Sub Sonic 220gr Sierra Pro's

[AlcoholicusMaximus]

Originally Posted by redtazdog

.
I changed bullet seating depth with the round nose until
I found the wave to ride then the groups were as good as the 220 match
bullets.

Excellent! What length barrel? Did you use more or less powder? Subsonic?

[egraham]

In my remington 700 action and douglad barrel i am seating them as far as the magazine will allow. there is a considerable amount of jump for the round nose bullet.

The amax is a lot longer and therefore seats a lot closer to the lands so I think that is why it shoots better.

[redtazdog]

Originally Posted by AlcoholicusMaximus

Excellent! What length barrel? Did you use more or less powder? Subsonic?

10 inch and 16 inch barrels, I start with subsonic loads at 1050 fps.
You can change powder charge to time the bullet when it leaves
the barrel or you could time the bullet by changing the oal (bullet seating depth)

[AlcoholicusMaximus]

I went with a Model 1 sales 10.5" AR15 barrel. My maximum OAL with 220 SMK's is 2.191". I might not have enough room for the Pro Hunter.