Dick284
04-09-2012, 08:43 AM
I bought a box of Chinchaga .284", 155gr, RBT, ULD, CT's from Bob at Custom gunworx a while back.
I finally got out and shot some groups with them over the weekend.
I loaded them up for my stock Tikka T3, in 7mm-08, scoped with a leupold 3-9x40 VX2.
I tried 2 powders on Friday, with this one being a standout for group size.
http://i16.photobucket.com/albums/b28/Dick284/708chin155gp.jpg
This groups was shot from the bench in a hasty fashion to possible replicate shooting through a wind condition in a match scenario.
It was remove round from the MTM box fumble it into the ejection port, close the bolt, establish a sight picture with a predictable and repeatable hold and let fly, for 5 shots.
Then on Sunday I made it back out with more of the same loading.
http://i16.photobucket.com/albums/b28/Dick284/708chin155d2.jpg
These groups were shot under the same sort of shot to shot frequency as shot on Friday.
The aggregate group size is 0.92", which for a stock rifle and the shot string, and relatively low magnification.
(rifle usually wears a 12x scope)
0.63" to upwards of 1.15" on 3 shots.
I figure if I took a 5 or 10 group aggregate you'd see groups upwards of 1.5" to as low as 0.30"(one can dream).
With an average of anywhere from 0.75" to 1"
This is why a single group should not be touted as an absolute measure of a rifle or a load, you need repeatability, over repeated groupings.
Food for thought I hope.
I finally got out and shot some groups with them over the weekend.
I loaded them up for my stock Tikka T3, in 7mm-08, scoped with a leupold 3-9x40 VX2.
I tried 2 powders on Friday, with this one being a standout for group size.
http://i16.photobucket.com/albums/b28/Dick284/708chin155gp.jpg
This groups was shot from the bench in a hasty fashion to possible replicate shooting through a wind condition in a match scenario.
It was remove round from the MTM box fumble it into the ejection port, close the bolt, establish a sight picture with a predictable and repeatable hold and let fly, for 5 shots.
Then on Sunday I made it back out with more of the same loading.
http://i16.photobucket.com/albums/b28/Dick284/708chin155d2.jpg
These groups were shot under the same sort of shot to shot frequency as shot on Friday.
The aggregate group size is 0.92", which for a stock rifle and the shot string, and relatively low magnification.
(rifle usually wears a 12x scope)
0.63" to upwards of 1.15" on 3 shots.
I figure if I took a 5 or 10 group aggregate you'd see groups upwards of 1.5" to as low as 0.30"(one can dream).
With an average of anywhere from 0.75" to 1"
This is why a single group should not be touted as an absolute measure of a rifle or a load, you need repeatability, over repeated groupings.
Food for thought I hope.