6.5mm 123 grain Scenar Meplat size

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#1 Post by **ovenpaa** » Sat Sep 07, 2013 9:42 am

I have just opened a box of 123 grain Scenars to start loading with and spotted the meplat, well when I say spotted it I mean I nearly fell into the hole, it is massive at around .085" Has anyone tried pointing them to close the meplat down to a sensible size and if so what were the results like?

DaveT · #2 Post by **DaveT** » Sat Sep 07, 2013 10:19 am

I use these in 260 Rem out to 1000 yards and find them very accurate 'as is' but would be interested in any improvements that come up.

StanDeasy · #3 Post by **StanDeasy** » Sat Sep 07, 2013 10:26 am

That doesn't sound right. I still have a few boxes which I bought when they first came out and they have well-formed meplats measuring .063-.064.

I should query it with Lapua.

SD

#4 Post by **ovenpaa** » Sat Sep 07, 2013 10:33 am

I have just gone through a good handful and they are all > 0.080" Do either of you have new blue box Scenars to hand, if so I would be interested to hear what they measure across the meplat.

#5 Post by **waterford103** » Sat Sep 07, 2013 10:38 am

ovenpaa wrote:I have just gone through a good handful and they are all > 0.080" Do either of you have new blue box Scenars to hand, if so I would be interested to hear what they measure across the meplat.

.063 - .065 over 5 bullets

StanDeasy · #6 Post by **StanDeasy** » Sat Sep 07, 2013 11:24 am

What about OAL? My batch are around 1.301". Brian Litz's book says 1.302""

This is a long bullet for it's weight and Brian Litz's Twist Rate - Stability Table shows a worst-case stability factor of 0.97 in a 1:8" twist bbl. - which is unstable!!

#7 Post by **ovenpaa** » Sat Sep 07, 2013 11:30 am

1.295" to 1.298" for the few I checked from the first box, second box is 1.300 " for the half dozen I checked and the meplat is similar to the first box. As a comparison the 139 Scenars I have are .010" smaller across the meplat.

#8 Post by **ovenpaa** » Wed Sep 11, 2013 8:41 am

I took time out to machine a sleeve last night so I could see how they point. The original Meplat form is on the right, they will take a finer point however I prefer to stop at around .036" It will be interesting to see what sort of a difference this will make at 1000 yards, I would usually expect around 3/4MOA however these are such open Meplats it could be more.

#9 Post by **mag41uk** » Wed Sep 11, 2013 9:03 am

David,
If this works I would be interested in a meplat tool.
Tony

#10 Post by **ovenpaa** » Wed Sep 11, 2013 9:27 am

Tony, I have built systems for 6.5 .284 and .308 in the past covering everything from 139/140 6.5s to 210 grain .308s however the little 123 Scenar is a new one to me. In theory it should be OK and I am looking forward to testing it at our next LR day.

I just tested and managed to get the meplat down to .020" which is quite an improvement over the original form.

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6.5mm 123 grain Scenar Meplat size

6.5mm 123 grain Scenar Meplat size

Re: 6.5mm 123 grain Scenar Meplat size

Re: 6.5mm 123 grain Scenar Meplat size

Re: 6.5mm 123 grain Scenar Meplat size

Re: 6.5mm 123 grain Scenar Meplat size

Re: 6.5mm 123 grain Scenar Meplat size

Re: 6.5mm 123 grain Scenar Meplat size

Re: 6.5mm 123 grain Scenar Meplat size

Re: 6.5mm 123 grain Scenar Meplat size

Re: 6.5mm 123 grain Scenar Meplat size

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