LHshooter

I'm aware of that but thanks for pointing it out for others. I thought about adding a side note in my original post to alert people who may not know, I guess I should have. The CCI Blazer box specifically states not to use in comps or ported barrels. I only shot enough rounds for the chrono comparison. I also bought a case but will use them in my non-ported barrel. Kinda sucks that their so called FMJ is so thin plated.

I was surprised by the results from the Blazer and North Florida rounds since the change was so little. I want to go back and retest those two rounds to see if I get the same close results. As far as how the ammo shot. I thought the UMC and PMC 115's were the flattest and has the least dot rise. The North Florida 125's were close behind, along with my Summit City 124 reloads. I'm going to bump up my load for the Summit City by another grain or two to 4.2 or 4.3 and see how they shoot through the ported barrel. When I shot the 147's it almost seemed as though the slide was moving in slow motion. Overall, I've got about 650 rounds through this pistol now with no hiccups at all.

Yes, minor in IDPA is 125 PF. Regarding the powders in the loads, they were as follows: Missouri Bullets - 3.1 gr Titegroup Hoosier Bullets - 3.2 gr Titegroup Summit City - 4.1 gr N320 Both Berry's used Universal but I don't know how much (they were given to me) The factory ammo I obviously don't know. NOTE:: I noticed an error for the std. dev. for the Berry 115 gr. should be 39.56 not 24.68. I have uploaded a corrected table in my original post.

I chrono'd the ported barrel for my MPA DS9 this morning using the same 11 types of ammo for when I chrono'd my non-porting barrel. I decided to get both barrels when I ordered the pistol thinking I might use the ported barrel for CO in IDPA and the non-ported for LO in USPSA. Results are in the table below: Looks like I've got some work to do to find the best load since I had planned on using 115's or 124's in this pistol.

I received an MPA DS9 about a month ago with ported and non-ported barrels. I chrono'd 11 different rounds (115, 124, 147 grain, factory and reloads) through the non-ported barrel a couple weeks ago. Tomorrow I plan on going to the range and chrono the same ammo through the ported barrel. I will post the results. This should be an apples to apples comparison unlike the article in The Armory Life. Stay Tuned.

X2 on RHT holsters. Have 5 of them and hav3 been very happy.

Did you register your optic on their website after you bought it? I have two of theirs and so far no problems but I know someone who had an issue and they replaced it ASAP.

According to training videos I have seen that is exactly the way you are supposed to do it, so that is my method.

I too am a recent convert from TG to N320. In my G17 3.1 gr TG gives me 131 PF for 147 gr coated In my G34 3.1 gives me 132.5 In my DS9 3.1 gives me 130 I haven't loaded 147 with N320 but I need 4.1 gr to get 133 PF with 124 gr coated. I would think 3.1 or a tad higher will give the same PF for 147

Yes, this DS9 is designed to fit the box with the ambi safety. The left side is wider than than the right side. As a LH shooter I would prefer the opposite but MPA doesn't offer that option. Atlas offers both RH and LH ambi safeties both shielded and unshielded. They also offer IDPA shielded and unshielded safeties but I would have to verify that they would fit the box if I decide to swap it for the one I have now.

It's weird, everything is smooth and chamfered but when I press the web of my hand against the beavertail it seems to wedge between those tangs at the back of the safety and the grip and get pinched as shown in the photo of my hand. But then, the more I've been dry firing, I'm starting to feel it less. I'm gonna see some shooting buddies at a USPSA match Sunday and have them grip it to see what they think. The whole thumb safety thing is new to me. I know Atlas Gunworks makes an ambi safety for LH shooters that has the wider "ledge" on the right side of the safety so I can manipulate and rest my shooting hand thumb on it. I may swap it out for the Atlas one.

Don't know how to answer "which safety". As far as I know all MPA DS9 pistols have the same ambi thumb safety. It is for a RH shooter since the safety is wider on the LH side of the pistol. It's hard to tell in the photo I uploaded but the back corner of the safety on both sides extends just a hair beneath the beaver tail and feels like a "spur" when I grip. The safety is chamfered (looks like a shadow in the photo) but when I press my hand into the beavertail I can feel it. You can see where it hits my hand in the other photo. Looks worse since I have been dry firing every day doing maybe 50-100 draws while releasing the safety. Don't know if I should remove the safety and file it down.

I had hoped to fire/chrono the ported barrel by now but have been busy. Won't get to the range until next week unfortunately but I will post ported vs non-ported results. Glad you like your DS9 Hybrid. The only issue I've been having is that the corner of the thumb safety extends down a little and it is eating into my hand. This is my first thumb safety pistol and maybe I'm just not holding it right. I may have to remove it and file it down. Otherwise the gun is terrific.

Unless your buddy has alligator skin hands it sounds like he got the wrong grip. Maybe MPA can tell without him having to send it back. They have a good reputation for taking care of customers so worst case I'm sure they'll swap it if there is a mistake.

Yes it is the A3 aluminum grip and it is very aggressive. At last weekends match everyone who tried it thought it was too aggressive. One guy told me i needed to sand it down. MPA may have given your buddy the wrong grip. There is no way my grip will slip in the hand. My hands sweat a lot in the summer and I was tired of coating them with white goop to keep them dry, that's why I opted for the A3 grip. I know two people with the A2 grip, and while I wouldn't call it slippery it is definitely less aggressive than mine. I have no idea what the A1 grip texture is like.

