Re: 300 rum loads
Ok here is my results from Saturday, am going to try one more idea before I move out beyond 100 yards, but here are my results. Good luck
Ok here is what I have come up with, bare in mind that I am still in load development and am still only shooting at 100 yards. The powders I have tried are as follows, Retumbo, H1000, Ramshot magnum, RE22, RE25. The bullets I have shot are berger 175gr, 185gr, 190gr and 210gr, also tried hornady 208gr A-Max. The 208 A-Maxes shoot great, but as I still have 3 brand new boxes of berger 210's, those are what I am going to shoot and my gun seems to really like them. I load them .020 off the lands, I installed a wyatt extended box magazine. The load data came from Walt at berger and have tweaked his data to suit my gun. The chrono I am using is the CED.
210gr berger with 93gr of Retumbo,speeds were 2955fps-3023fps, quarter size groups. 5 shots groups.
210gr berger with 94gr of Retumbo, speeds were 3048fps-3067fps. 5 shot groups.
210gr berger with 92gr H1000, speeds were 3011fps-3031fps. 5 shot groups.
210gr berger with 94gr H1000, speeds were 3093fps-3128fps. 5 shot groups.
210gr berger with 95gr H1000, speeds were 3126fps-3146fps. 5 shot groups.
210gr berger with 89gr RE22, speeds were 3095fps-3124fps. 5 shot groups.
210gr berger with 89gr RE25, speeds were 2977fps-3008fps. 5 shot groups.
210gr berger with 91gr RE25, speeds were 3048fps-3064fps. 5 shot groups.
I felt the Ramshot magnum powder showed too high of pressure at the max load, but was not happy with the speeds. The gun I used is a Remington Sendero 300RUM, 26 inch barrel, 6-24x50 with 30mm tube Sightron S111 scope. I still want to get an after market trigger as I hate the stock X-Mark trigger. I am using federal 215 primers, remington cases, my measurments are from the base of the case to the Ogive-3.125"
Good luck and hope my data helps you come up with a load that works for you.