butchlambert
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The first chrono figures. It is being built by a forum member for another forum member. I believe it will be a Palma rifle.
I have finished with the velocity testing for now. Still using the 168 gr. Berger Hybrid out of a 28" barrel. Temperature was 51 degrees. Four powders were tested, and three of them produced good velocity. The burn rate of the Vihtavouri N530 and Accurate 2460 was perfect. The IMR4166 ran out of room at 38 gr. and didn't make much velocity.
N530
36 gr. - 2677
38 gr. - 2795
39 gr. - 2816 (velocity per grain leveling off)
AA2460
39 gr. - 2741
40 gr. - 2793
41 gr. - 2844
N201
37 gr. - 2674
39 gr. - 2789
IMR4166
38 gr. - 2603
I have finished with the velocity testing for now. Still using the 168 gr. Berger Hybrid out of a 28" barrel. Temperature was 51 degrees. Four powders were tested, and three of them produced good velocity. The burn rate of the Vihtavouri N530 and Accurate 2460 was perfect. The IMR4166 ran out of room at 38 gr. and didn't make much velocity.
N530
36 gr. - 2677
38 gr. - 2795
39 gr. - 2816 (velocity per grain leveling off)
AA2460
39 gr. - 2741
40 gr. - 2793
41 gr. - 2844
N201
37 gr. - 2674
39 gr. - 2789
IMR4166
38 gr. - 2603