I shooting buddy has been using them religiously and never had any issues. He got me 1500, and of the ones I have shot I haven't had any issues either during reloading or firing. I was going to buy more but the local retailer jacked the price up by over 20% so they aren't as cost effective anymore. I was getting them for $9/150 and they raised them to $11

I've had my DS9 IDPA for a couple weeks now and couldn't be happier. Have about 375 rounds through it with no issues at all. Only used it in 1 match so far. I still have to get used to drawing, releasing the safety, and finding the dot consistently. Have used a Sig X5 with a Holosun for so long. This is my first 1911 and I put an SRO on it. Need to put in some dry fire time.

I have LOTS of 147 gr reloads which I know are not ideal for this pistol. I used them at my last match since I didn't have enough 124 gr reloaded yet. Someone replied that the slide was moving so slow. My plan is to use 124 gr Summit City bullets with 4.1 gr of N320. That gives me a PF of 133. I now have enough loaded to last me several matches. I haven't had a chance to run all those ammo loads shown in the table through my ported barrel to see which load will work best.

I use Slip 2000 most of the year and Slide Glide when it is hot out.

Finally got to shoot my new DS9 pistol a couple days ago. Since some pistols can be tempermental, I had 11 different kinds of ammo to fire consisting of factory and reloads. I also chrono'd every type of ammo and fired 25 rounds each, for a total of 275 rounds with no issues whatsoever. The pistol shot great, no matter the ammo. I will say the A3 aggressive grip will not be for everyone. I ended up with a little bit of "road rash" on my support hand in the meaty part just below my thumb. I think that was due to me rubbing my hand on the grip as I was canting it. My firing hand was fine. The chart below shows the chrono results. I happened to chrono 6 of those ammo types through my Sig P320 X5 last week and the DS9 PF results were basically 3 to 5 higher for every ammo type. The temp was 5 to 10 degrees cooler than a week ago so the DS9 results would have been marginally higher had I shot it a week ago. This barrel is a nice step up from the X5 barrel, but then it should be. I shot an IDPA match today and put almost 100 rounds through it, again with no issues. I only forgot to release the thumb safety once - duh. I guess I'll learn. I will say, everyone that checked out the pistol just loved the slide. One guy described is as putting some oil between two sheets of glass and rubbing them. Also, just about everyone thought the grip was too aggressive, but I didn't have any hands issues today. I'm still glad I went with the A3 grip texture. Very happy with the pistol. Since I also bought a ported barrel with the pistol, my next plan is to chrono the same ammo with the ported barrel and see how the PF's compare ported vs non-ported.

I watch this guy on YouTube that routinely shoots steel plates out to 100 or 110 yards, just blows me away. We rarely have longer distance shots at my local matches and then in the last 2 weeks we had two. A uspsa match with 2 targets at 35 yds with 6 shots on each and then an idpa match with a target at 30 yds with 12 rounds. Lot of guys dropped a lot of points. I should probably try 50 yds to see if I make paper and practice more at 25 although I usually do good at that distance. I can routi nail the plate rack at that distance, even with my new pistol yesterday. 50 yds I don't know., with my eyes I don't even know if I will see it.

Don't know 1911s well enough yet to attempt that task. I may be mistaken but I think Atlas makes a safety for LH shooters that is a mirror image of the standard one and has the "weak" portion on the left side of the grip, but I don't know if it only works with their pistols. If you buy an Atlas with a LH mag release they make the mag release in house and the grip is machined for it so maybe the grip is also machined for their " LH" ambi safety. I don't know for sure.

Saw a video about that on the Atlas website I think. I have not operated the safety much yet since I've only had the pistol a week, but sometimes it feels like it does take some force to disengage, but never having had a 1911 I really can't tell. Maybe I should buy a spare safety now in preparation for having to replace it. BTW thanks for the replies. Gives me something to work on. Have a local idpa match tomorrow so I'll see how I do with this new pistol and dot.

After years of shooting striker-fired pistols I just bought an MPA DS9 pistol and shot it for the first time yesterday. I had previously read that people use the thumb safety to help mitigate muzzle flip. When I was shooting, I sometimes (not frequently) pulled shots low and to the right(I know RH shooters will pull shots low left). I'm pretty certain it was not due to pushing the trigger since that never really ever happened to me with my other guns and this pistol has a great trigger. So, I'm wondering if I was pushing too hard on the thumb safety with my (left) firing hand thumb and thereby puling shots low right. Not sure if I should just place my thumb on the safety and not push or adjust my grip (support hand pressure??). This pistol shoots pretty flat. Any ideas/suggestions? Thanks

Reminds me of a stage at the tier 4 space coast challenge last November. There was a stage where at poc 2 there was a wall going downrange. There was one mover on the rh side and 2 on the lh side. All 3 were activated at the same time by dropping a box on the table. The SOs were letting people shoot the targets in any order with no regard to tactical priority or being exposed to a target. It was a confusing stage but we shot like they said we could which made it a little easier. BTW that was a great match. I think there were something like 25 or 30 movers, some of which presented multiple times. That club has got great props. Wish I could shoot there on a regular basis.