Rem 300 Ultra Mag using Sierra 200gr HPBT

[tvincent]

Has anyone loaded a 300 RUM for this bullet? Sierra 200gr HPBT #2230 they recommend 83gr of H4831, velocity is 3000 fps BC is .565

Thomas

[longhunter43071]

I'm using a 200 grain Accubond with Federal 215 primer and 89.5 grains of Retumbo and my rifle loves it...............

I can't help you with the 200 SMK but my 300 RUM with a 1-13" twist likes the 190 with 82grs of H4831SC which isn't a max load. The barrel is a Kreiger, 28" long and has a tight bore. It averages 3100fps and shoots 1/2moa 3 shot groups to 1K.
I'd give the 200's a try with the Sierra load, should shoot well.
Wayne

[NotEnoughTriggerTime]

I'm working on a load for the 300, with the 200 gr SMK. My most consistant load so far is Fed 215 primer, 90.3 gr H1000. Don't have a Chrono, so I don't have any velocity figures on the load. (26" barrel)

I'm going to start experimenting with different primers an seating depth next, to see if I can get it any better.

[ 08-30-2004: Message edited by: NotEnoughTriggerTime ]

Thomas,

You will likely find that Retumbo will give you much better results than H-1000. We find it to be about 150 fps faster than H-1000 at the same pressure and the accuracy is better. Start about 89 grains and work your way up. You will probably find max pressure between 91 and 94 grains of Retumbo with the 200 gr. Sierra [img]images/icons/wink.gif[/img]

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[ 08-29-2004: Message edited by: S1 ]

[Iron Worker]

My Sierra manual list 95.7 grains of Retumbo For A FPS of 3,100.Thats only 100 FPS over a 300 Win Mag.That sucks!!! [img]images/icons/confused.gif[/img]