pondering new 10mm load; 10mm fans step inside

[m657]

The factory new 180 FMJ rounds I got really were not very impressive grouping out of the Sig 220-10.

I tried a variety of 165 plated Berrys and had a paucity of recipes. They sent me some ideas & I honed in on a load that seems about right for bowling pins:

Haven't chronoed it yet but all other indicators PLUS careful study of the data they suggested, gives me hope this recipe is suitable: *NOTE* disclaimer & any use/etc is NOT advised/suggested/even talked about....

Thinking 165/~1100fps/Universal Clays.

Gives pleasant reliable 2.5" group from the bench at 30'.....about pin table distance.

 

[bigggbbruce]

I like to push 180gr ~1100 with 800x.. laser guided off hand shooting 3" clays on the 25 yard berm.

 

[m657]

nice BBB!!!

I don't use the 800x on hand as it doesn't meter well in my Dillon. Do you find much difference in 180 vs 165 for accuracy in general at the shorter range velocities?

I've tried hard to adapt to the projected laser-dot advantages; what happens despite repeated training attempts, is I get distracted and lose my groups. I have managed to adapt to the advantages of the red-dot sight though.

 

[colt_saa]

For pins I always preferred a heavier projectile. My go to load was the Winchester 230 JHPs over 7.8 grains of PP for about 950 FPS depending on if I was shooting the revolver or the autoloader.

That took first place, years ago, out of a bone stock SIG P220 here in South Florida.

For 10MM Auto cartridge, I would probably load the 200 grain Hornady HAP over the same 7.8 grains of PP for about 1150 FPS

 

[reddog81]

Not that it matters but 165 going 1100 is more like a hot .40 S&W round than a 10mm. One of my favorite loads is a home cast 180 grain over 6.2 grains unique. It's right at the max load for a .40 and a min load for 10mm. It's accurate and you can shoot 100 rounds without beating up your wrist.

 

[much ado]

10 mm loading

One of my favorite loads is 6.7 Unique with 180 Sierra JHC. Chronos at 1067 fps.

 

[bigggbbruce]

I've tried hard to adapt to the projected laser-dot advantages;

My meaning was not that I use a laser but that I level on target and pull the trigger the clay explodes. I plink out to 100 yards and 180gr flies flat to target.

All my 10mm loads are 180 or 200 anymore. No reason to not shoot 165 much, just that the heavy weights work fine for me.

 

[m657]

appreciate the recipes, will be trying more as the 3rd & 4th week of my 10mm shakedown cruise continues.

I was simply disappointed in the 180 factory lack of accuracy over nearly 300 rounds/several range trips & heavy sandbagging at close in target....as in 'minute of cantaloupe'. Not good enough.

The 1100 I've tried to maintain both as a general referent point, and because Berrys says to stay below 1250 with these plated 165s.

Will be looking for some heavier cast lead for sure.

 

[colt_saa]

What is your crimp like on your handloads?

Plated bullets do not like a heavy crimp. With a plated bullet you should just be removing the bell of the case mouth, perhaps a tiny taper crimp, but not much more.

Also speed up that 165 a bit. The twist of that barrel might not like the lighter projectile moving that slow. Shoot for 1200 FPS and see if you get an improvement in accuracy

What "Factory" brand of ammunition were you using?

appreciate the recipes, will be trying more as the 3rd & 4th week of my 10mm shakedown cruise continues.

I was simply disappointed in the 180 factory lack of accuracy over nearly 300 rounds/several range trips & heavy sandbagging at close in target....as in 'minute of cantaloupe'. Not good enough.

The 1100 I've tried to maintain both as a general referent point, and because Berrys says to stay below 1250 with these plated 165s.

Will be looking for some heavier cast lead for sure.

 

[fredj338]

I'm a longshot fan for 10mm full power loads. Running a 165gr @ 1250fos is pretty easy, 1350fps is still safe. Imo, where the 10mm shines is heavier bullets running faster. Again, longshot or aa#9 easily runs the 180-200gr to 1200fps. I gave up on 800x, accuracy wasnt great & it has to be hand weighed.
My 195gr lfp pin bullets if i used a 10mm.

