10mm Auto and Blue Dot ?

[Greg Y]

I've worn out a few 10mms and doing so I learned that blue dot flashes too much for me. Longshot goes over pressure quickly. Aa9 is the ticket.

 

[Alaska Bush Man]

Yes you are correct I don’t think BD has a flash additive
Longshot and BE-86 and Major Pistol both have it and are excellet for top vel loads in 10mm

 

[Mike6158]

I just loaded and tested 9.0 gr and 9,6 gr of Blue Dot with the 200 gr cast bullets from Straight Shooters that you recommended Alaska Bush Man. I'm almost at sea level in TX and it was 75 degrees when I tested them. My LabRadar didn't pick up the first shot of either group. User error I guess.
I usually load for rifle and not much for pistol other than bulk on the Dillon XL650. Which means I'm not going to be happy with the ES no matter what lol

I loaded these one at time. 9.0 gr load was, to me, all over the place

9.0 gr loads - 1053, 1085, 1079, 1035
9.6 gr loads - 1100, 1111, 1118, 1088

Just for grins I checked some 180gr FMJ FN CCI Blazers
1083, 1135, 1090, 1125

I loaded some at 10gr earlier but I haven't used the LabRadar in a few years and I completely botched it. No data. I don't think the step up to 10 is going to give me a linear increase in velocity. The 10gr charges that I loaded were pretty stout. No flat primers but lots more recoil. My curiosity will get to me and I'll end up testing the 10gr load and getting a velocity.

 

[Alaska Bush Man]

With BD max was 10.7 with 200gr
My best results were at 10.0 to 10.3 recommended with 200gr. I settled with 10.0.

With 220gr HC it was 9.5 to 9.7 of BD.
I settled with 9.5 .

I found a tad better accuracy just under max and easier on the frame in G20.

 

[Alaska Bush Man]

I just loaded and tested 9.0 gr and 9,6 gr of Blue Dot with the 200 gr cast bullets from Straight Shooters that you recommended Alaska Bush Man. I'm almost at sea level in TX and it was 75 degrees when I tested them. My LabRadar didn't pick up the first shot of either group. User error I guess.
I usually load for rifle and not much for pistol other than bulk on the Dillon XL650. Which means I'm not going to be happy with the ES no matter what lol

I loaded these one at time. 9.0 gr load was, to me, all over the place

9.0 gr loads - 1053, 1085, 1079, 1035
9.6 gr loads - 1100, 1111, 1118, 1088

Just for grins I checked some 180gr FMJ FN CCI Blazers
1083, 1135, 1090, 1125

I loaded some at 10gr earlier but I haven't used the LabRadar in a few years and I completely botched it. No data. I don't think the step up to 10 is going to give me a linear increase in velocity. The 10gr charges that I loaded were pretty stout. No flat primers but lots more recoil. My curiosity will get to me and I'll end up testing the 10gr load and getting a velocity.

Do you crimp using a Lee Factory Crimp Die.
I use the 220gr HC and 9.5 of BD
But if you use the 200gr HC suggest 10.0 of BD.
Still not a max load but accuracy should be better.
Are you using CCI 300 primers ?
Jealous at 75 deg it’s still 5 deg here for high
BD will perform best close to max loads.
These Hard Cast bullets for deer aim at the shoulder blade for best results .

 

[Hohn]

I have heard good things of Longshot and BE-86 in the 10mm with heavy bullets as well as Major pistol.
I have a very small amount of 800x left which was my first powder I used in the 10mm with 200 XTP 30 years ago when the g20 was introduced. I am stuck on BD for now. I am happy anywhere between 1100 and 1200 fps with 220gr Hardcast in my G20.

I’m a huge fan of BE86. It’s a great powder, just perhaps a bit fast for maximum speed in 10mm with heavies. With lighter bullets, I”m sure it can get the speed. But it should get you 1050-1100 with 220s.

 

[Alaska Bush Man]

I’m a huge fan of BE86. It’s a great powder, just perhaps a bit fast for maximum speed in 10mm with heavies. With lighter bullets, I”m sure it can get the speed. But it should get you 1050-1100 with 220s.

