Originally Posted by Footsore
Hi Jeff. What is the spike that you are referring to. I have just bought some 230 gr Hybrid target bullets for my 300 RUM and am planning on using Retumbo.
Hi Steve, I have used Retumbo in the past a lot. Especially is larger Magnums like the 30-378. I could get good accuracy and velocity , but if I ws running it anywhere close to a max load there would always be the time where I would get a hard bolt lift and that one would go high. It seems to me that Retumbo has a very fine line as to where max is, if you dont stay well below it you will get this spike. Like, you will shoot 3 and all is fine then the next one goes hot. It drove me crazy. I was very careful to make sure I was not over pressure but I just got tired of it and switched to H-1000. I have never felt I gave up anything going to H-1000 and it has become my go to powder. I will add that I have seen this complaint many times from other shooters too. So, if you use it be aware of this, especially if you plan to run close to a max load.