10mm heavies

[CWLONGSHOT]

Anyone loading the 10mm with 220 G bullets?

All my 10mm molds are 145-200 grains. A buddy found GT Bullets on line and wanting to test HP bullets he ordered some And sent to me for coating. Our deal it I get to keep some of what ever I want when coating. I grabbed some 165 & 185 360 dia. he shot them from 800-1500 fps into wet magazines. Inside 50 yards. Magic number was 1200 for all Of them. I tested hardness and they average about 12bhn
i bought myself some 185/35’s as cast. (Another nice thing offered) and 220/40’s. My thinking is hunting and that 1200 fos. Its right where the 357 mag will be from My 8” bbl & in my Glocks with 6” I think thats about as fast as I could get from a 220g.

BUT I dont find any data. So I have been cautiously loading Blue Dot. I also like 800X but that powder can flip FAST and you be over. BD can too, just in my experience its not as u expected. But 800x is a better velocity powder.
Anyhow... I started with 7g I shot 8.3 last night.
Seven just past 1000 fps. And 8.3 just past 1125. Measured case heads, primer flow into striker as well as velocity and feel shooting says Im still just fine. I loaded 8.4 & 8.5g last night.
Now my 200g load was past 10 before I saw pressures and I stopped and backed off a tad at about 1300 fps. thats a nice load with a WFN GC 200g. (Conventionally lubed as I dont have this mold)

As always, any insite and comments welcome.
CW

 

[Hawk]

I'm loadind a 190 gr., powder coated, cup point Miha mold with Blue Dot.
Exellent velocity and accuracy, just an unbelievable flash bloom on ignition.

 

[CZ93X62]

Lots of 10mm time here. 200 grains is as heavy as I have gone, and 1200 FPS with that weight was a hard limit for me. This was in S&W 1006-series pistols. Blue Dot, AA-7, and AA-9 figure highly in this work.

A constant diet of the "200 grains @ 1200 FPS" is what broke the 1911A1-based receivers. You'll note that most factory ammo tops out at 1125-1150 FPS with a 180 grain JHP of some kind. Here, the ammomakers used an abundance of caution--lowering both bullet weight and velocity from "The Norma Level" to assure the longevity of the Colt/1911 frames. Winchester is a bit more intrepid--their Silvertip 175 grainer runs at 1250-1275 FPS. I think the STHP is about as hard a load as I would run in any Colt-based design, and it is as high as I go in my Glocks.

The 10mm suffers from a niche dysfunction and an identity crisis--its detractors claim it is no better or more powerful than a 357 Magnum, its enthusiasts claim it is a magazine-fed 41 Magnum. Both camps are mistaken. It is a mid-point between those two mileposts. I love the caliber, and would have carried it on duty if my stick-in-the-mud agency had allowed it. But I know what it is--and what it isn't. I also know what it was meant to do--to be a balance between bullet diameter, bullet weight, and bullet velocity that could be managed by a seasoned shooter in a full-sized 1911-series (or similar) platform. In that role, it can do very well.

If I was to try 220 grain bullets in a 10mm, I would start them at 950-1000 FPS and likely top out at the 1100 FPS level. The recoil differential between 180 grain bullets and 200 grain bullets run at similar intensities greatly favor the lighter of the two bullets; I would imagine the 220s exacerbate that outcome, much like factory 30-06 ammo has for me--150 grain, 180 grain, and 220 grain loads at similar pressures give markedly different recoil results.

 

[CWLONGSHOT]

Recoil is very objective. I in NO WAY feel these are heavy recoiling. Maybe try a 45/70 Contender with 400’s at top velocity. They dont kick back as much as they try to “unscrew” your hands at the wrist... I chuckle every time I read that folks think the 40 is “snappy”. I shot/ shoot big revolvers in 45 regularly and for years. I remember teaching my wife to shoot. She had zero experience. I was an instructor and she would join me as my customers became more and more female and couples. Having another woman in class and on the range was a kinder environment for the women trecking into an other wise “boys” world. Anyhow. One day she was shooting beside the students just keeping busy and talking with other people on the range. She came and asked for more 44 ammo. She was shooting one of her favorites a SBH 7” 43 magnum with specials. Well she didnt take specials she took full house 240g jackets loads. THE ONLY THING she complained about was shooters elbow from the bench... NO ONE TOLD HER recoil was something to fear its merely something to learn and overcome.

I agree 100% on 1911 framed guns and rarely even shoot my two Deltas.

My load for the 200WFN GC is a but faster than you mention. But Im also shooting them in a 6” barrel. My 200g Lyman TC shoots very well at 1100 but its small meplat is made for feeding not game.

i do not need the 10 to be a do everything caliber. I also have 41Magnum as well as 45’s and its magnum varieties. But I need it to be what it was intended not its watered down alter ego. I have various 40’s that are better at that.
I have had and been loading the 10mm since it came out and I bought a Blued Delta Elite with a DE 13XX SN. I realize we dont know each others experience levels, but know Im not new to this.

CW

 

[fiver]

357... 41 mag... no it's the 38-40 just straightened out and pressured up.