With Those 220gr coated hard cast without a Gas Check they are running about 213/214 grains same with factory Underwood’s Coated 220’s. I expect the 200s will be the same a tad lighter without the GC.

 

[Hohn]

EDIT: “IF” I picked up 10mm again, I’ve been wanting to try some VV powder. Especially some N105.

 

[Alaska Bush Man]

I’ve I picked up 10mm again, I’ve been wanting to try some VV powder. Especially some N105.

Hohn
What pistol are you using ?

 

[Hohn]

Hohn
What pistol are you using ?

NO longer have my G20SF… Looking hard at a G40 because long slide 10mm are awesome.

 

[Alaska Bush Man]

NO longer have my G20SF… Looking hard at a G40 because long slide 10mm are awesome.

Good choice suggest if you plan on using full power loads get a NDZ 22 Pound spring and Rod kit and a KKM barrel . N105 is hard to find.
N105 @ 12.0 with 180 XTP makes a great load

 

[Alaska Bush Man]

This Service Man got this Brown bear on Ft Richardson while bow hunting moose. He arrowed a moose late went back the next morning and the Brown Bear was on his moose. So the Service Man won the fight with a G20. It was self defense kill and had to be given to Fish and Game. Needless to say the G20 is very popular in Alaska.
I still have a 629 SW 4” depends which side of the bed I get out on depends which pistol I carry. But I like that 15 round capacity of the G20 in bear country.

 

[Mike6158]

Do you crimp using a Lee Factory Crimp Die.
I use the 220gr HC and 9.5 of BD
But if you use the 200gr HC suggest 10.0 of BD.
Still not a max load but accuracy should be better.
Are you using CCI 300 primers ?
Jealous at 75 deg it’s still 5 deg here for high
BD will perform best close to max loads.
These Hard Cast bullets for deer aim at the shoulder blade for best results .

I used the seater/crimping Redding die. Back the die off of the shell holder 2 turns. Seat all of the bullets. Back the seater off. Screw the die down to the shell holder and crimp. I'm using a Forster single stage press. The primers are CCI 350 (magnum). If I have CCI 300's I couldn't find them. I didn't look very hard either. Supposedly I can seat and crimp at the same time but I wasn't loading very many rounds so I just took my time and did it that way. I've got a Dillon XL650 but it's easier to load 10-20 with a single stage press.

75 will be 95 and high humidity before too long. I'll take that over 5 deg

You read my mind. I'd like to try them on deer. The company I work for has holdings all the way up to the slope. I don't think I'll ever get to travel there for work but I wouldn't decline if the opportunity came up. I need to practice some but deer season is a good bit of time away so there's time.

 

[Alaska Bush Man]

I suggest Large pistol primers especially since you don’t have gas checks. Magnum primers often are too hot for the lead bottom of a Hard cast. You will also see a spike in pressure from Mag primers in 10mm. But you should find your load at 10.0 of BD with 200gr either Hard cast or XTP. Remember with those Hardcast you will get excellent penetration often 100% on deer with very little expansion so a shoulder blade would be a excellent target for deer or Bear. I have used the Lee Factory Crimp Die for many years makes a excellent crimp and centers the bullet.
Spent 11 years working the slope in Security. Denali Universal Security works the slope in Security they need help starting wage 50 to 60k yr.
Interested let me know for more details .

 

[Alaska Bush Man]

At what weight bullet do you feel the need to replace the recoil spring?

For full power 10mm loads I suggest a 22 to 24 pound spring. NDZ stainless rod and spring kit as good low cost option. It will save your polymer lower frame from punishment has nothing to do with bullet weight in Glock 20.

 

[Cecil S.]

For full power 10mm loads I suggest a 22 to 24 pound spring. NDZ stainless rod and spring kit as good low cost option. It will save your polymer lower frame from punishment has nothing to do with bullet weight in Glock 20.

