I checked both my oldest and newest, (6th Edition), Sierra loading manuals, and neither show any loads for 150 Gr. bullets. I'm not sure Sierra ever published loads for 150 Gr. bullets in the 6.5 X 55 MM. They do for the larger capacity 6.5's, like the 6.5 X 47 Lapua, and the 6.5 Creedmoor. But nothing for 150 Gr. bullets of any type in the 6.5 X 55 MM.

 

Many thanks for checking and your prompt reply. I use Vihtavuori N160 behind 123gr and 139gr Lapua Scenars but the throat in my new 29" Sassen (UK) barrel is very long, so the jump especially with 123s is huge!

 

I've consulted both my oldest and most recent (6th Edition) Sierra loading manuals, and it appears that neither of them contains any load data for 150 Gr. bullets in the 6.5 X 55 MM cartridge. It's possible that Sierra has never published such loads for this specific cartridge. However, they do provide load data for 150 Gr. bullets in larger capacity 6.5 cartridges like the 6.5 X 47 Lapua and the 6.5 Creedmoor. Unfortunately, there seems to be no information available for 150 Gr. bullets in the 6.5 X 55 MM cartridge from Sierra. read more and can check this ff advance server download

 

It seems Sierra has never published such loads for this specific cartridge. However, they do provide load data for 150 Gr. bullets in larger capacity 6.5 cartridges like the 6.5 X 47 Lapua and the 6.5 Creedmoor. Unfortunately, there seems to be no information available for 150 Gr. bullets in the 6.5 X 55 MM cartridge from Sierra. for more information you can check this ff advance server downloads.

 

It appears that Sierra has never published load data for this specific spike cartridge. However, they do offer load data for 150 gr. bullets in larger 6.5 cartridges like the 6.5x47 Lapua and 6.5 Creedmoor. Unfortunately, there is no available information from Sierra for 150 gr. bullets in the 6.5x55mm cartridge.

 

Have you tried to contact Sierra directly, they might have something for you?

Contact Us

www.sierrabullets.com

 

Many thanks for checking and your prompt reply.