11-23-2023, 11:18 PM
nbk327 Wrote:Just contributing what information I have. I lost all my old chronograph data so if I didn't post it, I don't have it. None of the loads showed any signs of pressure, most are very mild, and all were shot through a Griffin Precision 6.5 Grendel AR-15 with a 23" 1-8 twist 3 groove stainless steel Lilja barrel
90gr Speer TNT 2.200" CCI 450 Hornady brass
H-322: 29.5gr
Benchmark: 30.5gr
95gr V-Max 2.245" CCI 450 Hornady brass
8208XBR: 31.0gr 2890fps ES 19 SD 7
108gr Scenar 2.260" CCI 450 Lapua brass
H-322: 27.7gr
Benchmark: 29.0gr
N-135: 27.3gr 2550fps ES 28 SD 11
123gr A-Max 2.245" CCI 450 Hornady brass
TAC: 28.0gr
130gr Berger AR Hybrid 2.260" CCI 450 Lapua brass
H-322: 24.6gr 2260fps ES 18 SD 7
Benchmark: 25.0gr 2256fps ES 9 SD 3
N-135: 26.5gr 2340fps ES 20 SD 7
Needed some figures for Benchmark. The only resource I could find for a 130gn projectile was the Berger manual and those figures were just crazy low. I could see recommendations for a 123gn projectile on the Hodgden site, and Berger's figures just made no sense. I appreciate this data!

