Looking For some feedback

[p3fe(ret)]

Hi All

Just got a chrono and ran some rounds over it today. Gun is a 3.8 XDM 9mm.

I shot one group of ten each for the different powder loads. Wanted to post the results to see if I'm on the right track.

OAT was about 77 degrees winds calm. Chrono was in the shade but straight line of sight up.

First set:

mixed brass AA2 4.0 at 1.12 OAL Bayou 135 grain

948 H

927 L

938 Avg

21 ES

6 SD

126 PF

Second set:

mixed brass Solo 4.2 at 1.12 OAL Bayou 135 Grain

989 H

927 L

976 Avg

25 ES

8 SD

131 PF

I am going to raise the AA2 load by .2 grains and see what PF I get with it.

Every once in a while the slide will not lock back and FTF with the AA2 load. This is the wife's gun so I can't get radical.

She does like the feel with the AA2 but she has RA so need to keep recoil reasonable. She will normally shoot 250/300 rounds at the range.

Since this is a compact with a double spring I think an extra .2 grains, if not more, should help out.

I am only using the Bayou Bullets, love them. I know I could go to 147 grain but still have 2K of the 135's.

[sroe3]

If the slide doesn't lock back or sometimes doesn't pick up the next round properly then your load is too light to cycle the slide completely to the rear. Sounds like you're going about it correctly. Test and tune.

[Red Ryder]

Chrono strings of 20 rounds to get more accurate results. Good luck.

[p3fe(ret)]

Chrono strings of 20 rounds to get more accurate results. Good luck.

OK....will try some 20 round strings and go up .2 with the AA2.

Edited May 8, 2012 by p3fe(ret)

[p3fe(ret)]

Chrono strings of 20 rounds to get more accurate results. Good luck.

Edited May 9, 2012 by p3fe(ret)