I loaded up 100 test loads for the new E.R.Shaw 26" varmint contour 7mm/08 barrel I put on my Savage 12.
I used 140gr Nosler Combined Technology Ballistic Silvertips and 4 different powders.
I have really good luck with these bullets in my 25/06,308,30/06,and 300WM,and was hoping that the 7mm/08 would like them as well.
They shot OK,and there are a couple loads that I'll play with,but I wasn't really impressed with most of the results.
These were all 5 shot groups,shot at 100 yards. 2.832"oal-.020 off lands
43.5gr = 1.216"
44.5gr = 1.230"
45.5gr = 1.070"
46.5gr = 0.930"
47.5gr = 1.971"
I'll play with the 45.5/46.5gr loads a little,and see if I can get them to tighten up some.
37.5gr = 1.111"
38.5gr = 1.402"
39.5gr = 0.632"
40.5gr = 1.194"
41.5gr = 1.737"
The 39.5gr loads shot good,and with a little tweaking,I should be able to get them shooting where I like 0.500" or less.
45.0gr = 0.731"
46.0gr = 1.048"
47.0gr = 0.769"
48.0gr = 1.106"
49.0gr = 1.184"
I'll have to chrono the 45.0 and 47.0gr loads,and if the velocity is where I want it to be,then I'll play with them to see if they can shoot better.
42.0gr = 1.338"
43.0gr = 0.567"
44.0gr = 1.622" I blew this group,the first 4 shots were 0.649"
45.0gr = 1.161"
46.0gr = 1.137"
The 43.0 and 44.0gr loads shot pretty good,I'll try them with some different primers and see what they'll do.
I'm sure that a lot of the group sizes will shrink with more shots down the tube.This barrel had only had 10 break in shots down it before I shot these groups.The barrel cleans really fast,so it should come around pretty easy.
I've got some 139gr Hornady Interlock bullets,and 140gr Sierra Gamekings to load up and try next.
I also did some testing with my 458 SOCOM.I worked up a good load using a 300gr Nosler C/T Ballistic Silvertip a while back,and I wanted to try some different bullet seating depth's.The standard oal of these bullets is 2.025",but it seems to be seated too deep to me.My rifle shoots these loads great,usually around 0.750" groups at 100 yards.
I increased the oal in .025" increments up to 2.200".My results weren't very good,most of the groups really opened up,but you never know until you try.
A while back I loaded up some 55gr Nosler B/T bullets for my 223's,so I took my Savage 12FLVSS to the range also to see how it likes these.
I loaded these with H335,24.0gr and 25.0gr.The Savage didn't really care for the 24.0gr loads,but the 25.0gr loads shot good.
24.0gr = 0.905" & 1.037"
25.0gr = 0.680" & 0.500"
I'll try these in my RRA 20" varminter,and see how it likes them next time out.