Well after spending a good 4 1/2 hours at the range today I finally got my load work up's shot. I was shooting a 45-70 csharps, with the lyman 537 grain postell. My brass is starline, and my primers we're win lrp. The reason for the load work up was the new order of old enynsford 2f powder I got a while back. I loaded up rounds in 2 grain increments with 59 grains of powder (which is nearly no compression) to 73 grains of powder which was 1/3 of an inch of compression (all grains are by weight) and shot them in groups of six.
The first target looked like this (sorry about the orientation)
The average velocity was 1116.3 ft/s with a sd of 8.1.
the second with 61 grains
The avg vel here was 1140.8 with sd of 8.2.
im going skip 63 and 65 grains because they weren't good so here is 67 grains
Avg vel is 1218.0 with sd of 11.4
and finally 69 grains
Avg vel was 1194.2 with sd of 9.0
im ging to skip 71 and 73 as well if you want to see the just ask and I'll post them.
ok so after all of that my question to Ya'll is which load would Ya'll stick with or give a chance. I'm probably going to load up some more rounds later of these four and see what I get then, but from this what do yall think. Another thing I noticed from the chronigraph was that from 59 to 67 grains the velocity steadly came up but after 67 it started to decline till 71 grains then the velocity came back up at 73 grains, Hopefully that made since. To me this seems odd I would have thought it would have steadly climbed the more powder I put in, only thing I can think of is that the powder liked the conpression up until 67 grains then didn't like it at 69 and 71 but liked it again at 73.
Ps. Don't mind a couple of the targets missing one round, the first one was my spotter to see where I was and the others I jerked on! And to keep the battle the same every time I wiped the bore clean before each set and blow tubed 5 breaths between each shot.