I recently started a post on Sierra 215s 338 cal that I shot out of my 338 WM that did not expand at around 2400fps. They were pretty accurate out of my rifle and the last few times out I had 100% hits on 12" metal gongs out to 900 yards.
I decided to drop the 215s after what I saw and what some of you guys experienced with the same bullet.
I went and got a box of 200gr SSTs and had promising results my first time out. I know the BC is only around .455 but the drop is way less than 250s at 800 and with a 15mph wind at 90 degrees the wind drift is about the same as a 250 with a BC of .550 (if the 250gr muzzle velocity is at around 2650).
The groups below were the first two groups I fired with the SSTs at 100m. These were two different seating depths with 73gr of S365 Somchem powder (IMR 4350 burn rate). Think I am close to it's sweet spot.
What is the minimum impact velocity required for expansion with these?
I will limit hunting distance with them to 800m. They are well priced around here and would enable me to shoot plenty of them compared to some other brands. I would appreciate any opinions on these.
Thanks
Pieter
I decided to drop the 215s after what I saw and what some of you guys experienced with the same bullet.
I went and got a box of 200gr SSTs and had promising results my first time out. I know the BC is only around .455 but the drop is way less than 250s at 800 and with a 15mph wind at 90 degrees the wind drift is about the same as a 250 with a BC of .550 (if the 250gr muzzle velocity is at around 2650).
The groups below were the first two groups I fired with the SSTs at 100m. These were two different seating depths with 73gr of S365 Somchem powder (IMR 4350 burn rate). Think I am close to it's sweet spot.
What is the minimum impact velocity required for expansion with these?
I will limit hunting distance with them to 800m. They are well priced around here and would enable me to shoot plenty of them compared to some other brands. I would appreciate any opinions on these.
Thanks
Pieter