300 WM brass

326 Views 5 Replies 4 Participants Last post by cliffspot, 18 d ago

wag5150

Discussion Starter · 21 d ago

I’ve been using Norma brass for my 300WM. Let’s say I’m using 77.2 of H1000 in Norma brass, how much different will Lapua brass be? Just bought Lapua for the first time.

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billt

· #2 · 21 d ago

wag5150 said:
I’ve been using Norma brass for my 300WM. Let’s say I’m using 77.2 of H1000 in Norma brass, how much different will Lapua brass be? Just bought Lapua for the first time.

Hi, and welcome to the forum! To be honest I don't think you will find much, if any difference between Lapua and Norma brass in the .300 Win. Mag. Both are a quality manufacturer. While there is a chance you might find a bit more case to case variation in the Norma, it's going to be so slight, especially in the large .300 Win. Mag. case, that it's not going to be enough to cause any discrepancies.

I would weigh several of each, and see what you come up with in case to case variation. My guess is that you're not going to find much, if any difference. Both cases are going to be very close in case to case weight. Especially when compared to each other.

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wag5150

Discussion Starter · #3 · 20 d ago

billt said:
Hi, and welcome to the forum! To be honest I don't think you will find much, if any difference between Lapua and Norma brass in the .300 Win. Mag. Both are a quality manufacturer. While there is a chance you might find a bit more case to case variation in the Norma, it's going to be so slight, especially in the large .300 Win. Mag. case, that it's not going to be enough to cause any discrepancies.

I would weigh several of each, and see what you come up with in case to case variation. My guess is that you're not going to find much, if any difference. Both cases are going to be very close in case to case weight. Especially when compared to each other.

Thank you, my friend.

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billt

· #4 · 19 d ago

You are more than welcome!

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cmarcumjr

· #5 · 18 d ago

I am about to try Lapua brass after using Winchester brass in my loads. I am using Reloder 22 and 212 gr ELDX. What I see initially is the trim and shoulder bump are different. Even after firing Lapua once with different bullet and power to "fire form" to my chamber, the shoulder didn't change much nor did the case length. The Lapua case length is shorter than what I am using in my Win brass load. I have some Lapua loaded with my go to load and will see how it shoots soon.

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cliffspot

· #6 · 18 d ago

wag5150 said:
I’ve been using Norma brass for my 300WM. Let’s say I’m using 77.2 of H1000 in Norma brass, how much different will Lapua brass be? Just bought Lapua for the first time.

Start 10% lower than your Norma load and work your way up. Chrono all increments. Never assume anything when loading.

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