300gr. Sierra bullets

[X-Rap]

I'm looking for some good data for loading the 338-378 with 300gr. Sierra bullets, my books only show up to 250gr.
I am currently using H1000 with 200 & 210gr. Noslers but want to do some distance shooting.
Any sources/links as well as alternate powders for the bigger bullets would be great.

Thanks.

 

[GooseGestapo]

e-mail hodgdon or call Sierra. Either should be able to help you. I've got a good bit of data for the .338-378 but it tops out with the Swift 275gr bullet.

My two .338's are based on smaller cases so I can't really help you.

 

[375shooter]

I'm looking for some good data for loading the 338-378 with 300gr. Sierra bullets, my books only show up to 250gr.
I am currently using H1000 with 200 & 210gr. Noslers but want to do some distance shooting.
Any sources/links as well as alternate powders for the bigger bullets would be great.

Thanks.

You can get some loading data for your combination here.
http://data.hodgdon.com/cartridge_load.asp