WARNING
MY LOAD DATA - MY GUN - MY WORKING UP - USE AT YOUR OWN RISK
Sooooo here we have it…
cartridges of the world, 16ed
Own research seems to confirm:
Milsurps ammo through a chrono, 100’ish gr milsurp round should be travelling at around 1000fps +/-50fps.
Using powder coated bullet, cast with: Lee 311-100-2R, that sat at around 102gr.
Powder: ADI AP70N
Charge (gr):
| 4.3 | 4.5 | |||||
|---|---|---|---|---|---|---|
| 1055 | avg | 1111.857143 | 1153 | avg | 1146.133333 | |
| 1105 | median | 1116.5 | 1159 | median | 1153 | |
| 1124 | max | 1138 | 1180 | max | 1180 | |
| 1131 | min | 1060 | 1177 | min | 1101 | |
| 1087 | ext. spread | 78 | 1171 | ext. spread | 79 | |
| 1060 | 1101 | |||||
| 1117 | 1124 | |||||
| 1116 | 1130 | |||||
| 1108 | 1135 | |||||
| 1098 | 1155 | |||||
| 1138 | 1155 | |||||
| 1129 | 1155 | |||||
| 1127 | 1113 | |||||
| 1135 | 1148 | |||||
| 1091 | 1136 |
Both 4.3 and 4.5 grain charges have some authority to it. It went from 22-esque pissy little party popper to something fun. Felt recoil - yes! Both 4.3 and 4.5 grain charges feel similar. Controllable, but digs into hand quite a bit, tiny checkering on a tiny grip doesn’t help. 4.3 is mildly less snappy. I am not sure ‘snappy’ is the right word though, the gun is actually very well balanced and doesn’t jump… Rather rides back into my hand. I suppose this ideal ergonomics for shooting, just not for my skin lol
4.5 grain charge - no signs of pressure on the primer. Cases came out of the cylinders with minimal resistance, but did feel sticky so to speak. I used my hands, push from opposite side of the cylinder and then just pull the case out with my fingers, so not very sticky at all, but needed assistance. Anything over and this is where I think it would start getting messy. This is well over spec, so I guess it’s good to know, but won’t be doing this again. Just didn’t feel right in general.
4.3 grain charge - no signs of pressure on the primer and all but two case freely fell out of the cylinder chambers, either on their own or pushed (again, fingers) from the rear of the cylinder. The other 2 just needed an additional tap (still using fingers, not extraction rod)… No extraction rod or force used what so ever.
Was shooting through the chronograph at ‘A’ area on IPSC target, so not as tight as it could be, but held a respectable group for what it is.
Overshot it just a tad, so I think within bottom range of 4.2 grains is where it’s at 
W00t! Time to bulk load and adjust sights.
Very happy.