rodregier
Member
I was curious what was the experience for other uses of the Winchester WC91 9mmx19 ammunition product?
http://www.winchester.com/products/handgun-ammunition/Performance/Super-X-handgun/Pages/WC91.aspx
The published nominal spec for the WC91 product is a 115g projectile at 1190 ft/sec out of a 4-inch barrel.
A friend asked me to chrono some of this product that he had acquired. The sample I evaluated had a mean velocity of 1087.5 ft/sec out of a 4.5" G17 (based on 8 rounds). That's seriously slow, to the point that function problems can be encountered. (Which is what my friend was experiencing just with the WC91 ammunition).
Have others found the WC91 actual loadings to be this anemic?
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By way of comparison, I also chronoed some Q4172 with a nominal spec of 115g projectile at 1190 ft/sec out of a 4-inch barrel.
http://www.winchester.com/products/handgun-ammunition/Value/Full-Metal-Jacket-handgun/Pages/Q4172.aspx
My chrono testing for that lot of the Q4172 was a mean velocity of 1145 ft/sec (based on 8 rounds). That's much closer to the published spec, and less likely to create function issues.
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What I like to see in 9mmx19 factory ammunition is an IPSC power factor floor of at least 132.
(115g @ 1148 ft/sec floor - SAAMI spec for such is say 1170 ft/sec
(124g @ 1065 ft/sec floor - SAMMI spec for such is say 1110 ft/sec
http://www.winchester.com/products/handgun-ammunition/Performance/Super-X-handgun/Pages/WC91.aspx
The published nominal spec for the WC91 product is a 115g projectile at 1190 ft/sec out of a 4-inch barrel.
A friend asked me to chrono some of this product that he had acquired. The sample I evaluated had a mean velocity of 1087.5 ft/sec out of a 4.5" G17 (based on 8 rounds). That's seriously slow, to the point that function problems can be encountered. (Which is what my friend was experiencing just with the WC91 ammunition).
Have others found the WC91 actual loadings to be this anemic?
\\
By way of comparison, I also chronoed some Q4172 with a nominal spec of 115g projectile at 1190 ft/sec out of a 4-inch barrel.
http://www.winchester.com/products/handgun-ammunition/Value/Full-Metal-Jacket-handgun/Pages/Q4172.aspx
My chrono testing for that lot of the Q4172 was a mean velocity of 1145 ft/sec (based on 8 rounds). That's much closer to the published spec, and less likely to create function issues.
\\
What I like to see in 9mmx19 factory ammunition is an IPSC power factor floor of at least 132.
(115g @ 1148 ft/sec floor - SAAMI spec for such is say 1170 ft/sec
(124g @ 1065 ft/sec floor - SAMMI spec for such is say 1110 ft/sec