Zero333
12-24-2016, 02:37 PM
Curious on what that is based on? Winchester does not seem to be anything special these days (interested not being smart)
RP would be one of my choices, Lapua for really going to the limits.
I use Winchester and Lapua brass in 243win 7mm08 and 308win. And the Winchester brass takes max loads with stride while the Lapua brass starts to loosed the primer pockets after a few firings and shows signs of pressure earlier.
For example. Worked up a load with 308 Lapua brass and 155gr Scenars.
First and second firing I got 2,990 fps with 47.2gr Varget and 1/2moa, and 48.2 gr had the slightest sign of heavier bolt lift during load work up on first firing with virgin brass.
After the 2nd firing the primer pockets loosened a bunch but still good to hold a primer well.
Annealed after 3rd firing.
At 4th firing the 47.2gr load had the odd harder bolt lift, so I reduced load down to the next node at 45.2gr. @ 2,885 fps
Annealed after 6th firing.
At 8th firing I had to scrap a few pieces of brass due to loose primer pockets, even tho I reduced the load by 2gr at 5th firing.
On the other hand, I have 300 pcs of Winchester 308win brass that's on it's 26'th firing and have not scrapped a single piece (anneal every 5 reloads). And during all load workup I never come across any signs of pressure, and I always work up a bit over max what's listed in Manuals. One of the most accurate loads was with 190 SMK @ 2,720 fps, 24" bbl.
RP would be one of my choices, Lapua for really going to the limits.
I use Winchester and Lapua brass in 243win 7mm08 and 308win. And the Winchester brass takes max loads with stride while the Lapua brass starts to loosed the primer pockets after a few firings and shows signs of pressure earlier.
For example. Worked up a load with 308 Lapua brass and 155gr Scenars.
First and second firing I got 2,990 fps with 47.2gr Varget and 1/2moa, and 48.2 gr had the slightest sign of heavier bolt lift during load work up on first firing with virgin brass.
After the 2nd firing the primer pockets loosened a bunch but still good to hold a primer well.
Annealed after 3rd firing.
At 4th firing the 47.2gr load had the odd harder bolt lift, so I reduced load down to the next node at 45.2gr. @ 2,885 fps
Annealed after 6th firing.
At 8th firing I had to scrap a few pieces of brass due to loose primer pockets, even tho I reduced the load by 2gr at 5th firing.
On the other hand, I have 300 pcs of Winchester 308win brass that's on it's 26'th firing and have not scrapped a single piece (anneal every 5 reloads). And during all load workup I never come across any signs of pressure, and I always work up a bit over max what's listed in Manuals. One of the most accurate loads was with 190 SMK @ 2,720 fps, 24" bbl.