Purchased a Remington 700 SPS in 300 R.U.M a few months back. Started to do some load development and went to range today. Had previously purchased two box of Nosler brass only thing i could find also decided to purchase a box of ammo to get some comparisons and use brass after firing. Loaded ammo Nosler Trophy Grade 200 gr. Accubond. Loaded four rounds each of 200 Accubond in three different powders Retumbo, H1000 and RL33. First round fired was factory ammo extraction was fine look over casing. Longitudinal split in casing from approximately .400" above webbing. Bore and chamber cleaned prior to initial firing. Tried a second round factory every thing fine. Third round fine fourth round same split as first. Put away factory ammo. Chronographed on round 2967fps date from box states 2960 so close there. Did one three shot group with each powder and one round through chronograph to see what I could expect as a starting point. Retumbo best group H1000 fastest and RL 33 a bit of a disappointment. I need some help to as phots on this site. Not sure what to do. Any help would be appreciated. Lots of peeople using RUM on this site.
300 R.UM Initial Firing.
- Thread starter Alberta Wexit
- Start date
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Thanks. Just initial load of mid range 90grs. 2944. Will work from there. Am also going to try Hornady ELD X 200grs.
ShtrRdy
Well-Known Member
I would give the ammo manufacturer a call and explain what happened with their ammunition.
doyalan
Well-Known Member
How much H 1000 do you use? I use Retumbo.
I had used mid range loads as starter loads. 90 grains for both powders. Retumbo 2944fps and H1000 3092fps at 40F for temperature.
doyalan
Well-Known Member
I use 97 g H 1000.
X-2
Do you have a pic of the unfired factory ammo ?
Spoke with rep from Nosler this morning just waiting back on him finding info on computer on packaging and bar code. He said he would get in contact with me.
86alaskan
Well-Known Member
They should ask for the ammo back and send you new stuff. Had a batch of 460SW hornady ammo do the same thing, and it was due to improper heat treating causing hard cases. Those that you loaded are very conservative, I run 200's from my 300WM at a higher safe speed. That 300RUM should get you a fair bit more performance than you're seeing.
Hmmmm, Let me know what they say