 

[m657]

re: crimp: just barely using bit

re: " longshot or aa#9" I just never see this on the local shelves.

I favor cast lead in revolvers & will be trying some heavier 10mm soon.

Appreciate the tips.

So far the best groups I've got with 165 plated Berrys, is a cluster of 6 inside 1x2 grid that was just a touch L @ 30'.....I adjusted the rear sight & got my 6 in a nice 'minute of plum' group. However at the pin match I managed to be slow enough to lose.

Field trials go onward with some new recipes listed above.
For some reason the only AA stuff I see around my local shelves is the rifle stuff, 12-15-etc, never the listed pistol powders. I did load up a bunch of Autocomp, but haven't found any 10mm loads yet for it.

Did find some Bulls Eye & 231 recipes that looked possible with 165.

 

[RGPM1A]

I think for bowling pins a 165 grain bullet going 1100 fps will not have a high enough power factor. For pins IMHO you need at least a 215 PF - your load will be about 182. To get 215 you will need a velocity of about 1300fps - higher than recommended by the mfg.

I always use 200 grain Hornady XTPs going at 1100 fps using AA 9. It will sweep the pins right off the table.

 

[M16]

I'm using a healthy dose of Blue Dot pushing a Hornady 180 grain XTP at 1300 fps out a six inch barrel STI Perfect 10.

 

[fredj338]

I think for bowling pins a 165 grain bullet going 1100 fps will not have a high enough power factor. For pins IMHO you need at least a 215 PF - your load will be about 182. To get 215 you will need a velocity of about 1300fps - higher than recommended by the mfg.

I always use 200 grain Hornady XTPs going at 1100 fps using AA 9. It will sweep the pins right off the table.

Bullet shape is as important as PF with pins IMO. I do fine with 45acp & 200gr LFP @ 850fps, 170PF. The wide FP smacks them really hard. A 40/165gr FP will get it done, but @ 1100fps, that is 40 s&w vel.

 

[m657]

Today I got some sample powder coated 180 cast LFP for more trial loads. Should be good for 1300+ velocity with no issues from the coating.

Searched the shelves, found only one slightly used container of AA15 in the various LGS.

However I do have this at hand:

Universal Clays
WST
WSF
Titegroup
H110
HS6
N320
700x
800x
Accurate LT-32
Bullseye
Clays
AutoComp
HP38
Trail Boss
the Holy Black Goex
Pyrodex

There should be something Mikey likes there......

 

[akjaeger]

I'm using Longshot and the 180 XTP, very accurate and a little over 1300 fps in my STI Perfect 10.

 

[m657]

"180 XTP, very accurate" that's good to know, I will add them to the list to try out.

I haven't loaded any of this style bullet as of yet.

 

[fltbed]

I'm using a healthy dose of Blue Dot pushing a Hornady 180 grain XTP at 1300 fps out a six inch barrel STI Perfect 10.

Another Blue Dot fan here.

In my testing, I've found 10.4 gr of Blue Dot behind almost any decent 180 gr bullet to be "the" accuracy load in all three of my 10's. Only chronos in the 1180 f.p.s. range but out shoots every other powder I've tested.

For more info on the 10, check out the 10mm firearms forum. plenty of info on load data, guns, builds, even factory ammo pull downs.

 

[Groo01]

Groo here
AA7 and AA9 work well
Ps. watch trying to go too heavy in a 10mm. [ or most others]
Try for what ever load that will give you 1100 to 1200 fps.
220 gr are border line too heavy for field work. [pins are close
so they will work for that]

 

[Bob R]

I have used Blue Dot and Power Pistol both under a 180gr XTP with very good results out of a Delta Elite. I run them @ 1250 fps or there abouts. Hornady makes a match bullet, the HAP which is the XTP without the expansion cuts. A little bit cheaper than the XTPs, I am going to get some and give them a try.

bob