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Loading 40 with titegroup and 180gr bayou


Chips0410

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Recently acquired some 180gr bayou fp 40 bullets .. Looking to see if anyone has a good load for the bullet using titegroup ? It will be shoot through a 5.1 sti eagle used for uspsa so as close to major power factor as possible

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4.5-5.0 depending how stout you want it. I use an OAL of 1.135 but you can also lengthen that out quite a bit depending on your specific auto. Note, always "verify" with various load data and start low and work up which goes without exception.

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I'm switching to Limited from SS so I recently picked up a M&P .40 Pro and worked up loads with Tightgroup using 180 Gr Montana Gold JHP

Today i went and tested loads with the chrono today and here are the results:

(strings were 15 rounds each, temp 82 deg)

String #1 4.3 seated to 1.130 averaged 878 ES: 52 SD: 13

String #2 4.3 seated to 1.130 averaged 879 FPS ES: 30 SD: 9

String #1 4.4 seated to 1.130 averaged 904 ES: 39 SD: 10

String #2 4.4 seated to 1.130 averaged 906 ES: 34 SD:10

String #1 4.5 seated to 1.130 average 918 ES: 39 SD: 10 (This barely makes Major PF so I need to bump to 4.6 or seat lower to gain a few FPS safely)

String #2 4.5 seated to 1.130 average 905 ES: 54 SD: 17

I loaded more tonight at the same 4.5 but moved the seat down to 1.127 to see if I can safely move the FPS up without going to extreme on the pressure.

Hope to get back to the range tomorrow and I'll post up results.

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  • 2 weeks later...
  • 3 weeks later...

I'm switching to Limited from SS so I recently picked up a M&P .40 Pro and worked up loads with Tightgroup using 180 Gr Montana Gold JHP

Today i went and tested loads with the chrono today and here are the results:

(strings were 15 rounds each, temp 82 deg)

String #1 4.3 seated to 1.130 averaged 878 ES: 52 SD: 13

String #2 4.3 seated to 1.130 averaged 879 FPS ES: 30 SD: 9

String #1 4.4 seated to 1.130 averaged 904 ES: 39 SD: 10

String #2 4.4 seated to 1.130 averaged 906 ES: 34 SD:10

String #1 4.5 seated to 1.130 average 918 ES: 39 SD: 10 (This barely makes Major PF so I need to bump to 4.6 or seat lower to gain a few FPS safely)

String #2 4.5 seated to 1.130 average 905 ES: 54 SD: 17

I loaded more tonight at the same 4.5 but moved the seat down to 1.127 to see if I can safely move the FPS up without going to extreme on the pressure.

Hope to get back to the range tomorrow and I'll post up results.

In my experience the M&P can accept way longer than that. And remember that seating the bullet deeper means your pressure is going UP. That's why people load longer with a tick more powder.

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  • 2 weeks later...

I'm switching to Limited from SS so I recently picked up a M&P .40 Pro and worked up loads with Tightgroup using 180 Gr Montana Gold JHP

Today i went and tested loads with the chrono today and here are the results:

(strings were 15 rounds each, temp 82 deg)

String #1 4.3 seated to 1.130 averaged 878 ES: 52 SD: 13

String #2 4.3 seated to 1.130 averaged 879 FPS ES: 30 SD: 9

String #1 4.4 seated to 1.130 averaged 904 ES: 39 SD: 10

String #2 4.4 seated to 1.130 averaged 906 ES: 34 SD:10

String #1 4.5 seated to 1.130 average 918 ES: 39 SD: 10 (This barely makes Major PF so I need to bump to 4.6 or seat lower to gain a few FPS safely)

String #2 4.5 seated to 1.130 average 905 ES: 54 SD: 17

I loaded more tonight at the same 4.5 but moved the seat down to 1.127 to see if I can safely move the FPS up without going to extreme on the pressure.

Hope to get back to the range tomorrow and I'll post up results.

In my experience the M&P can accept way longer than that. And remember that seating the bullet deeper means your pressure is going UP. That's why people load longer with a tick more powder.

I went through the Chrono stage at IPSC National Championship, my load is 4.8 grains of Titegroup, 180 FMJ FP Precision Delta, 1.185"

938 FPS, 945 FPS, 902 FPS.

When I saw the low one, I was worried bit I just made Major Power Factor 170.2.

On the can it says 4.7 grains max, and should be 970 FPS or something close, I can't recall but figured it would be well over the power factor of 170.

It is a pretty snappy load and pretty loud.

Will try CSB 1 next and some 200 grain bullets.

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I use 4.3 with 180 gr blue bullets at 1.135 made major pf at Uspsa area 8 match.

USPSA is 165 for msjor power factor, IPSC is 170.

I shoot STI's they need to be longer to feed reliably.

I may try some with 4.4 for 3 gun.

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