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Old November 27, 2013, 01:34 PM   #37
CDW4ME
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Join Date: March 18, 2009
Posts: 1,321
I can't quote on this forum

It was obvious that the 175 gr. Critical Duty produced less recoil than the Hornady 155 gr. XTP.

Same Glock 29 previously got a 1,278 fps average (562# KE) with 155 XTP.
The 175 gr. Critical Duty produced a 1,077 fps average (451# KE)

I thought the 175 gr. CD kicked less than the 155 XTP and the power factor calculation supports my opinion.
175 gr. @ 1,077 fps = PF 188
155 gr. @ 1,278 fps = PF 198


Some of what I posted before ^

I thought about this further, I think the Critical Duty 10mm would make a good carry round for my Glock 29 especially in winter. The polymer tip should eliminate the ability heavy clothing to clog the hollow point preventing expansion.

The 155 XTP with a PF of 198 is pushing my limit for a quick* (about 1/3 second) 2nd shot out of the 29.
* My 2nd shot average time is based on both the 1st and 2nd shot hitting a 6'' circle placed at 6 - 7 yards; hitting out of the 6'' circle or simply inside a silhouette doesn't meet my criteria.

For comparison:
My Glock 30 (45 acp) is very controllable with either of these loads:
Federal Hydra-Shok 230 gr. @ 807 fps = PF 186
Hornady 185 gr. XTP @ 970 fps = PF 179

The Critical Duty 10mm produced a comparatively controllable PF of 188

Not saying the Critical Duty is a "better" load for SD than either of those 45 acp loads, but the recoil is comparable and capacity is increased; my flush fitting Glock 30 magazines hold 8 rounds versus 10 rounds in the model 29 magazines.
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