 

[david s]

I'm very new to the 10mm game and only have a single mould for it so far. I haven't yet cast with the NOE 200 grain WFN but I purchased it with the 200/1200 combo in mind. I've never owned a Glock but when looking at the 10mm I really wanted to like it. The Glock does have a much better reputation for longevity than the 1911. I tried the standard frame and the slim framed 10mm Glocks and purchased a Kimber 1911. This hasn't gone perfectly either though, failure to feed and unexpected slide lock issues. A trip back to Kimber (on there dime) and they did a nice job of correcting the feeding problem, they almost got the unannounced slide lock engagement fixed also. I attacked the slide stop with a Dremel to put a small detent dent in it for the plunger and now I'm learning to begin to trust it. About this time my source of linotype retired from the restaurant place mat/custom map business. So now I'm hoarding my limited supply until I find another. I dont know if this pistol will ever replace my S&W 625, 629 or 657 Mountain Guns but it will replace a 329. The 329 is to much fun for me. It has been an accurate cartridge for me so far though. If my future hand loads duplicate the accuracy I've been getting I'll be happy. CWLONGSHOT I once fired a heavily loaded Contender in 45-70 that was wearing a nylon sling. My face still stings where that strap hit me and that was more than 30 years ago.

 

[CWLONGSHOT]

Im not comfortable pushing the 10mm in the 1911 platform. I have seen a few destroyed with 180/1200fps diets.
Mine is a Glock. Its poly frame softens perceived recoil and absorbs some shock. Its less costly and shoots every bit as accurate with a KKM barrel.
I have two Colts I hardly shoot anymore. They are beautiful guns that I do not want to harm. The Glock is replaceable.
CW

 

[CZ93X62]

That is my view as well, CW. You need to try out my Glock 29SF--it is ONE FUN RIDE with the STHPs or their duplicators. The Pearce little-finger-hook baseplates are a Godsend.

I have tentatives tried out the Lee 175 grain TC bullet (conventional lube groove) sized at .401" and lubed with Carnauba Red in both a Glock 23 (40 S&W) and the Glock 20SF. No leading resulted, and no mushroom clouds were produced. I still may go the aftermarket barrel route, though castings seem to do the same good work in the hex-lobed 40 and 10 that castings did in the octo-lobed 45 ACP barrels. The 10mm will also be getting some R&D with the Barnes Condor Cuddlers (all-copper) in order to keep the pistols hunting in CA.

 

[CWLONGSHOT]

My 29 is winter carry. YES the pierce finger extensions are on point!


CW

 

[CWLONGSHOT]

Just back from the range and Im happy. My velocity is 1150 @ 8.5g BD. I need better sites. These while steel, are simply too coarse for long range shooting. But if Im careful I can manage 5-6” 50 hard groups. Off sand bags being real careful I can almost half that.
CW

 

[freebullet]

Nice work. I have a small quantity of mixed stamp 10mm brass. No 10mm though. I should give them away before I find myself buying a 10mm. If anyone has a shortage & wants it let me know & I'll dig them out.

 

[CWLONGSHOT]

I added a Vortex VENOM last night...

i wansnt gonna donit cause I spect allot on a Double Diamond Holster and it will not work with a dot...
I expect a improvement in accuracy!!

cW

 

[CWLONGSHOT]

I GOT THE IMPROVEMENT!!
10 shots @ 25 Yards off hand. 220gHP @ 1150


Here is three individual shots @ 50 Yards off hand.
Top center is my 200G WFN GC @ 1200 fps
Top left hole is the 220g HP @ 1150 fps
Bottom is my 170 Cup point @ 1345 fps


CW

 

[CWLONGSHOT]

I ran thru this first batch last week.
As I have found a good load I like to have a few hundred loaded and on hand. I ordered up somemore. GT bullets sells “as cast” and is a few hardnesses.
They arrived today and looked great! Usually in a box but these came just rolled up tightly in a USPS MAILER.



Git the oven on and bullets in the baskets to warm on top. 40 minutes later I dumped the first basket into the powder. In about 20-30 seconds they where perfectly coated... As the rain started to fall here.


Dump them into my sifter basket.


Ready for the oven!
This is my own mix. SPLASH PURPLE from Powder by the pound and some Gloss white then some sparkles I’m trying.


Outta the oven into a cold water bath then out to dry.
After dinner I’ll size them and be ready to load more!
CW

 

[CWLONGSHOT]

I never updated this one...

I started low and kept increasing 2-1/10 at a time. Stoping at pressure or target velocity. This one was 1050 from the G29. Hit that with BDot. Good accuracy too.

Im comparison, my 200g load produces 1260 in 6" KKM. AND 1080 in G29.
I also updated that Venom with a Swamp Fox KingSlayer.


CW

 

[fiver]

couple of changes and that'd almost pass for a 1911.
what's that thingy on the back of the slide?

 

[CWLONGSHOT]

Its a replacement for the factory FP stop on the back of the slide. But with small "ears" allowing a but more slide "purchase"

Not needed with a reflex site as that provides more then enough. But I try not to use the site for anything but seein thru.

CW

 

[Intel6]

I like that sight. I am curious about how rugged they are and how does it handle the 10mm recoil?

 

[CWLONGSHOT]

Thank you!

Well, I dont see why it wouldnt. Its a quality company. But time will tell the tale.

 

[robertbank]

Here is my relatively new 4.2" GP-100 in 10MM. I have not had a full summer to play with this one yet but have had good success with 200 gr plated and 170 gr lead bullets. I intend to pick up am Accurate 180 gr GB mold and run them in both 10MM and 40Cal cases using PB gas cheks to reduce leading. Ranch Products now makes .040" thick moon clips that work well with the 40 cal cases. I got to many light strikes using .032" thick moon clips that are made for the 10MM cases. The thinner clips do their job with 10MM cases but I found them to thin when I switched to usint 40cal cases.

So far the Ruger has performed well. I am not convinced I gained much when I acquired the 10MM over the 357mag in the same model but it does give me the option to shoot another Division in IDPA.

I see S&W has expanded their 10MM fleet with the addition of two models of the M&P pistol.
Care

Bob