WTK: Pet Loads and Bullets for 10mm

[Dane R. Marley]

I just aquired over 1200 10mm once fired cases. I have a CMMG 10mm Bancshee that I want to start reloading for. I am interested in coated cast bullets and jacketed bullets. What are some of your favorite load combinations? My barrel is 8"

I will also be loading some 40 S&W for my S&W Shorty Forty Pistol. I do have several thousand S&W Once fired Cases that I aquired over the years but never reloaded.

I am also buying a Mighty Armory FL sizing die, & expander. I plan to use a Lee crimp die. I have yet to deside what seating die I am going with..

 

[BW460]

It's great that you are getting into reloading. Unfortunately with the limited amount of supplies on hand right now, it does make it difficult. You didn't say what powder, bullet, bullet weight, etc. you have on hand. However, there are no shortcuts in reloading. This can be hard for newcomers to understand, but EVERY gun is different. What works fantastically in my gun, literally might make yours blow up. I'm not exaggerating with that statement. Hodgden has a lot of load data on line, Alliant posts maximum loads, Nosler has some data on line, and Accurate / Western has a book you can download. But, you really need to buy some books. Hornady and Lyman have good books. Stay away from Lee's book. Lee did not develop those loads and many are too hot. You have to do the load development for your gun. Start out about 10% below maximum and work up. I stop when I get an accurate load that is below maximum charge. Take this advice and you will have fun with this new hobby and you will get to keep all ten fingers!

Now, some specifics, my experience with 10mm is that No. 9, Power Pistol, and CFE Pistol are some of the best powders. The two most popular bullet weights are 180 grains and 200 grains. You may or may not need magnum primers with No. 9. Be aware that magnum primers can increase the pressure levels.

If you do copy a load you get from someone on the Internet, please first make sure it is within published values. This is true for both ends of the scale. A squib load that blocks your barrel is just as bad as an over pressure load that blows it up.

Enjoy your new hobby and keep asking questions. Remember, there are no dumb questions, but there are people who only have 3 fingers now.

 

[BW460]

One more thing, when developing a load for testing, never load mare than 5 to 10 rounds to test. If you think you got a tip on a great load and you load 100 rounds to go try, your next purchase will probably be a kinetic bullet puller.

 

[Jonny2guns]

One more thing, when developing a load for testing, never load mare than 5 to 10 rounds to test. If you think you got a tip on a great load and you load 100 rounds to go try, your next purchase will probably be a kinetic bullet puller.

Cam lock puller is a lot faster..... don't ask me why or how I know.

 

[BW460]

Oh, we all tend to learn the hard way. I graduated from a kinetic puller to a Forester collet puller!

 

[CarJunkieLS1]

For 10mm I really like Accurate No 9. Its the only powder I've tried but I'm not changing. My reloads using a 180gr Nosler JHP are very very accurate at 25 yards. 13.4gr A#9 180 Nosler JHP Starline Brass and a Winchester LPP clock over 1500fps from my 10.5 inch barrel in my AR pistol. That same load is a touch over 1300fps from my 6" barrel Glock 40. That is my daily do-all bullet and load.

My other go to is the Hornady 200gr XTP but I haven't really messed with it too much but A#9 is the powder I'll use for it too.

 

[mokin]

With an eight inch barrel you have lots of choices. I have found that plated bullets seem to tumble at lower velocities than advertised. Like others have said, start low and work your way up.

 

[Herman B]

AA#9 and Longshot are my preferred powders for 180/200 gr coated and jacketed, always by the book. Lighter bullets may shine with different powders. 10 is a wonderfully versatile cartridge, from light to heavy, loafing 40-range to screaming! Screamers will diminish brass life. Enjoy.

Depending on load and chamber, case-bulging may arise. Redding G-Rx die may be helpful. Read-up on bulges to be able to ID before having a greater problem involving a puller - collet for me.

Also see 10mm-firearms.com for a raft of info, incl pulldowns, from devotees. glocktalk.com has tons of good info.

What works fantastically in my gun, literally might make yours blow up.

Why staying within book-loads is important.

