9 Major M&P Silhouette

[KungPfoo]

I just ran some test loads through my Chrono Today And I thought I would pass the info along to anyone interested.

I was shooting a M&P Pro with a KKM 5 inch barrel + threading for a Carver 4 Port Comp.

Temp was 65 Degrees and sunny at approx 7,000 feet ASL Using a CE Pro Chrono Digital at 15 Feet.

I was loading mixed headstamp once fired 9mm brass, Remington SPP, MG 124 CMJ, Loaded to 1.183 OAL.

I started at 7.0 Gr working up 0.2 Gr at a time looking for pressure signs on primers, Powder is Ramshot Silhouette

7.0 Gr, 163 PF, 1315 Fps Avg, 8.7 SD

7.2 Gr, 168 PF, 1355 Fps Avg, 15.4 SD

7.4 Gr, 171 PF, 1378 Fps Avg, 11.1 SD

7.6 Gr, 174 PF, 1404 Fps Avg, 11.6 SD

7.8 Gr, 176 PF, 1420 Fps Avg, 7.4 SD

8.0 Gr, 181 PF, 1459 Fps Avg, 5.0 SD

I had some 8.2 Gr rounds loaded but didn't see the need to exceed 181 PF.

I'm not even seeing flattened primers at 180 but don't see the need to run the gun that hot. It also felt best around 7.6-7.8 Gr

[HI5-O]

How clean or dirty are the loads you tested?

I've been seeing more carbon and some yellow grains of residue when using Silhouette in my 38SC loads.

[KungPfoo]

I only shot about 120 rounds but they are quite clean, no flakes, just a fine black carbon coating like I see with most 9mm factory loads.