by Bustacap » 08 Apr 2019, 6:09 pm
I have attached one more for your interest. This was the 165gr SGK HPBT at 42.5gr of BM8208. Still a good honest group. I discovered one more thing with this rifle. I was over cleaning it. I removed every trace of dirt and copper fouling after my shoots. It will not group this clean. I looked back through all of my previous work and found it would not group until it had fired at least 15 rounds through it. It seems to like being hot also. I was once rushed to finish some load testing before the range closed. The barrel was near sizzling to the touch but still could put 3 shots in the same hole. So take some fun ammo to dirty, and warm it up before you try your loads. I had no luck in seating the projectiles out towards the rifling. I actually found bigger improvements seating them deeper. I had some 130gr Speer hollow points, flat base things left over from my Omark. The Lithgow did not like them one bit, sounded like a howitzer going off. I pushed them back to COAL of 2.61 inch from memory and Shazzam, through the same hole. They actually out grouped all of the other projectiles that I tested that day. A fast and devastating projectile on anything, even large pigs. Add them to your list if you are looking for a varmint style round.
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- You should find a good load somewhere between 42.5 and 43gr.
- 165gr SGK HPBT 42.5gr BM8208.jpg (122.56 KiB) Viewed 5025 times