lefty315
Handloader
- Sep 29, 2004
- 942
- 460
So there I was....(always wanted to start a story like that) headed to the range this morning to meet my buddy with his chronograph. I've been working out two bullets for my Ruger No 1 RSI in 6.5x55. A 140 Ballistic Tip and a 140 Partition. Both bullets measure 3.080 to the lands in my rifle. The BT's have shown the best group at 3.010, the Partition 3.015.
43.5 grains of IMR 4350 for the BT, 44 grains for the Partition. Both loads were virtually identical in velocity at 2640 fps on a 35 degree day at 8:00 AM. I was happy with that, especially considering the RSI only has a 20 inch barrel.
The 3 shot group closer to the orange dot are the Partitions, the group left of that the BT's. 11/16ths for the Partition, 3/4ths for the BT. Which I think is terrific since I'm using a 1-4 Leupold with a German #1 reticle. The lighting this morning made the post as crisp as I have ever seen it, but it still takes some concentration to maintain the same aiming point.
43.5 grains of IMR 4350 for the BT, 44 grains for the Partition. Both loads were virtually identical in velocity at 2640 fps on a 35 degree day at 8:00 AM. I was happy with that, especially considering the RSI only has a 20 inch barrel.
The 3 shot group closer to the orange dot are the Partitions, the group left of that the BT's. 11/16ths for the Partition, 3/4ths for the BT. Which I think is terrific since I'm using a 1-4 Leupold with a German #1 reticle. The lighting this morning made the post as crisp as I have ever seen it, but it still takes some concentration to maintain the same aiming point.