Hello everyone. I'm a newbee and have never posted in any kind of forum so if I'm in the wrong section or not doing something right please don't hesitate to yell at me and set me straight..Here's what I got going on. I've been hunting and reloading since i was 15 years old and now I'm 50 and still love it and try to keep a open mind and learn as much as I can each year. I live on the Eastern Shore of Va. and do a lot of White tail deer hunting. I have been shooting a Remington Sendero 7mm mag for exactly 10 years this year and highly recommend the Remington Sendero 7mm mag,.. Great gun!! Been loading 65 grains of IMR 4350 with a 140 grain nosler ballistic tip and having good luck with that recipe for a long time but i'm getting bored with the gun and ready to move on to something else. I was really interested in the Sendero STW and really had a hard time convincing my self that this ain't the gun for me because it is getting harder to find these guns in a Sendero each year as well as the brass, plus to me it doesn't seem to be a big difference than what I'm shooting now. So then the 7 RUM was next in line for me but then figured out that the barrel trouble is something I don't want no parts of as much as a Sendero setup cost so that leads me to the Remington 300 Ultra Mag. And thats what I got coming with a Leupold 4-12x50mm firedot ballistic scope...Sooo....good move, bad move or what???...I use the Nosler reloading info and would like to stay wit the IMR 4350 powder and the nosler ballistic tip bullets. The recipe i was thinking of starting with is 90 grain of 4350 with a 125 grain nosler ballistic tip..Is this a good load to start with? I'm looking to shoot as far and accurate as I can.. And is there any kind of break in routine i should go through before I start shooting and trying different loads? Thanks for your time and any help gun)