Amazing but true

[Questor]

I've read that 375H&H prints different weight bullets to the same point of impact. By golly, that's true in my gun. The 235s hit in the same group as the 300s at 100 yards. Now ain't that cool?  It makes me want to rush right out and get some 270 grainers to see if they group like that too.  I'm using different powders for the 235s and 300s.

Have you done any testing in this regard?

[Lone Star]

From time to time this has been reported for various cartridges, including the .375 and the .270.  IMO it has to be related more to the rifle and it's barrel/stock fit as well as how it is supported than the case itself.

Normally a heavier bullet will print higher on the target at 50 or 100 yards, due to higher recoil and longer barrel time.  At longer ranges this eventually reverses.  In the case of two different bullets like your .375, they may print together at 100 yards, but they will not at 300.  Still, this can be handy for the hunter who wants to carry two different bulelt weights for the same rifle.  However, I can only think of a couple of reasons why he would, and they involve hunting in Africa and Alaska where dangerous game can be encountered while hunting more docile species.

[Questor]

I see it as more of a curiosity than anything else. In actual practice, I would never use two different bullet weights on a hunt.  I even am leery of using two different bullets of the same weight unless I've proven them in my gun first.  

I can personally provide a counterexample of a .270 that doesn't print different bullet weights to the same group.

[Ramrod]

A gun that puts heavy bullets into the same group as lighter ones would be very usefull in dangerous game country. My .357 H&H puts 300 grain bullet dead on at 50 yards, when the 270 grainers are sighted 2" high at 100. This is very usefull to know. Guess what bullet you might need most at close range. My .30-06 puts 220 grain bullets about a foot lower than 150 grain bullets at 100 yards. I have no doubt that the .30-06 will kill anything in North America with those 220 grain bullets, but if you are sighted for the deer loads, and have to change ammo, you are in for some fancy memory work. I can't trust my rusty memory, I would rather trust my rifle.

[Lead pot]

Questor.
My .50 Sharps with a 718 grain bullet has the same sight setting as the 685 grain at 1000 yards.

Kurt