Thread: Think I've sussed the 284

Originally Posted by Rock river arms hunter

It was reamed to be 10 thou off the lands at 3.252 COAL so I just went down to 3.200 as it's a nice number and basically 50 thou. Took advice from a few mates with more experience both on here and off re seating depth. I just like believing in results that speak for themselves if that makes sense?

To be fair I think I did get a bit group happy so it could've been tighter on my end.

I started from a short COAL with that projectile (in a 7mm08 that is), but I'm interested to see what pushing it a bit closer to the lands would do. It's shooting ok, but it's currently about 150 thou off. Think I've got a little bit more room in mag left to play with. The question is how much to move it to see a measurable difference, and how many shots to verify it's actually better!

Looks like in your case, moving it over a mm seems to have made a marked improvement. Be interested to see any follow-up groups to see if they also track similarly.

Originally Posted by earplay

I started from a short COAL with that projectile (in a 7mm08 that is), but I'm interested to see what pushing it a bit closer to the lands would do. It's shooting ok, but it's currently about 150 thou off. Think I've got a little bit more room in mag left to play with. The question is how much to move it to see a measurable difference, and how many shots to verify it's actually better!

Looks like in your case, moving it over a mm seems to have made a marked improvement. Be interested to see any follow-up groups to see if they also track similarly.

@earplay well funnily enough it might be a give away but I do also own a 7mm08 bushpig model 7. From memory it's a COAL of 2.780 with 160gr tmk doing 2413fps and absolutely snots anything.

I'll follow up with another 5 round group in the coming days to confirm today.

Getting back to my 7mm08 I don't know what the jump is it's just a case of so to speak or seating to mag length and it's .3 MOA. Hitting the gong at 475y is easy with it.