358 Winchester Brass

[Mainehunter]

I scored on a few hundred, new 358 Win. brass, Winchester brand from a gun shop down east here in Maine. I decided to check on brass weight I was surprised the weight was close to 4 grains higher than Hornady or older Winchester brass that I have on hand. With that much increase I'm thinking of cutting back on some of my max loads, Right?

Mainehunter

[Blaine]

I'm not an expert, but wouldn't comparing the old to new capacity be more accurate?

[Mainehunter]

I'm not an expert, but wouldn't comparing the old to new capacity be more accurate?

I'm no expert either but I was more referring to high pressure. I just find it odd there is that much variation in brass weight between my old stock and the new Winchester brass.

Mainehunter

[Sixgun]

A 4 grain weight difference is nothing. I sometimes get that with brass from the same lot. Just checking the difference between 308 military brass and commercial r-p brass is 14 grains and yes, we are told to be careful with that much of a difference but even that is very little unless your working at the 52k range.

I've never used 358 brass in my 358's.....just ran a 308 case through a 35 Whelen expander plug.----6