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Anyone else using these in Glocks? I noticed recently that they offer a 200gr .452 TC and decided to try some. I did just enough to chronograph 2 loads (4.2gr Clays, 4.6gr Promo, both loaded to 1.205" with CCI LP). They worked, and I got the expected velocities from them:
4.2gr Clays: G21: 816fps, G30S: 784fps
4.6gr Promo: G21: 821fps, G30S: 794fps
Accuracy, though, was not good. I don't know whether to blame the bullets or the weather. It was about 100F. I was avoiding shade, because last time I chronographed in the shade, I had a lot of trouble with bogus low readings (200-300fps). The sun was so intense, that putting my 21SF on the table long enough to record data and paste the target, after a couple of times, the frame was so hot it hurt to pick it up. Loaded ammo on the table (in ziplocks) also got too hot hold. I'd just cleaned both guns last night, and did fire a few rounds of other ammo first, just so I wasn't working with a totally clean barrel...and those first shots went where I expected.
I liked the feel of the Promo load better, so I guess I'll load 50-100 more of those and do some more testing under more bearable weather conditions.
4.2gr Clays: G21: 816fps, G30S: 784fps
4.6gr Promo: G21: 821fps, G30S: 794fps
Accuracy, though, was not good. I don't know whether to blame the bullets or the weather. It was about 100F. I was avoiding shade, because last time I chronographed in the shade, I had a lot of trouble with bogus low readings (200-300fps). The sun was so intense, that putting my 21SF on the table long enough to record data and paste the target, after a couple of times, the frame was so hot it hurt to pick it up. Loaded ammo on the table (in ziplocks) also got too hot hold. I'd just cleaned both guns last night, and did fire a few rounds of other ammo first, just so I wasn't working with a totally clean barrel...and those first shots went where I expected.
I liked the feel of the Promo load better, so I guess I'll load 50-100 more of those and do some more testing under more bearable weather conditions.