10mm handloads- shot side by side (chrono results)

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Palladan44

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***Contains load information. All of these loads were crafted by me for my firearms. If you plan to reload, get a manual for the caliber and follow directions in the manual. Start low and work up. Never jump directly up to maximum published loads without doing a ladder for each load in your specific firearm.***

I have several years of 10mm handloads, using 4 different powders, and 7 different (all 180gr) bullets. Most of these are in the upper range of published load data. Yes, I tried to get as much velocity out of my 10mms as safely possible, because why not? Basically, I wanted to harness the same power of a full house .357 Magnum out of a wheelgun, but only I want that power out of high capacity, semi automatic firearms. These guns have practical purpose in both the hunting and defense worlds. If I told you these firearms were solely for practical purposes, and not for a degree of hobbying and some "cool" factor, I wouldn't be telling you the whole truth. Guilty as charged.

As I worked up all of these loads over the years, I noticed no real taper in accuracy as the charges got heavier or to the point of "diminishing returns" (plateau) so to speak in their velocity performance, nor did anything seem overpressured by any observation of mine. (Never really can know without Lab equipment)
I found this interesting, as my experience loading. 357 Magnum and .44 Mag over the years, the diminishing accuracy and point of diminishing returns comes sharply as I worked up to near maximum or sometimes at say 3/4 the way up the ladder.........but this never really came in the 10mm ladders. Not sure if it has something to do with being semi-auto vs. revolver?? But in the 10mm...everything remained very consistent with accuracy and steady increases in velocity as maximums approached, with nothing becoming erratic or "spikey" in behavior. (Did I mention I don't like Blue Dot in 357 Mag!!!)

I kept some data, lost some data, and some I never chronoed them... and it got me wondering what is the FASTEST load for each of these 3 guns...
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I have 10 different loads I've worked up over the years, and 2 factory loads I have on hand to fire as call it a "measuring stick" just to see where they stack up.
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Going from left to right (all 180gr. weight)
All CCI LPP except #4 is WIN LPP
Each load has matching headstamps once fired brass, though headstamps vary between loads.

#1 - 9.3gr. Power Pistol - REM JHP OAL 1.250"
#2 - 14.0gr. AA #9. -WIN SXT-JHP OAL 1.2550"
#3 - 11.0 gr. Blue Dot - Hor. HAP OAL 1.2550"
#4 - 9.5 gr. Longshot - Zero JHP OAL 1.2580"
#5- 9.5 gr. Longshot- Hor. HAP OAL 1.2520"
#6- 11.0gr. Blue Dot - Hor XTP. OAL 1.2520"
#7- 8.7 gr. Power Pistol- REM JHP OAL 1.2500"
#8- 13.5gr. AA#9 - FED HST-JHP. OAL 1.2550"
#9 - 8.0GR Power Pistol- Berry's JHP OAL 1.250"
#10 - 14.0GR AA#9 - Armscor FMJ OAL 1.2580"

Factory Load #1 Magtech 180gr. JHP
Advertized Muz. Vel: 1,230fps. (Not pictured)

Factory Load #2 SIG 180gr. V-Crown JHP
Advertized Muz. Vel: 1,250fps. (Not pictured)

What im going to do is chronograph all 12 of these loads (10 handloads, 2 factory) through all 3 of my 10mms (CMMG Banshee, Glock 40 MOS, and Glock 20 with barrel lengths of 8", 6" and 4.6" respectively) (Glock 40 has Alpha Wolf barrel and Glock 20 has Lone Wolf barrel)by firing 5 rounds of each load through each gun. I'm curious as to what load will average the fastest in each gun. Will fastest in one gun be the fastest in another? Will AA#9 shine best in the longer barrel because it's the slowest powder? Will Power Pistol be best in the 4" barrel because it's the quickest burning powder? Or Will Longshot or Blue Dot just reign supreme in all of them?

As I said before, all of these loads were superb in accuracy from both the Glocks and Banshee...honestly I couldn't pick a winner unless I got a gun vise and did a series of testing... these all shoot better than I can.. these all put 1 ragged hole through paper at 10 yds fired off-hand, and the Banshee when shot from a rest at 30yds...same thing. One thing I can say for sure Is the 10mm is the most consistently accurate handgun round when pushed to the Max. Ive ever dealt with. I cannot say the same about 357 Magnum, 44 Magnum, or even 9mm or 45 ACP for that matter....maybe I just got lucky with the 10mm. Has anyone else notice this?? I've found the 10mm one of the easiest cartridges to load for, and consistently awesome results just about every time...granted these powder combos are arguably agreed on by many as "the best" for this caliber when maximum velocity is desired; I did take that into consideration when doing my homework on these loads over the years.

Will post results after a range trip in the very near future.
 
A few 10s, but yes need more!!!!!!:rofl::rofl::rofl:. Get a Mec-Tech for the Glock you'll not regret it! It loves the hot rounds and never fails me!
 

