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.
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.
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.
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
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