OCW help and other load development on 6x55
Went to the range the other day with my new assembled 6br and did my barrel break in. I went out Friday to do my first OCW test.
1:8 twist 28in Mcgowen barrel
Lapua brass
Varget
CCI br primers
107gr Sierra MK .020 off the lands.
I plan on bedding and installing pillars this weekend.
http://i1287.photobucket.com/albums/...shjl2urjw.jpeg
I think 29.2 and 29.5 are my 2 loads to mess with. I am above the bull because right now my scope is out adjustment because I have a 20MOA base on my rifle. I did pull a couple shots lol....the 28.9gr load, i pulled and I pulled a round in the 29.8 gr group I pulled one. I think bedding and pillars will help the fliers.
I got to play with my 6x55 Swede a little bit too.
Didnt seem to be liking re22 and 105 Horndays so I changed things a bit.
Went to IMR4831 powder 87gr vmax and 107gr Sierra MK
Just did preliminary loads moving up .5 each round for 7rds.
http://i1287.photobucket.com/albums/...sz9gbmdxg.jpeg
This is with the Vmax, the one to the left was me, I pulled that shot. I was suprised at the vmax staying in the same general vicinity even with the charges going up. I worked up to 50.5gr and was only at 3340ish fps....not quite the speed I was hoping for.
http://i1287.photobucket.com/albums/...sssvxplmm.jpeg
This is with the 107gr Sierra MK. The bottom 2 shots were the 2 lowest charges then the last 5 seemed to group fairly well....again not quite the speed I was looking. 48.0gr only got me to 3000 for but the horizontal spread looks like it could be promising.
Any opinions or input appreciated!
Scooter