Buford. Thanks for the compliment. I fully agree that a few extra fps aren’t worth the risk.
As my favorite powder (RL19) for the 7x57/145 Speer HC is presently not available, I’m now working with Accurate 4350. So far, I’ve only completed the chronographing. Again, the velocities maxed out at 1-1/2 grains short of the Speer manual specs, with an average of 2788 fps. with 49.5 grain. (Speer calls for
2792 with 51 gr.)
On my next range session I’ll be trying 48.5 gr. (2747 fps), 49 gr. (2765 fps) and 49.5 (2788 fps). If I can come up with something that will consistently give me 1.25” (or less) at 100 yds. I’ll be perfectly satisfied. After all, this rifle/bullet combo is intended for deer hunting at ranges of 300 yds. or less (usually much less) and experience has told me that a 145 gr. HC launched anywhere between 2700 and 2800 is deadly on any deer that’s ever munched an alfalfa sprout.😁
Last edited by Bobber257; 07/24/22.
