Zoo,
Before I begin I want to make it clear that this is the load I made up before Swift came out with their first loading manual. At the time, about 8 years ago the swift people told me it was Ok to use the Speer, Hornady and Nosler Manuals. This is what I did and carefully worked up a load over my Chronograph. With the these manuals I was one to two grains under max.
I just purchased the new Swift Loading manual and find that the load I am presenting is 2 GRAINS OVER MAX. I have never gone over max on any of my loads. I have no intention of pulling these loads as I have already shot over a box of them under different tempuratures (10-75 degs)without any ill affect and resulting in great accuracy. Case life has still been good and no sticky extractions, shinney case heads, etc.
If I was to load up a new batch I would start over and work my way up using my chronograph to indicate excessive pressure signs. Sometimes lots of powders change a little. In my case I will not be doing this for a couple of years as I still have about 40 reloads left. So here goes:
Load: 250 grn Swift A Frame
WW 338 cases
Fed 215 primer
70 grains of Rel 19 ( 2 grains over max -according to the Swift
Manual)
COL: 3.258 -3.270 inches (this will vary from rifle to rifle)
Note: I get 2670 FPS out of my 26 inch Mod 70 Winnie and very little shot to shot deviation. AGAIN I want to reimphasis that 68 grains is MAX according to the new Swift Manual and I don't reccomend going above it.
On the other hand, as for myself and loading a new batch, I would now work my way (slowly) back to my load of 70 grains --but only with the use of my chornograph watching out for any unusualy signs.
Another thing to think about is I live in Alaska and rarely see over 85 degree temperature. I would never take these loads down somewhere the temperature gets in the high 90's and above.
Hope this helps..........Balto