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I have always, and always loved the .45acp. 10 years ago I fell in love again but with the 10mm. Beginning with my:
Colt Delta Elite Gold Cup
IMG_0443.jpg

Next was my Smith & Wesson 1066
1066B.jpg

Then came my Springfield XDM 4.5
SAXDM10mm.jpg

and the most recent is my Springfield Armory Range Officer Elite Operator
SAROELOPERATOR_2.jpg
 
I have always, and always loved the .45acp. 10 years ago I fell in love again but with the 10mm. Beginning with my:
Colt Delta Elite Gold Cup
View attachment 1063524

Next was my Smith & Wesson 1066
View attachment 1063525

Then came my Springfield XDM 4.5
View attachment 1063526

and the most recent is my Springfield Armory Range Officer Elite Operator
View attachment 1063527
Those 1911 style guns loo good, but don't work well for me. I've been looking for (more like Maybe buying) a RI high cap 10mm. I would get a sig, but they're only 8 rounders. EAA in 10 is also on my list.
 
Those 1911 style guns loo good, but don't work well for me. I've been looking for (more like Maybe buying) a RI high cap 10mm. I would get a sig, but they're only 8 rounders. EAA in 10 is also on my list.
EAA 10 steel frame is Slick Like Snot. The rear sight are snag free. So racking the thing is HARD
 
If you are going to test all those loads wouldn't using the same bullet for all give a better indication of velocity and or accuracy?
 
UPDATE: Shot the lineup this afternoon. Had the range to myself so I was able to take my time, and was able to recover 99% of the brass to compare just for giggles. Had the chrono set at 5 yards with a target in alignment at 10 yds. 170 rounds I was able to keep inside the 6" ring I traced on the paper with a coffee can. Only 10 were just outside the ring and most of these occurred with the Glock 20 and 40MOS with the lightest load (load #9 with 8.0 of power pistol and the Berry's Bullets) I found this extremely interesting, I was expecting these to be the most accurate and controllable. They for sure had the lightest recoil..... but others did land outside the ring, I flinched a couple for sure.
20220303_145357.jpg
Wind was calm, temperature was 31 degrees farenheight. I had no malfunctions in any of the 3 guns fired and all 180 rounds registered in the chrono with no faults. This was surprising, I was expecting 2 or 3...... 20220303_150823.jpg It's a bit tough to keep a tight tight group when shooting 3 different guns with 12 different loads, but at least 90% of the rounds went through one ragged hole the size of my fist...this was about what I was expecting. I will admit I was fatigued a bit, all this shooting over a 2 hour period, recording the data by pencil and paper every shot...but I got it done, and it was fun. Time to crunch some numbers, ill update that tonight....And me grouping slightly left of center...been doing it for years, it's my thing. Maybe I'll bump my rear sights to the right a bit.
 
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UPDATE: Shot the lineup this afternoon. Had the range to myself so I was able to take my time, and was able to recover 99% of the brass to compare just for giggles. Had the chrono set at 5 yards with a target in alignment at 10 yds. 170 rounds I was able to keep inside the 6" ring I traced on the paper with a coffee can. Only 10 were just outside the ring and most of these occurred with the Glock 20 and 40MOS with the lightest load (load #9 with 8.0 of power pistol and the Berry's Bullets) I found this extremely interesting, I was expecting these to be the most accurate and controllable. They for sure had the lightest recoil..... but others did land outside the ring, I flinched a couple for sure.
View attachment 1063582
Wind was calm, temperature was 31 degrees farenheight. I had no malfunctions in any of the 3 guns fired and all 180 rounds registered in the chrono with no faults. This was surprising, I was expecting 2 or 3......View attachment 1063585 It's a bit tough to keep a tight tight group when shooting 3 different guns with 12 different loads, but at least 90% of the rounds went through one ragged hole the size of my fist...this was about what I was expecting. I will admit I was fatigued a bit, all this shooting over a 2 hour period, recording the data by pencil and paper every shot...but I got it done, and it was fun. Time to crunch some numbers, ill update that tonight....And me grouping slightly left of center...been doing it for years, it's my thing. Maybe I'll bump my rear sights to the right a bit.
I couldn’t shoot that good with a Shotgun with Extra Full choke
 
What I discovered when shooting a lot of rounds at 1 target is that you loose your center reference point, (BE). With it gone the groups open up.
Yup, the first few tracked left, then the ragged hole left of center became my hold point which I'd center in the V of the chrono every shot.
 
20220303_170445.jpg
One observation is, the primers were slightly flatter in the Glock 40 MOS (middle pic) than in the Glock 20 (Top Pic) but by only a very little bit. Which the Glock 20 had virtually no flattening at all. The Banshee had the most flattening by a Longshot (no pun intended) (pictured bottom)
I'm not positive that this indicates a greater PSI pressure build up, but it could. Design of the gun can play a role in this, and other factors than just straight up CUP/PSI. Ain't no telling for sure. Primer reading has been proven to be junk science, but I still look at them with a grain of salt.

The Glock brass are all in excellent shape thanks to the Aftermarket Lone wolf (20) and Alpha Wolf (40) barrels which offer better chamber support than do the factory glock barrels.... there will be no "smiles" involved and these will all be reloaded again with a standard Dillon factory Resize die. No roll size/Push through required with these great barrels, even with maximum loads. Well worth the 100$ or so price tag for the extra chamber support and ability to shoot raw lead. Supposedly this can come at the cost of cycling relibility, but if you keep your ammo to spec, reliability is typically never a problem...

Data on the way shortly....
 
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