Originally Posted by bdan68
Not Swift data, but Speer has recently put out some new data and they have RL19 as giving the most velocity in the 338 WM with 225 grain bullets.

https://www.speer-ammo.com/download...er_338_dia/338_Winchester_Magnum_225.pdf


Guys,
Be vary careful when using this data and drop several grains back.
This is not intended to slander the data which will be fine "FOR THAT BULLET" which is short, with a small bearing surface. I found it could take powder charges up to 5 grains more that the 225gn Partition as a comparison because of that small bearing surface.

It was relatively easy to top 2900fps and come close to 3000fps in my paddle stocked Ruger of the day, but the old adage of start low and work up is prudent with using Speer Data that is applied to this bullet.
Let me repeat, this data is for the Speer 225gn Boat Tail bullet.

John


When truth is ignored, it does not change an untruth from remaining a lie.