Thanks

 

[Mike6158]

I suggest Large pistol primers especially since you don’t have gas checks. Magnum primers often are too hot for the lead bottom of a Hard cast. You will also see a spike in pressure from Mag primers in 10mm. But you should find your load at 10.0 of BD with 200gr either Hard cast or XTP. Remember with those Hardcast you will get excellent penetration often 100% on deer with very little expansion so a shoulder blade would be a excellent target for deer or Bear. I have used the Lee Factory Crimp Die for many years makes a excellent crimp and centers the bullet.
Spent 11 years working the slope in Security. Denali Universal Security works the slope in Security they need help starting wage 50 to 60k yr.
Interested let me know for more details .

This thread came back to life just in time. I just primed 50 cases with CCI 300's and I was debating one what charge to use with the same bullet. I'll go 10gr of BD again. Apparently I bought some CCI 300's after reading this thread. The mag primer comment makes perfect sense. I started loading my 7mm Rem Mag with CCI Large Rifle primers and I got my 100 yard groups down to 1/4" from 1.5". There was other tweaking but velocity settled down to an ES of 4 with one of the loads. Nothing against mag primers. There's a time and place

 

[Rsadams]

This thread came back to life just in time. I just primed 50 cases with CCI 300's and I was debating one what charge to use with the same bullet. I'll go 10gr of BD again. Apparently I bought some CCI 300's after reading this thread. The mag primer comment makes perfect sense. I started loading my 7mm Rem Mag with CCI Large Rifle primers and I got my 100 yard groups down to 1/4" from 1.5". There was other tweaking but velocity settled down to an ES of 4 with one of the loads. Nothing against mag primers. There's a time and place

I use BD and 180xtp and after testing I have gotten it up to 1230ish I find a cheap plated bullet at 1150-1160 to be a good hard hitting plinking round...

But my reason for responding to you is to say I tried every kind of powder dispenser I own lee , rcbs , Dillon etc and they all hated BD enough that I was getting crazy over throws sometimes as much as 4 tenths.... That's way to much when you start getting close to a max power load so I went with a charge master link even the trickle up method was to slow for me.... Using it and double checking weights with an rcbs and sometimes a Dillon digital scale just to make sure everything is good.... I highly suggest one... Just make sure to wipe it down with a dryer sheet before using it ( charge master ).... It really helps with any drift etc... Once you work up your hunting/self defense load you can back it down to punch paper... I know and understand buying something like that is a little expensive but to me it was sooo worth it.... Loading 10mm to me is way different than say 9mm , I treat it more like rifle in my loading method , safety first with such a powerful round is important...

 

[Mike6158]

I use BD and 180xtp and after testing I have gotten it up to 1230ish I find a cheap plated bullet at 1150-1160 to be a good hard hitting plinking round...

But my reason for responding to you is to say I tried every kind of powder dispenser I own lee , rcbs , Dillon etc and they all hated BD enough that I was getting crazy over throws sometimes as much as 4 tenths.... That's way to much when you start getting close to a max power load so I went with a charge master link even the trickle up method was to slow for me.... Using it and double checking weights with an rcbs and sometimes a Dillon digital scale just to make sure everything is good.... I highly suggest one... Just make sure to wipe it down with a dryer sheet before using it ( charge master ).... It really helps with any drift etc... Once you work up your hunting/self defense load you can back it down to punch paper... I know and understand buying something like that is a little expensive but to me it was sooo worth it.... Loading 10mm to me is way different than say 9mm , I treat it more like rifle in my loading method , safety first with such a powerful round is important...

I use my older Chargemaster and then dump that into a TRX-925 scale. I got into the habit of checking my Chargemaster drops when I started down the long range shooting rabbit hole where a tenth matters. As good as it is the Chargemaster can often read dead on and be off buy a few tenths. I have to correct the drop more often than not. For pistol round that too much error for me. I have a Dillon XL650 and it's hard for me to trust the powder measure system now. If I'm loading close to max I don't use it. It's mostly a brass prep machine now.

 

[Alaska Bush Man]

I have found the Max at 10.5 with 200 XTP and CCI 300 in Starline using BD very accurate in my G20. Now I am working up a load of Longshot using a 220gr (214g) Hardcast coated load.