The Good The Bad and The Ugly About Yor 6.5 Sherman Short

elkaholic said:

Thank you sir. I'm not crazy after all

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H59 said:

Those are exactly what I was saying as well!!! The only difference is instead of his 2.990& 2.2280....mine referred to 2.940, as coal and my sst reamer print says 2.3051" to lands... your reamer printout to the sst,not my measurement

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parshal said:

I wish I was getting the velocities you guys are getting. I've made two 65 SS both with 26" Proof barrels, one steel and one carbon. With 140 ELD's, 140 Berger EH and 143 ELD-X's I'm between 3150 and 3190 with N570 and H1000. R26 gets me a bit over 3200. I've not gotten close to 3250 with any combination. My max loads are 59.9 H1000, 61.9 N570 and 59.2 R26. I was out today at 76 degrees and both the H1000 and N570 loads had some bolt resistance on opening.

My steel barrel is on a Kelbly Atlas and I didn't need to notch the ramp. The carbon is on a Defiance UL and I'll probably need to notch it. I'm running it on a Magpul chassis until my Manners shows up and I'll run it as a BDL for my mountain goat hunt in September.

I've got three Whidden sizing dies. I'm really not happy with any of them. The first one will stick a case every 10 cases or so. I tried every lube out there and nothing stopped it. I polished it with lapping compound and finished with Flitz in the lathe and no change. The second one is much better but the outside threads are very tight in my MEC Marksman press so I use that in the Co-ax so I don't have to thread it. I had Whidden make me one of their click sizing dies because the first two would size very inconsistently. Cases will vary .003" and an occasional .006". With the click die I can adjust the shoulder bump .001" at a time. It works but I still get variation. My testing found it depends on how much lube you use but I still can't get it consistent enough. I just measure all the sized shoulders and group them. The .003" difference shows up on the target at 100 yards.

I've been using Norma brass and, when run hard, pockets open in a couple firings. I found some Bertram 7 SAUM brass and it's much tougher. The primers are actually hard to fit even after two firings. The Bertram brass is about 20 fps slower than the Norma, though.

Regardless of the velocity, both rifles are tack drivers. I don't have targets to show like Mateo but they're darned close.

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Clifflopez said:

Wow, that's a lot of stress. Mine is being built now with a 24" 7 twist proof sendero. I plan on shooting either 147eld, 150smk, 156 Berger, or 160 matrix. 140s are an option but if it blows em up I just won't shoot them.

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