I had the opportunity to try Hornady Interlock 300 gr in Africa several years ago. I shot 11 elands, 9 impalas, 2 kudus, 2 warthogs, 1 oryx and 1 leopard with them.
Because they are not bonded bullets, I decided to make a sedate recipe closer to the 9.3x62 than to a full horse power .375 H&H magnum.
In the past, I was able to push them at 820 m/s ( 2690 f/s) with a famouse double base powder from Switzerland but it's far to fast for such cup and core bullet. The accuracy was good in my Blaser R93, but the recoil started to be quite strong.
For hunting, I decided to use the Vihtavuori N140 and I had a good accuracy at ~ 710 m/s (2330 f/s).
Well the bullet works but I will never use them again on big stuffs. For sure, I killed several big elands bulls with it, but I also had several bullets that broke apart. I would say, 10 elands didn't go far so in that case, we cannot really speaks about faillure but in one case, I have a serious doubt. I shot a yound, but already big body bull at maybe 20 meters maximum in the thick bush. The animal was full broadside and I touched it just behind the shoulder. Hit hard, the animal ran away and we expected to recovered it within 100 meters. At the beginning there was a lot of blood but quickly, there was almost no blood anymore. We followed the animal till the darkness and we picked up the trail the next morning a bit further. Thanks to the incredible skill of the tracker, we finally recovered the animal dead after a 5 kilometers tracking. My shot was perfectly placed but despite our requests, workers were not able to recover the bullet and to tell us what happended inside. We are pretty sure the bullet burst at the impact and fail to penetrate deeply into the boiller room.
On impalas, they tends
Here are all the bullets recovered.
1 : Kudu bull shot full broadside between 170-180 meters. The bullet went through both shoulders and was recovered under the skin. Weight retention 225 gr = 75 %
2 : Eland cow shot with a quartering-away shot at 70 meters : 210.19 gr = 70 %
3: Impala shot with a quartering-away shot at 60 meters : 200.78 gr = 66.9 %
4 : Eland bull shot full broadside at 100 meters. The bullet went through both shoulders and again recovered under the skin : 221.6 gr = 73.86 %
5 : Eland bull shot at 20 meters, full broadside. The bullet that broke the first shoulder completely exploded but was recovered in the opposite shoulder.
Here is a video to see it well in details :
74.38 gr = 24.8 %
6 & 7 : Eland bull shot twice at ~100 meters with both quartering-toward shots. The n° 6 : 246 gr = 82.1 % and the n°7 : 84.26 gr = 28.1 %
8: Eland bull shot at 100 meters, full broadside and through shoulders : 72.07 gr for the lead and 71 gr for the jacket.
9 : Kudu bull shot at 94 meters with a quartering-toward shot. 144 gr = 48.1 %
Now in this caliber, I'm using Degol 350 gr, Starkmantel and Lion Load, and they perform better on games.