.300 Remington 700

[Wild Country]

Looking to make a round for my .300 Remington Ultra Short Mag that can work on bear out to 600 yards. I was hoping to work up a round with the powders I have on hand which are which are Hodgdon Retumbo, Hodgon H380 and IMR 4350. I know the Retumbo will produce the best but was wanting some help with the best place to start selecting type of bullet; bullet weight and powder. I am willing to buy another powder if need be but was just wanting the gurus of reloading to give me their best advice on where to start. New to reloading this year and just finished setting up the spare bedroom with my x mass gifts. Thanks for everyone's help!

 

[Colorado Cowboy]

I like 180 gr Nosler Partition in my .300 Wby. I use Reloader 25 powder.

 

[6mm Remington]

I think a 165 gr. or 180 gr. Partition or Accubond would suite your needs very nicely! IMR4350 that you have on hand is the one I would pick out of those three to try first also.

 

[Tim McCoy]

I saw how a 300 Win Mag with 180 accubonds performed on two elk last fall. Impressive, if you want something that opens and does a bunch of damage, then holds together to penetrate. Mimics a partition to a large degree, either would be ideal if they shoot well, as would many other pills.

 

[Colorado Cowboy]

I saw how a 300 Win Mag with 180 accubonds performed on two elk last fall. Impressive, if you want something that opens and does a bunch of damage, then holds together to penetrate. Mimics a partition to a large degree, either would be ideal if they shoot well, as would many other pills.

This correct. The reason I use Partitions is that I have about 500 of them and have a load that works for me real well.

 

[libidilatimmy]

I think a 165 gr. or 180 gr. Partition or Accubond would suite your needs very nicely! IMR4350 that you have on hand is the one I would pick out of those three to try first also.

The IMR4350, or something in that similar burn rate range, is also what I'd try first. It's listed as the most accurate powder for that cartridge for 180gr bullets in the Nosler manual.