 

[Dane R. Marley]

It's great that you are getting into reloading. Unfortunately with the limited amount of supplies on hand right now, it does make it difficult. You didn't say what powder, bullet, bullet weight, etc. you have on hand. However, there are no shortcuts in reloading. This can be hard for newcomers to understand, but EVERY gun is different. What works fantastically in my gun, literally might make yours blow up. I'm not exaggerating with that statement. Hodgden has a lot of load data on line, Alliant posts maximum loads, Nosler has some data on line, and Accurate / Western has a book you can download. But, you really need to buy some books. Hornady and Lyman have good books. Stay away from Lee's book. Lee did not develop those loads and many are too hot. You have to do the load development for your gun. Start out about 10% below maximum and work up. I stop when I get an accurate load that is below maximum charge. Take this advice and you will have fun with this new hobby and you will get to keep all ten fingers!

Now, some specifics, my experience with 10mm is that No. 9, Power Pistol, and CFE Pistol are some of the best powders. The two most popular bullet weights are 180 grains and 200 grains. You may or may not need magnum primers with No. 9. Be aware that magnum primers can increase the pressure levels.

If you do copy a load you get from someone on the Internet, please first make sure it is within published values. This is true for both ends of the scale. A squib load that blocks your barrel is just as bad as an over pressure load that blows it up.

Enjoy your new hobby and keep asking questions. Remember, there are no dumb questions, but there are people who only have 3 fingers now.

Thanks BW460 for the advice. I am sitting on a lot of 40 cal bullets of different weights, Cast & FMJ, and several k of large pistol primers. Several years ago I bought out an estate of a reloader. I kept what I shoot and reload and sold off what I didn't use or reload. I really have't desided on my powders yet, thats why I posted in here for some advice. I have about 20 lbs of powder for my rifles and 4lbs of red dot left over from my shot shell loading days. I use the Red Dot for 45 acp & 45 LC. I may have some Auto Comp and H110 sitting around.

By the way I am 69 and I started at 10 years old sorting brass for my neighbor. He taught me how to reload and by time I was 12 I was reloading 30-06 from start to finish and shooting it in my hunting rifle and M1 Garands. I currently reload 30-06, 308, 223, 45 acp, 45 lc, 9mm, 38/357, 44 mag, 300 BO, and 50 AE. 40/10mm will be my next adventure in the world of reloading.

 

[TEXASJD]

I have been running blue dot under 200g cast but running low but just got 5lbs of AA#9 from powder valley so I will be changing up.

 

[BW460]

I have a couple CMMG PCC's. One in 9mm and one in 45acp. I love them. If you check with CMMG, they will yell you not to shoot cast in those guns, only fmj. The CMMG PCC's will take some hot loads but you will probably need to add weight to the buffer if you do that.

 

[WestKentucky]

I didn’t load 10mm for very long but it really liked aa7 and 180gr truncated cones from Berrys. That setup did the trick on a decent 8pt buck.

 

[Lennyjoe]

BE-86, Blue Dot, Longshot and 800X (but is discontinued) are great powders for 10MM. I use 180’s and 200 gr XTP bullets for mine. Also trying out some Zero 180 s shortly.

 

[brutus51]

The 40 Super (10mm to all sillymeter fans) is one of my favorites. AA#7 and AA#9 are two of my favorite powders for it.
Back when I got started reloading for it Hornady listed AA#9 for their 180gr. XTP at 11.5gr. starting load@950fps and 14.4gr. max load@1200fps.
They used a Colt Delta Elite 5" barrel. Oddly enough a recently acquired Western powder handloading guide lists a max of 13.5 grains.
At any rate I carefully worked up to 13.8gr. which was supposed to deliver 1150fps. for their 180gr. XTP.
This load proved to be very accurate in my 5" Kimber Target II and yielded an honest 1250fps.
Figured there was no reason to push it further. Don't shoot a lot of them but it's my woods packin round.

 

[Fatelvis]

I use 8.4grns BE-86 under a 180 XTP loaded to 1.25”. 1312fps average from my 6” Kimber Longslide. Clean, powerful and accurate.

 

[brutus51]

Been having such good luck with VV-N105 in my 38 Supers I'm going to try it in 40 Super
Think I'm going to try 10,2 gr. under a 180gr XTP for starters.
I love this hobby.

 

[sparkyv]

Blue Dot is my favorite 10mm powder, but I shoot them only in my handguns. AA#9 and Longshot also work great. I load up 165, 180, 195 and 200 grainers.


+1

Also see 10mm-firearms.com for a raft of info, incl pulldowns, from devotees