Hunting Washington Forum

Equipment & Gear => Guns and Ammo => Topic started by: Mulie87 on March 15, 2019, 07:48:28 PM

Title: .300RUM Remington brass issue
Post by: Mulie87 on March 15, 2019, 07:48:28 PM: Just had a .300RUM built. Loaded Remington brass and one out of four or so will not extract. Guy at the range told me that Remington’s .300RUM heads are not to specs and a few thousands smaller than SAMMI. Anyone ever hear of this or had the same issue? I just ordered Nosler brass (since that’s the most popular (besides Remington brass only due to price) so we’ll see how that works.
Title: Re: .300RUM Remington brass issue
Post by: baker5150 on March 15, 2019, 07:54:58 PM: Buddy had the same issue with his RUM and Winchester brass
Switched her to Norma brass and no issues.
Title: Re: .300RUM Remington brass issue
Post by: rudysts on March 17, 2019, 08:02:33 PM: Was your Rum built on a custom action or a Remington action ? if on a Rem action sometimes they have an extraction issue due to poor timing on the bolt handle. I had that issue once with a 7 Rem mag.
Title: Re: .300RUM Remington brass issue
Post by: Mulie87 on March 17, 2019, 09:37:10 PM: Remington action.
Title: Re: .300RUM Remington brass issue
Post by: rudysts on March 18, 2019, 06:36:14 AM: This video might help
in my case I had Benchmark barrels build me a 7 Rem with an action they supplied their fix was to install a Sako extractor.
Title: Re: .300RUM Remington brass issue
Post by: jasnt on March 18, 2019, 07:04:16 AM: Adg is making rum brass now
Title: Re: .300RUM Remington brass issue
Post by: TheArmoredShop on March 23, 2019, 02:38:26 PM: Quote from: Mulie87 on March 15, 2019, 07:48:28 PM
Just had a .300RUM built. Loaded Remington brass and one out of four or so will not extract. Guy at the range told me that Remington’s .300RUM heads are not to specs and a few thousands smaller than SAMMI. Anyone ever hear of this or had the same issue? I just ordered Nosler brass (since that’s the most popular (besides Remington brass only due to price) so we’ll see how that works.

Are you using a case gauge for your brass? Full length sizing die?

I’ve seen this happen before, especially in semi’s. If your case gauge is off, they won’t eject properly.

I learned about them not long ago and sure glad I did otherwise the 15k 223 I just reloaded would’ve been garbage. Good 20$ investment

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Title: Re: .300RUM Remington brass issue
Post by: yorketransport on March 23, 2019, 08:26:25 PM: It's more likely that your extractor is tweaked a little bit than the case rims are that far out of spec.

Remington extractors aren't that difficult to replace, even if it's the older riveted style. The parts are about $25 although the proper jig to peen the rivet is a little pricey.
Title: Re: .300RUM Remington brass issue
Post by: Mulie87 on March 23, 2019, 10:16:53 PM: No case gauge, but I do full length resize. Just got new Nosler brass and they seem to exract/eject just fine. Albeit they were empty. I’m heading to the range for load development tomorrow am and will report back with extraction/ejection performance using Nosler brass.
Title: Re: .300RUM Remington brass issue
Post by: Mulie87 on March 24, 2019, 01:30:59 PM: Shot the Nosler brass today. Didn’t have any extraction/ejection issues at all. Nosler brass for me👍