 grains on the lands sounds safe. Thanks for the advice!
SCJ429,
I have about 180 140grain ELD's ready to load in a bin- they are all from the same batch. I measured all of them base to ogive and the max delta I found was 1 thou. I am not seeing the same problem that you did. (I zero'd the verniers on the first one- it would be good if you could let me know if you are measuring differently....)
- 140gnELD-M.jpg (1.17 MiB) Viewed 1553 times
What bullets were they? What sort of delta did you see between rounds? Were they all from the same batch?
A colleague bought 1000 of these for $490 (!) from a reputable QLD dealer. They all came loose in ziplock bags. I missed that deal and bought some from a Sydney dealer for $58 per 100. I bought 1000 total and they came in boxes of 100 with the lot number on each box. I managed to get 2 lots, 4 boxes of one lot# and 6 of the other lot #. Did you get them in boxes or bags? My thinking is if they were bagged you may be getting the "floor sweepings"- which is why they cost so little.