Fiocchi .25 ACP 50gr FMJ in Clear Ballistics Gel.

Test Gun: FN Baby Browning
Barrel length: 2.11 inches.
Ammunition: Fiocchi .25 ACP 50gr FMJ.
Test media: 10% Clear Ballistics Gel.
Distance: 10 feet.
Chronograph: Caldwell Ballistic Precision Chronograph G2.
Five shot velocity average: 654fps
Gel Temperature 70 degrees.

*Note* This test was conducted with Clear Ballistics Gel. Clear Ballistics is a synthetic gel and does not correlate with Organic gelatin like Vyse Ballistics gelatin.

This will more than likely be the last .25 test I will do. Unless I see something in the future to change my mind, I just don’t see the point.

I got a five-shot average velocity of 654fps with a high of 687fps and a low of 624fps.

Five shots at five yards offhand.

The two round’s in the bare gel had a velocity of 693fps and 642fps. Penetration was 12.25 and 11.5 inches. 50 and 49.9 grains were the recovered weight and just in case you were wondering there was no expansion. The first round showed sign of tumbling about midway through and stopped base first. The second round did not show and signs of tumbling and was recovered nose forward.

In the heavy clothing gel, the first round’s velocity was 671fps and it penetrated to 9.25 inches. The second round hit the block at 674fps and penetrated to 9.5 inches. Neither bullet expanded and the recovered weight was 49.6 and 49.3 grains. Both bullets showed signs of tumbling at the mid point and were recovered base forward.

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  1. Did the bullets penetrate straight-line and remain nose-first, or did they veer and/or tumble? Velocity was disappointingly low.


  2. Thanks for the quick reply and clarification.

    Disappointing that this load is so light, as Browning’s original FN Model 1906 6.35mm (.25 ACP) had the same 2.1″ barrel as your Baby Browning, and the standard 50g FMJ cartridge supposedly achieves 760 fps MV. A small difference in raw numbers, but the loss of about 100 fps leaves this bullet performing at only 85% of its already modest intended velocity.

    Thanks for your tests and write-ups!


  3. It would be interesting to test 73-grain Euro .32 ACP hardball, as it is loaded hotter than US stuff. A 180-degree “flip” continuing base-first is common. The .32 ACP Buffalo Bore hard-cast 75-grain FN is also a great penetrator, as if your .45 ACP Montana Bullet Works load shrunk in the washing machine.

    Liked by 1 person

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