6mm at 900 yards

[mitchellchandler_au]

Hi all,

Yesterday I shot my 6mm br at 900 yards i got a group of around 7 inch vertical and 2 inch horizontal one 5shot group had 4 shots in 4inch group with one going low to open it up to 7 inhes long.
What sort of groups should I be looking for at this distance?

thanks,

 

[Cheechako]

mitchell

I guess it all depends on what your rifle/ammunition/skill consists of. If it's a long range Benchrest set-up, under good conditions it should be capable of 5-shot groups well under 3 inches. The world record NBRSA and IBS 5-shot groups at 1000 yards are right at 1.5 inches. Using that as a best-case scenario, the groups you should expect from your rifle will increase in size in relation to your equipment and your ability.

Ray

 

[Kodiak99317]

Hi all,

Yesterday I shot my 6mm br at 900 yards i got a group of around 7 inch vertical and 2 inch horizontal one 5shot group had 4 shots in 4inch group with one going low to open it up to 7 inhes long.
What sort of groups should I be looking for at this distance?

thanks,

Nothing wrong with those groups Mitchell, so many variables from wind to position. If you are getting 7 in of verticle of a bench and rest with flags and did not get caught by velocity changes, then you may need to turn your load a little more, either more powder if your not max'd out pressure wise, or more or less neck tension or more into or out of the lands, something will work, there are many ways to tune, but on ly one change at a time. If you did have a head or tail wind and were just missing velocity, those are very good groups indeed. What bullet and design you using?

 

[mitchellchandler_au]

Hi kodiak,

Iam shooting off the ground with a front rest and rear bag. The projectile iam using is the 105 A-MAX seating on the lands for a velocity of around 2870 and an ES 29 fps I have tried seating the into the lands but no dice but set .20 of the lands the ES have came down to around 19 for ES with a loss of around 25 fps so I will try them at 900 next chance I get. At 100 metres the groups run around .250-.350 and at 300 yards will do 1 inch without much problems.

Thanks,
mitchell