22/250 8"twist

[Ironworker]

My rifle seems to like 69gr Sierra TMK burning IMR4166 . 32.5 produced an average MV of 3325. But rifle seems to really like so far 36grs of IMR 4451 behind a 75gr A-Max . Started out with 33grs and worked up to 36grs. From 34grs up accuracy was great with all loads. 36grs average MV was 3228 under 1/2 MOA. Next out I'll continue with incremental powder increases . Also bullets .004 into lands. But .020 away for Sierra TMKs. Also burning these new "Eduron"powders copper build up has been greatly reduced .

 

[jmatters]

I dont have any chrono numbers, but running the 62 grain SS108 bullet on top of Reloder17 in my 9 twist resulted in observed ballistics roughly equivalent to 3600 fps, with no pressure signs at all. Fun stuff, eh?

 

[jmatters]

I dont have any chrono numbers, but running the 62 grain SS108 bullet on top of Reloder17 in my 9 twist resulted in observed ballistics roughly equivalent to 3600 fps, with no pressure signs at all. Fun stuff, eh?

OOPS! It was SUPERFORMANCE powder, NOT Reloder17!!

 

[missed]

I'm running 35 grains of 4451 at 3200 under a Berger VLD. I love it.

 

[Ironworker]

I'm running 35 grains of 4451 at 3200 under a Berger VLD. I love it.

What's your seating depths ?

 

[missed]

What's your seating depths ?

I'm actually jumping them 0.120". Yes that far. Dunno it's happy there. The barrel is throated where the base of the bullet was at the base of the throat.

 

[Ironworker]

Very interesting,I'm shooting 75gr A-maxes and I have them touching the lands. Brux bbl 8" twist