300 RUM,Retumbo,200g Accubond

[remingtonman_25_06]

I am loading for a friends new Remington 300 RUM. HS precision stock, trigger down to 2.5#, Leupold vx2 6-18, Target, Matte. Leupold base and rings. I have used H-1000 for all my loads in my own .300 RUM but thought of trying Retumbo. Now I have the oppurtunity so what works? I know theres a couple people out there that have some pet loads with Retumbo and the 200g Accubond. I am going to finish breaking in his barrel, then start loading up some test rounds. Looking for 1/2"- 3/4" 3100-3200fps.

I believe I am running 94.5 gr of Retumbo behind the 200 AB for 3197 fps. Work up to this load because it is on the edge of being warm in my rifle.

[Jon A]

I use 95 grains for 3177 fps. Work up, it isn't that hot in my rifle but it might be in yours. [img]images/icons/wink.gif[/img]

[meichele]

I tried 95.0 grains of RETUMBOin my 300 RUM with the 178 AMAX and that made for a VERY tight extraction. Velocity was 3400 FPS.

Hot lot perhaps??

I guess depending on the rifle's tolerances I would start a bit lower just to start.

[Jon A]

Could be. My rifle doesn't have the tightest chamber in the world either.

However, Hogdon lists 100.5 as the max for 180's so it's really surprising you're getting such pressure signs.

[Chilly Willy]

I've packed 85 grains of retumbo and the 200 AB for 3006 fps and well under MOA. Is 94 grains considered over max load? Will be doing some loading this weekend and would like to get the volocity up, but not loose the accuracy. What barrel lengths are you fellas running?

[Derek M.]

Safe start is 86.0 work up to 96.0 for Retumbo 200 grain Accubond.

I have a 28" Shilen barrel. 93.5grains shoots 3/4" groups. Just bought newer chrono. Will test fps next week at range.

WLRM primer. However, Re 25 outperformed the Retumbo so far with respect to group sizes. Several powder charges with Re25 grouped very well, < 1/2".