long action ideas

[scope eye]

Hey calib No I bought my WBY brass first, an thenI found out you could use these calibers :'( I resized a few 300 and 7mm and they chamber just fine I am now resizing 264 WM it looks like it will work I will let you know,

Tanks Dean

[nsaqam]

Hey calib here's a dirty little secret for ya, you can make 257 WBY brass with 300 Win Mag or 7MM Rem brass, Shhhh don't tell anyone ;)

Tanks Dean

Ps I was chronoing my 264 Win Mag this weekend with 26" barrel and 10 Twist, with 85gr Sierra's and 72gr of hybrid 100v and was getting over 4100FPS with NO signs of pressure, guess what more powder is in my future, I would not be one bit surprised if I make it to 75gr I will let you know ;D


Wow, I just ran your load through Quickload with the 85 Sierra and a seating depth of one caliber (.264") and I came up with over 88,000 psi for the 75gr load and 76,628 psi for the 72 gr load.

Every chamber is an entity unto itself but.........

[scope eye]

I $hit you not when I say not even a flat primer no hard bolt lift nothing even when I resized them they went smoothly in and out of the die??
Steven's action nothing special.

Tanks Dean

[scope eye]

Hogdon has on there site 69gr of 100v and 3863FPS 24" barrel and 62500PSI, so no way that three grains of powder raises the psi by 14000 especially with a light 85gr bullet, and add to the fact that 100v is on the slow side.

Tanks Dean

[nsaqam]

I'm not doubting your experience at all.
I just adjusted the weighting factor to the Hodgdon numbers (62.5K at 3850 fps with 69gr) you cited.
I then increased the charge to 72gr and the pressure went to 72K at just about 4000fps.
Jumped the charge up to 75gr and pressure is 83K for 4118 in a 24" tube.

Added two inches of barrel and the 72gr load shows 4062 at 73K.

Like I said, every chamber is an entity unto itself but three grains is going to raise the pressure about 10K.

[scope eye]

Thanks for the data when I screw around with velocity, I always use light bullets they spike less, I can only imagine what the numbers would be with heavier ones, my first shot was 4100 2nd 4110 3rd 4115 FPS it's a 10 twist opposed to the usual 9 that's worth a few fps.

Tanks Dean

[kslefty]

Calib I also have a 6-06 AI and found data to be a bit scarce. I have used 240 Weatherby loads and always have to bump up from there. I also interpolate from 25-06 AI data in my sierra manual using the next heavier bullet weight. I have only shot mine about 70 times but it sure is fun. I used a 30" blank, had it threaded an extra inch, and finished out at 28.25". This way if I burnt it up developing loads I could have it setback and rechambered.

[calib]

is the 6-06ai same as 240 weatherby?

[nsaqam]

Close but the 6-06AI has greater powder capacity than the .240 Roy.

According to Ammoguide the 6-06AI holds 69.3gr of water and the .240 Roy holds 62gr.

[kslefty]

I should have clarified a bit. I use the .240 weatherby data to fireform with and second firing is loaded past the .240 data. I have never really wrung mine out, only loaded 70gr fireform and 90 and 95 gr bullets for group.