The Accurate Reloading Forums
338 Lapua Improved

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03 April 2011, 08:37
Tyler Kemp
338 Lapua Improved
100 grains Retumbo
300 grain SMK seated .01" off lands
3025 fps from 32" barrel.

Nice mild load Smiler


Love shooting precision and long range. Big bores too!

Recent college grad, started a company called MK Machining where I'm developing a bullpup rifle chassis system.

07 April 2011, 18:36
brandonland
What is the difference between the regular 338LM and the 338 improved? I use 85GR of Viht. N-165 with a sierra 250MK in a Lapua case. This works great for me in a 27 ½ barrel. I don’t know how fast it is going because I don’t have a chronograph, but it seems to be the most accurate load so far.
10 April 2011, 21:44
Tyler Kemp
The case is blown out for a 15ish grain capacity increase..leading to more speed!


Love shooting precision and long range. Big bores too!

Recent college grad, started a company called MK Machining where I'm developing a bullpup rifle chassis system.

15 August 2011, 09:27
kevan
My 338 Lapua Imp. prefers 110.0 gr. US869 under the 300 SMK.
I have loaded up to 112.5 of the same powder but the former amount provides better accuracy in my rifle..