Keep loading?
Yesterday I finished my testing with some reloads I wasn't supposed to do. I posted before about AA4064 and some people including Accurate said it wasn't tested but pressures should be there etc etc. AA4064 was the only thing on the shelf and with so many saying it's like IMR4064 which does have manual loading data, I'm stubborn and just wanted to do it!
I tested before with Hornady 75gr BTHP with 22.5gr, 23.5gr, 24.0gr and 24.5gr but the sun was messing up my Pro Chrono for more then half the shots. Hell all the 22.5gr loads said 1400-1500ftps haha. So I went out again with just 24.0gr as I determened that was best based on cases fired, some velocities, and frankly I just couldnt do 24.5gr because they were so compressed in the brass the hollow point was deforming from the die making the OAL over 2.26" as it squeezed the tip longer an pinched the sides.
With the 24.0gr I can only load LC brass with the 75gr's. All others and .223 brass has the powder filling the case all the way up into the neck. Even with LC brass the loads still compressed but hey, some like that.
I shot 10 rounds before moving to sighting in, I was at 15 feet with a Pro Chrono Pal, at 52 degrees outside with my HM Defence triple hone 1:8 16" barrel, again shooting AA4064 with LC brass and Hornady 75gr BTHP. Pretty close!
1. 2469
2. 2455
3. 2455
4. 2469
5. 2460
6. 2460
7. 2450
8. 2473
9. 2492
10. 2487
I was hoping for 2500ftps but I guess close enough d/t powder and bullet weight. The gun was sighted in for some older loads of I think Hornady 68gr BTHP and H322 which is a crazy fast powder.
First 2 shots not bad for no sighting in!
The wife also had some nice shots with a nice group!
Only thing I'm worried about is we shot about 90 rounds. The more we shot the more off we got. Anyone have a clue why that is? It did heat up closer to 60*, the wind was blowing at times, and I do have a $100 UTG scope. By the last 5 rounds I was down about 2" and had to click up on the scope. Something tells me the scopes not perfect for a ton of shots. Should I keep loading and not worry? Long as she can head shot with this rifle we built, she and I will be happy.