Typetwelve
Member
- Joined
- Mar 1, 2019
- Messages
- 644
Quick facts:
Loading for 44 special, all using CCI non magnum large primers.
-Ran some Missouri 240g lead over 6g Unique (my control)
-Ran some Hornady 200g XTP over 9g Unique, 13.5g 2400, and 18g 2400
-Ran some Hornady 180g XTP over 8.5g Unique, 14g 2400, and 16g 2400
All rounds were through my S&W 629 4".
I started with my 240g lead "control", chrono was a-ok, showing very predictable results in the high 700 fps range.
I started with the 200g XTP over 9g Unique, not sure what the deal was, the fps was coming in at high 300 fps range, not possible. I moved to 13.5g of 2400, it was reading mid 500 fps range, again, not possible with that load. When I moved to the 18g 2400 load, the wheels fell off, FPS on the first 2 shots was in the 8000 fps range. I immediately stopped, popped in a control round, and it was a-ok, showing fps in the high 700's. I ran 3 more of those 18g loads, 2 of which were again way over and one read 812 fps. With the recoil (and flame) of those 18g loads, there's no way they were moving in the 800 fps range. I know that's a hand-dyno assumption, but I know what a 1000 fps load feel like in that 629.
At this point, I ran another cylinder of my control and once again, A-ok.
I moved on to my 180g loads and all of them chrono'd just like I expected them to; 8.5 unq in the mid 900 fps, 14g 2400 in the mid 700 fps range, 16g 2400 in the mid 900 fps range.
I never moved the chrono during this session.
So, I have two questions:
-For the life of me, every 200g XTP load I made caused problems, I have no idea why.
-Every 2400 load I made thew unburnt powder everywhere.
Any help on this one?
Loading for 44 special, all using CCI non magnum large primers.
-Ran some Missouri 240g lead over 6g Unique (my control)
-Ran some Hornady 200g XTP over 9g Unique, 13.5g 2400, and 18g 2400
-Ran some Hornady 180g XTP over 8.5g Unique, 14g 2400, and 16g 2400
All rounds were through my S&W 629 4".
I started with my 240g lead "control", chrono was a-ok, showing very predictable results in the high 700 fps range.
I started with the 200g XTP over 9g Unique, not sure what the deal was, the fps was coming in at high 300 fps range, not possible. I moved to 13.5g of 2400, it was reading mid 500 fps range, again, not possible with that load. When I moved to the 18g 2400 load, the wheels fell off, FPS on the first 2 shots was in the 8000 fps range. I immediately stopped, popped in a control round, and it was a-ok, showing fps in the high 700's. I ran 3 more of those 18g loads, 2 of which were again way over and one read 812 fps. With the recoil (and flame) of those 18g loads, there's no way they were moving in the 800 fps range. I know that's a hand-dyno assumption, but I know what a 1000 fps load feel like in that 629.
At this point, I ran another cylinder of my control and once again, A-ok.
I moved on to my 180g loads and all of them chrono'd just like I expected them to; 8.5 unq in the mid 900 fps, 14g 2400 in the mid 700 fps range, 16g 2400 in the mid 900 fps range.
I never moved the chrono during this session.
So, I have two questions:
-For the life of me, every 200g XTP load I made caused problems, I have no idea why.
-Every 2400 load I made thew unburnt powder everywhere.
Any help on this one?