Thread: REX powder data
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Old 08-18-2011, 14:41   #16
robert91922
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Originally Posted by robert91922 View Post
Here's chrono report for 180gr XTP's / Rex Magnum / CCI 300 LP / Glock 20 / IGB 4.6 barrel w. full supported chamber. Temp. was 21C ( 70F).

load (grains) average (fps)
11.0..............1272
11.2..............1281
11.4..............1285
11.6..............1290
11.8..............1291
12.0..............1306

Accuracy good (see target at 27 yrds bellow). Primers still OK, not flattened at all. Case Head Expansion at max. 0.431 but due to tight and full supported chamber of IGB barrel this could not be relevant. I think Rex Magnum/180gr combination has still some way to go so a day after loaded another batch of 12.2 to 12.6 gr.
Data for 12.2 – 12.6 loads are gonna follow within few days after next trip to the range.

Similar batch with Vihtavuori 3N38 powder was done as well, it could be seen in Vihtavuori Powders sticky thread.

And here are some of that day's photos:

10mm Reloading Forum
10mm Reloading Forum
10mm Reloading Forum
and here are data of following batch, the rest is the same as above, only temp. was 2 or 3 higher - can't recall that, forgot to write it down then.

load (grains) average (fps)
12.2......................1330 ES 20.68 SD 9.94
12.4......................1339 ES 18.44 SD 8.88
12.6......................1346 ES 15.72 SD 7.14
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Last edited by robert91922; 08-18-2011 at 14:51..
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