I'm glad to hear some are happy, I have a new SPS in .223 and the best with handloads so far is around 1.5". It's very irratic.
Now before everyone jumps on me, hear is the list of what has been tried or modified, I have not pillar bedded it yet but I'm thinking it will help the most.
1. Jewell HVR trigger
2. Three scopes- B&L 4200 8x32 variable, Leupold 36x and Leupold 45X
3. Removed front stock pressure after 75rds.
4. Bullets - V-max, Berger MEF 52gr, Barts 52
5. Cases - Laupua
6. Loaded round runout - .0015
7. Primer - Fed 205 (two lots)
8. Powders - H4198, H4895, Old 8208 166167, VV135, 8208 122910
This is the most aggrivating rifle I have owned in the last 20 years. It's about to drive me nuts. I have about 400rds down it now and nothing improves it. As soon as the weather breaks, I'll try again.
Hovis