Rem 300 Ultra Mag using Sierra 200gr HPBT

Thats funny, the ones I have built get 3,220 fps. at around 65,000 psi.... read less.....shoot more! [img]images/icons/grin.gif[/img]


It sucks for whom ever gets hit with one. [img]images/icons/wink.gif[/img]

[texasdave]

My experience with my 300 ultra and Retumbo has not been great. I find that the rifle throws a fireball which means I am not burning all the powder. I have had better luck with R22 and am now working with R25. Just my two cents worth.

[Iron Worker]

Hey S1 How dare you post a great velocity but don't give the load.Whats up with that?I need to put some loads together this weekend for my black bear hunt oct 1st.I just recieved my 200gr accubonds and a pound of Retumbo.I was thinkin of useing H1000,cuase it worked so well with 180 Noslergold partions.But reports of 3,200 with Retumbo,I can't resist. [img]images/icons/cool.gif[/img]

Iron worker, good point. I tend to put bullets pretty far into the lands, and typically use long Lilja 3 groove barrels, all of which may vary quite a bit from your set up. If you have loaded H-1000 in your rifle, just note that Retumbo will be about 2 grains slower than H-1000 with the same bullet, all other conditions staying the same. Start in a safe place, and work up.

I have to agree with Texas Dave in part.... I have not had great results with bullets lighter than 180 and Retumbo, but Retumbo shines with bullets 200 grains and heavier.

The Nesikas tend to shoot comfortably with a little higher pressure than say my win mod 70, so you have to be careful about trading exact loads. Listen to your rifle's pressure signs and load accordingly.

[img]images/icons/wink.gif[/img]