Anyone have a lead on a 180gr Lead/Poly Coated Bullet using 800x?
My load book doesn't have anything in it. I'm going to use a chrono on this to where they end up velocity wise. Going to chase some higher velocities if possible.
I think I'm going to need to resort to hand weighing each charge with 10mm. The RCBS flow master does an OK job but is usually +/- .1 and if I'm going to chase stuff at the higher end I want it to be more consistent. It will all be loaded on a Dillon 550b.
I'm going to use these bullets. https://www.kingshooters.com/4010-rnfp-p-49623.html (https://www.kingshooters.com/4010-rnfp-p-49623.html)
All will be shot out of a Glock 20.
Thoughts, suggestions, etc?
Well the Glock is a unique bore and bullet fit is everything in the hexagonal rifling. The bore on the Glock factory barrel is said to be 0.402"... With that said, I use my own cast bullets, sized at 0.4015" and they have worked well from my factory barrels. Others have used 0.4020" for their results.
These poly coated bullets have proved to prevent leading and can be accurate if the bore fit is good.
If you want around 1200 fps you could start around 8.4 grains of 800X. Just be sure to test that they are not keyholing on your targets. If the keyhole the bullet fit may not be working out!
Use the IMR website:
http://www.hodgdonreloading.com/data/pistol
The load data I have seen from Lyman's Cast 4th edition to Lee have suggested anywhere between 7.6 grains and 8.6 grains (max) for that weight. You will probably not find an exact load with your bullet and powder coated, so you will need to develop your own from similar loads (start low, work up).
Whatever you determine your start load to be, it should be around 7.6 grains and your max should be in the 8.6 grain frange. If not, double check your recipe.
Do NOT use Hornady data for anything but Hornady projectiles. Even then, I found their starting load for 800x 180 grain HP to be almost too hot (9.2 grains).
From my notes, around 8.6 grains should get you in the 1200fps ballpark, but be wary of switching lot numbers. I have found large lot-to-lot variations with 800x, so I do a partial work-up with every new lot.
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