No1_49er wrote:I'm puzzled.
Are you saying that you are going to disregard a SD of 1.7 (ES 4.5) because the data from either side of that load showed a difference larger than you would rather see? If it were me, I'd revisit that load to confirm (or otherwise) the data. You're going to disregard the potential for gold, in favour of pot-metal that surrounds it?
Irrespective of your data, none of it has any meaning unless it is backed up by group sizes. From the 12 sets of data, where are the groups that go with them? Did you even put the shots on paper, or just over a chrony?
Surely, load developement is about finding what performs best in your rifle, by which I do not mean velocity, which counts for zip, if he group size matches a barn door.
yeah generally speaking from what I have seen you will alway get a crazy good SD with a specific load but even .2 grains difference either side takes you close to double digits, this would be good if you would do open F class and you can adjust the load but my thinking is if I'm shooting at night at 2-5 degrees and during the day at 40 (or more as the cartridge will hit 50) degrees then I wanted something that has a bigger window, trust me if I would compete I'll take whatever I can get!
anything in singe digits SD did .7 MOA at 100 and covers at 50, it is a big hole with the 45-70, I use a 1-6 so even at 6x at 100M with a lever gun with a short 16" barrel you will struggle to get .6 moa
anything over say 12SD is still sub MOA, the higher than 20 were meh, and some were in the 30's and 40's were all over the shop
are these primers better than CCI probably not, I use Large Pistol Magnum Primers (CCI 350) and these Indian primers give you about 5fps more
so far no issues but yes they are a bit harder, when you decap in my case the CCI breaks in half like the anvil separates from the cup, with these ones it comes out in a single piece. I see no difference compared to the CCI on the feel when you hand prime.
I think the sample size of 4 shots is ok, the groups match what SD so from my end this allows me to have sub MOA lever gun and shoot it cheaply and I don't have to think about blowing through primers