9mm. Rainier 115 gr RN (plated, Rainier says load as lead, or 10% lower than FMJ). Clays (just Clays, not Uni., etc). Hodgdon's lead data says min is 3.0gr, max is 3.4gr. I have yet to find 115gr FMJ with Clays load info for comparison. Primers are Win magnum small pistol (could only find magnum locally, and was told pressure difference was not a concern if not loading to max). OAL is 1.10"
So my XD9SC cycled fine with 3.1 and 3.4 loads. Both standard & mag primers.
New M&P Pro 9 stovepiped almost 100% on both 3.1 and 3.4. Shot Blazer Brass no problem. Shot commercial reloads (6 rounds) no problem. When I alternated Blazer & my 3.4 load, I could feel almost no difference in recoil & noise. (But I've only been shooting 4 months, so I may not have the most astute perceptions.) The 3.1 did feel/sound soft.
I was advised to work up small groups of hotter loads, incrementing .1 ( 1/10th) of a grain on each set, until slide cycles properly.
Obviously my main concern is creating a dangerous pressure situation. I'm not looking to create a "hot load", only a load that'll cycle the pistol with confidence.
Comments, suggestions? Things to look for that indicate overpressure?
(BTW, for now, I only have Clays & the magnum small pistol primers. CCI small primers & Hodgdon HP38 are on order, with unknown ETA.) FYI - I'm using 4 die Lee turret.
So my XD9SC cycled fine with 3.1 and 3.4 loads. Both standard & mag primers.
New M&P Pro 9 stovepiped almost 100% on both 3.1 and 3.4. Shot Blazer Brass no problem. Shot commercial reloads (6 rounds) no problem. When I alternated Blazer & my 3.4 load, I could feel almost no difference in recoil & noise. (But I've only been shooting 4 months, so I may not have the most astute perceptions.) The 3.1 did feel/sound soft.
I was advised to work up small groups of hotter loads, incrementing .1 ( 1/10th) of a grain on each set, until slide cycles properly.
Obviously my main concern is creating a dangerous pressure situation. I'm not looking to create a "hot load", only a load that'll cycle the pistol with confidence.
Comments, suggestions? Things to look for that indicate overpressure?
(BTW, for now, I only have Clays & the magnum small pistol primers. CCI small primers & Hodgdon HP38 are on order, with unknown ETA.) FYI - I'm using 4 die Lee turret.