What did you do in the reloading room today?

[Rucker61]

If you are not seeing a difference in group sizes from one test load to another, something is off. It could be many things. Most common is the OAL is too short and you are jumping the bullet too far to see where the rifle is really wanting the bullet at a certain velocity.

When we first set up the OAL, we backed off 0.05" from the lands, but the cartridge wouldn't feed from the detachable Tikka magazine. Right now I'm at 2.177" to the ogive, using the Hornady Comparator. Don't think I can get too much longer and still feed.

Edit: and thanks very much for the advice. Given that the 150 will just be for goats and whitetails, I think I'll not worry about getting too hot. I'll just stick around 46 and play with .2 gr increments. My best three round group with 46 was 1.25" at 250 yards.