300blk expansion test....UPDATED WITH MORE!

[Wvfarrier]

I decided to play around with some 300 blackout loads.

200 grain Makers Expanding Subs
10 grains of H110
2.20" OAL
Winchester Small Rifle Primers
Averaging 1057fps (10ft from muzzle)

Trued Remington 700 Tac
16" 300blk

100 yards since that is as far as I would use them.

Testing medium was a 1# bologna pack covered by a 10oz leather wrap. Backed it with a piece of 1/2" particle board and then several milk jugs.

Round penetrated to the 4th jug, damage to the first 2 jugs was quite substantial. The last 2 just had broadhead shaped penetration holes.

I got expansion from 9 grains and up but the accuracy was best between 9.6 and 10.2 grains. 100% weight retention. Accuracy was about 2 moa.

 

[Mobuck]

Similar to what we see from GORILLA sub-sonic HP. 18-24" of penetration on real life deer hits.

 

[Mobuck]

Where did you get those bullets?

 

[Hvymax]

Where did you get those bullets?

Pretty sure I've seen them at Midway and Natchez. Lehigh makes something similar.

 

[Wvfarrier]

Ok, so these two were fried at 65 yards
#1- Winchester 1892, 24" barrel in 357 mag.
Handloaded 140 grain XTP at 2405 fps (avg)
This round was hard to capture, it shredded through a 1/4" piece of leather covering a 1# bologna pack and then 6-gallon water jugs!!! It was laying on the ground behind the 6th jug. The first 2 jugs literally exploded into multiple pieces. It expanded to 60 caliber with 90% weight retention.

#2- Henry Big Boy 45 Colt
Handloaded 300 grain XTP. I did not get a velocity on these but they are incredibly accurate and POWERFUL.
This on, using the same medium went to the 5th water jug with a hole in the back of the jug. I would use this load for anything in North America. The first to jugs essentially disintegrated. It expanded to 70 caliber with 95% weight retention.

I plan to use both these for deer/bear this year.

 

[Ethang]

That load looks like it will work great...some impressive expansion. How much POI change was there over your normal loads?

I have some Maker's bullets to load subs in 350 Legend but have not gotten that far. Every report on Makers bullets I have seen they have performed fantastic. Should get off my butt and load them up...

 

[Wvfarrier]

That load looks like it will work great...some impressive expansion. How much POI change was there over your normal loads?

I have some Maker's bullets to load subs in 350 Legend but have not gotten that far. Every report on Makers bullets I have seen they have performed fantastic. Should get off my butt and load them up...

About 6" low difference with the 200 grain Makers over my normal 125 grain Speer TNTs