taylorce1
Handloader
- Jun 3, 2007
- 1,080
- 0
Just picked up another Whelen and I have the .338-06 as well. Anyway I've been looking at the load data in the Hornady manual. Whelen only has three loads in the book 180, 200 and 250 grain. The 200 grain Whelen load used 57.8 RL-15 to get 2500 fps, the .338-06 use 57.1 grains to get 2900 fps. Now my .338-06 pushes the 200 grain bullet at 2880 using the 56.5 grains of RL-15.
Now it isn't until you get to 250 grain bullets that the .338-06 and .35 Whelen become equal. I just don't see with a slightly less than 2" barrel difference makes the difference. Will the twist rate difference cause the velocity change?
Now it isn't until you get to 250 grain bullets that the .338-06 and .35 Whelen become equal. I just don't see with a slightly less than 2" barrel difference makes the difference. Will the twist rate difference cause the velocity change?