A day at the range: Some questions

[DesG]

Have you checked the primers in the fired cases for signs of over pressure? Flattening and enlarged firing pin strike. Sounds to me that you may have compressed your powder charge if you seated the bullet in deeper. That will certainly increase the pressure. I only used 115 gn rn in the olden days when I had my 9 mil.

[tinbum]

Thanks all! I barely crimp at all, but the seating is deeper through necessity as the ogive was just catching the rifling at the round nose setting. I will get my very near gauge out when I do some loading later.

[IMG][/IMG]

[Black Beard]

What are you putting in them?

Also, check the bullet diameter between the two with a micrometer.

[tinbum]

What are you putting in them?

Also, check the bullet diameter between the two with a micrometer.

Round nose 8.99mm, HP 9.01mm nominal. I am using 5.2grn Vectran BA9 and there is no compacting of the powder. I will head back to the range with a chrono in the next couple of days as I am not happy firing 9mm in my home indoor range.

[DesG]

Round nose 8.99mm, HP 9.01mm nominal. I am using 5.2grn Vectran BA9 and there is no compacting of the powder. I will head back to the range with a chrono in the next couple of days as I am not happy firing 9mm in my home indoor range.

You can go off people you know!

[Black Beard]

I'd drop the charge a bit to 4.5 grains on the hollow points and leave it there if it feels okay. The FMJs look slightly undersize which will reduce their pressure a fair bit in jacketed.

[tinbum]

Since last we spoke I bought more powder, but they were out of my usual and I got something different.

Quelle Horreur!

I have gone from Vectan BA9 (tiny grains) to Vectan A1 (big flakes). The shop assured me this burns cleaner and suggested just 3.7gr behind the 124g FMJ. This corresponds with near the upper limit of what the chart says, which is what I used with the BA9 also.

I loaded ten to try tomorrow, I have a new brass catcher to test too, so two birds and all that.