Did the bullet exit? If not, did you recover it---- or parts of it?

I ask because I used some Sierras many years ago in various diameters and weights from various cartridges. As a rule I have found them to be very accurate, but lacking in as much penetration as I like. Most times they expand violently and very often they come apart and break up. Not all. Some do very well. But many do tend to break apart. That action of breaking up can and most times does kill like lightning, if the bullet goes in a straight line and doesn't allow the wound channel to veer off badly.

I had a 7MM Remington mag and a 7MM Weatherby mag and found both to be excellent tools for filling my freezers, but the speed of the bullets made them more critical of bullet construction then other 7MMs that were slower, such as the 7X57 and 7-08.

With both my 7MM Mags I sometimes didn't get exits on deer, but with my 7X57 I never failed to get an exit. Once I gave up on all 7MM bullets except for those that held together well ( Mostly Partitions and Barnes X) in my 7MM Magnums all my shots gave me exits, --even on elk.

I loaned my 7MM Weatherby to a lady when she and her husband came to Wyoming to shoot buffalo. The 7MMs were not all that impressive in how well they killed the buffalo (Bison) but I give them credit on how well they penetrated and held together. She never hit big bone with her shots. But 3 shots all went clear through to the hide on the other side of the bull. Even the husbands 338 Mag didn't exit, but after all the shooting they had their bull. The 7MM with 160 grain Barnes bullets went just as deep as the 338 with the 250 grain partitions. Not as large a wound in diameter, but not too far behind.
All 5 bullets stayed in the bison and I recovered all of them when I was skinning it and cutting it apart for the trip out. Three 7s and two 338s. 4 of the 5 were on the hide on the other side and one 338 stick in the ribs. Two 7mms hit the right rear side of the chest and stopping on the left, One 7mm and one 338 hitting the left side and ending up on the right, and one 338 hitting the left side about center body and traveling forward forward through the liver and into the chest going to to the ribs on the right side near the front.

I believe 7MM Mags to be good for any american game with correct bullets. For bison I would prefer something larger, but they will do OK if you shoot precisely. I know of several men who have killed moose with them and done just fine. But when I see deer shot with 7 mags and there is no exit, I have to come back to the issue of bullets being matched to game and to cartridges. So that was my reason for asking about an exit. Just being nosey because I am very interested in gathering info from other hunters concerning their bullets and performance.