Powder/load data for 338lm/berger 250otm

[bodywerks]

I really haven't found a wealth of info on successful real world load data for this combo and I'm hoping I didn't waste my money on these. Ballistically, they are WAY flatter flying than the 300gr otm out to 1200 or less when compared to my current load of 300s under 90gr retumbo, flying at about 2700. From what little I read I should be able to get 3000fps pretty easy on the 250s out of my 29" barrel. Question is, what powder should I use and how many grains to start? I have retumbo, h1000, h4831sc, and h4350 on hand. I will consider other powder options but I prefer extreme powders for the desert environment I live in.

PCR/XLR/TAC338 http://i813.photobucket.com/albums/zz53/bodywerks/IMG_20130816_111453_255_zps1b498f0d.jpg http://i813.photobucket.com/albums/zz53/bodywerks/IMG_20130816_111325_951_zps290ebdd0.jpg

 

[bodywerks]

I guess now i know why I'm not seeing much data on these - guess nobody is running them

PCR/XLR/TAC338 http://i813.photobucket.com/albums/zz53/bodywerks/IMG_20130816_111453_255_zps1b498f0d.jpg http://i813.photobucket.com/albums/zz53/bodywerks/IMG_20130816_111325_951_zps290ebdd0.jpg

 

[sinister]

You can use Berger data (which runs a little slow in a TRG-42): http://www.bergerbullets.com/Reloading_Data/338Lapua250gr.pdf and http://www.bergerbullets.com/Reloading_Data/338Lapua300gr.pdf

I prefer to use Hodgdon Retumbo data off their site (you'll have to interpolate data since they don't have specific Berger charges): Cartridge Loads - Hodgdon Reloading Data Center - data.hodgdon.com

 

[bodywerks]

Thanks for the Berger link. I think i didn't go that route because, as you say they are way conservative, and i believe i only have one of those powders.

PCR/XLR/TAC338 http://i813.photobucket.com/albums/zz53/bodywerks/IMG_20130816_111453_255_zps1b498f0d.jpg http://i813.photobucket.com/albums/zz53/bodywerks/IMG_20130816_111325_951_zps290ebdd0.jpg

 

[bodywerks]

The closest thing on hodgdons site is a short bullet. If they are compressing with those then the Bergers would crush grains!

PCR/XLR/TAC338 http://i813.photobucket.com/albums/zz53/bodywerks/IMG_20130816_111453_255_zps1b498f0d.jpg http://i813.photobucket.com/albums/zz53/bodywerks/IMG_20130816_111325_951_zps290ebdd0.jpg