I've been a fan of Interlocks ever since I got my first centerfire rifle a, 260 Rem. I started reloading and chose the Interlock SP (pointed) because they were cheap. They shot so well, and perform on deer so well that I kept on using them. I also use them in my new 243. The only reason I don't use them in my 25-06 is the guy that I bought it from had a tackdriver load using the Nosler Ballistic Silver Tip, so that's what I use in that. I've never tried the roundnose, though. My 243 load is a rather mild load using H4831SC. THe 243 would not be used when long shots are likely, so the mild load will do me just fine.
Dave
AKA rifleman