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 Lapua brass case thickness 
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Location: East Hill, Kent
Joined: Fri Nov 30, 2012
Posts: 102
I have a T/C Encore in 6.5x55. I have been shooting Winchester brass in it and now have some Lapua brass. Prepared the Lapua brass got it ready to load only to fine that the brass in the necks is thicker and will seat with a bullet inserted. :angryfire: So now I have a 100 rounds with primers inserted ready to shoot and they will not work. I could have used them in my CZ550 but I'm selling it. So should I look into necking them(I'd have to buy anything), or just trade them? Never did necking before seems like a lot of work.
Brian


Sun Feb 05, 2017 9:17 pm
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Location: Marysville, WA
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Real Name: Mike
Usually Lapua brass neck thickness in that caliber runs around .014 - .015" in neck thickness. About .001" thicker on average than other brands.

When you say "necking" I assume your referring to Neck Turning.

Before you jump to that step, do you have any fired cased from that rifle? If so, size and seat a bullet in it then measure the OD of the neck,

Take a piece of the Lapua brass and do the same.

Subtract the Old case OD from the New Lapua brass, both with bullets seated, and that's the amount you will need to remove to make the Lapua the same as the old brass.

If you don't have any brass then get some Cerrosafe and cast the chamber so you can measure the ID of the neck area. Subtract .002-.003" from that reading an you will have the OD you will need for a freshly loaded round's neck.

Neck turning tools I recommend are the Forster's, Sinclair, Century 21, or K&M. DO NOT even consider the RCBS took. Price is attractive, tool is junk. There are numerous YouTube videos on how to neck turn.

If you want my recommendation for a neck turning tool, I love Sinclair. Expensive but the NT-4000 is a fantastic tool you can adjust the amount of cut by .0002" at a time. The Forster Neck Turning tool is more economic and does a great job too. Just a little smaller and makes your hand tired after 5-6 cases so you have to turn a batch in a lot of "sessions".

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Mon Feb 06, 2017 6:54 am
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