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.300 RUM seems to give ejector marks very easily ?

 
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Old 12-18-2005, 04:53 AM
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.300 RUM seems to give ejector marks very easily ?

It seems to me the .300 RUM gives ejector marks quite easily on brass even with loads that are a under max.....................you can get ejector marks but no sticky bolt lift, have others found this ??
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Old 12-18-2005, 08:40 AM
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Re: .300 RUM seems to give ejector marks very easily ?

Same with my 338 Win in REM 700.

Rem brass worse than winchester.
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Old 12-18-2005, 09:07 AM
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Re: .300 RUM seems to give ejector marks very easily ?

that is how I keep track of how many times my brass has been shot.
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Old 12-18-2005, 03:08 PM
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Re: .300 RUM seems to give ejector marks very easily ?

So do not worry abut slight ejector marks wit ha load of 92 gr of Retumbo behind the 200 gr Accubond folks..............................I have no bolt stickiness whatsoever ??
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Old 12-18-2005, 11:07 PM
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Re: .300 RUM seems to give ejector marks very easily ?

Just yestarday I put about 35 rnds through 270x300RUM, doing some load developement. Most loads started with 95 to 97gr and worked up to between 103 and 109gr, every other shot left some kind of ejector mark on it. But when you start to see the mark getting real shiny. Beware, the brass is starting to flow and pressure is getting high. If I remember correctly cartridge brass starts to flow @73k psi. That is if my memmory serves me correctly. Just the same SAAMI standards are set @63 or 65K psi as max. For most newer cartridges.
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Old 12-18-2005, 11:42 PM
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Re: .300 RUM seems to give ejector marks very easily ?

TX thanks for that I will check those marks !! interesting to here that you have ejector marks on all you loads................seems to be an irritating round, if I got to loads with no ejector marks I am around max loads for the .300 winnie !!
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Old 12-19-2005, 04:01 PM
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Hey txhunter

Where abouts are you shooting, and what are the ranges?

I will be doing some developement soon myself and it's more fun when you got company. I am just a tad north in the H town area. Shoot em a e-mail if you want to hit the range sometime after the first of the year. From now till then I am pretty much tied up on the weekend. BTW you ever hit the surf down in that area? Might be able to work something out there as well.
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