270W Ackley improved. .270 fans, come on in.

[Will Henry]

Many years ago, I rechambered a 270 to 270 Ackley. The standard 270 was able to get about 2950 with 150's (H4831). Any more and primer pockets got loose. The AI was good for just over 3000 with the same bullet. I rechambered to 270 Gibbs ( similar to the AI but with the shoulder blown forward quite a bit) and it would push 3100. I set it back and rechambered for the 270 Weatherby (with a shorter than standard throat) and got over 3200. FWIW. WH

 

[msalm]

Recently put together a 270-08 AI…have to get back around to playing with it. Lost interest after the primed brass I got a deal on provided some misfires…dang it.

 

[Rick300]

A straight 270 with 150 Partitions is magic sauce. I'm sure it would be even better with the improved version

 

[long40shot]

I saw a guy has a new 270 blank for sale in the classifieds.

 

[Ramblerman]

I chambered up a McGowen barrel that they sent me with the wrong contour (that guy is gone now, thankfully), so I recontoured it on the mill with an end mill and a dividing head....as I hate contouring barrels and thought this might suck less...it didn't, but it turned out "interesting ", cosmetically....its a pushfeed M70...haven't shot it much, but need to do some more work with it and get it dialed. Love the Ackleys though...as they just look "right".

 

[10XSHOOTER]

That would be great!

I have a Clymer .270AI reamer and guages.
$175.00 for all!
Reamer has cut only one chamber as far I I know.

 

[Anchorite]

I did a 1x8 PacNor right before the 6.8 was announced. I was already planning on tinkering with heavier bullets. Have thus far found, and been satisfied with the 140-145 weights. I think that’s the sweet-spot for the standard 270.