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Old 06-09-2012, 11:38   #1
bearwolf
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10mm Speer GDHP loads

All I'm new to the glock and 10mm scene. I've reloaded for about 25yrs and am currently working up loads for my new g20sf with kkm barrel. So far I've assembled the following;

165gr gdhp ~1.255OAL

14.5 - 15.5gr of accurate #9 (also my first time using this powder)

CCI300 primers and new starline brass.

I basically went by speers load book on the 165, but don't have any info using their 155 and 180gr gold dot hp's.

Does anyone have some good powder ranges for the 155 and 180 per Speer manual?

I will basically be using the 155 and 165 for self defense and carry. The 180 will most likely be my hog and deer loads.

I'm not really looking for the super duper knock a train off the track load that toasts the brass after 1-2 rds.

Bear
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Old 06-09-2012, 12:38   #2
TDC20
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Bear, welcome to the 10mm Reloading forum, and welcome to 10mm!

I have only loaded the 180 GD's with AA#9 powder. This is my rural carry load. 14.0gr AA#9, new Starline brass, WLP, and 1.255" OAL. This averages 1245fps from a stock G20 barrel with a 22# Wolff spring, which for a 180gr Gold Dot is actually past the optimum expansion velocity according to others here who have tested them as such. The 180's tend to expand best in the 1150 - 1200 fps max. range, and over-expand when pushed faster. So, keep that in mind. They claim the GD 155's and 165's can be driven faster than the 180's with good expansion performance, so take that for what it's worth.

The WLP's are a little hotter than the CCI#300's, so keep that in mind when comparing loads and velocities.

Here's some more data from my AA#9 loads with 180gr bullets that you might find helpful (all with stock G20 barrel and 22# spring):
13.0gr. AA#9, Rem 2.5, 180XTP, 1.250", 85F, 1F Starline, 1158fps avg.
13.5gr. AA#9, Rem 2.5, 180XTP, 1.250", 85F, 1F Starline, 1210fps avg.
13.5gr. AA#9, WLP, Win. 180FMJ, 1.250", 49F, 1F Federal, 1146fps avg.
13.5gr. AA#9, CCI#350, Win. 180FMJ, 1.250", 49F, 1F Federal, 1170fps avg.

Hope you find that useful. Good luck and be safe!
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Old 06-09-2012, 14:15   #3
bearwolf
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Thanks for the info on the 180's. I ended up making a few test loads at 12.2gr, 12.8, 13.0, and 13.4 seated to approx 1.252" OAL. Hopefully 13.0 will do what I want as I seem to like 1 gr loads. 13.0 for 180 and 15.0 for 165, maybe it'll end up that way.

I've only shot 50rds of 180gr xtp loaded with win WLR and hp38 powder through my new g20. Didn't notice much difference in recoil than my hot loaded 45acp. But I suspect those hp38 loads were fairly anemic target loads.
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Old 06-09-2012, 20:37   #4
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Welcome bearwolf.

I have not loaded 155 GDHPs with #9, but I have loaded 155 XTPs. Working up to a charge of 16.0 grains with a CCI 350 mag primer, Starline brass, COL 1.25" yielded 1415 fps out of my G20 with stock barrel. I have loaded up to 15.5 with mag primers with a 165 GDHP with zero issues, so the 16.0 grain max would reasonably track with the 155. I don't think that velocities above 1350 fps are beneficial for Gold Dots, so driving beyond that might not be practical.

Of course, please reduce and work up in 0.2 grain increments.

I have loaded 155 XTPs with standard CCI LP primers to see how they compare with mag primers. The plan is to test them tomorrow. I'll post the results as I get them.

Accurate used to separately list load data for 180 gr GDHP. This can be found in Loadbooks. The max was 14.5 grains of Accurate no. 9. They called for a CCI 300 primer for that. The max for 180 gr XTPs is 13.5. In their current published data, they have dropped some of the loads, including the GDHP, and are going with the more conservative max charge.
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Old 06-10-2012, 10:57   #5
attrapereves
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My carry load is 165gr Speer GDHP. For me, 15.2gr of AA#9 travels at around 1335fps out of a Glock 29. In the wax tests, these bullets seem to blow apart at velocities higher than 1350fps, so I load them a little under max.
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Old 06-11-2012, 00:39   #6
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Originally Posted by attrapereves View Post
My carry load is 165gr Speer GDHP. For me, 15.2gr of AA#9 travels at around 1335fps out of a Glock 29. In the wax tests, these bullets seem to blow apart at velocities higher than 1350fps, so I load them a little under max.
I posted a test of that identical bullet and velocity over at the 10 Ring. You might find it interesting. This is my carry bullet load too.

http://www.glocktalk.com/forums/show....php?t=1426627
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Old 06-11-2012, 16:59   #7
bearwolf
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I couldn't resist and fired off one of my 165gr test loads today with 14.5gr of aa#9. There's sure a big difference between the gold dots and the xtp's that I've always shot in my other pistols in regards to not taking much to expand fully and coming apart other than the round chunk of lead. The g20's must really toss the brass as I couldn't find it within a 20ft circle from where I shot. I'm thinking 14.8gr might be as high as I want to go so as to reduce bullet fragmentation. Next up will be to try the 180gr and see what it does expansion wise as you never know when a wild hog will appear. Maybe I shoulda got a box of 180gr xtp and max them out for four legged critters.
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Old 06-11-2012, 17:27   #8
10mmau
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Taterhead

Did you get a chance to do the primer comparison with the 155 XTP?
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Old 06-11-2012, 18:30   #9
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Taterhead

Did you get a chance to do the primer comparison with the 155 XTP?
I think you are referring to the comparison between the CCI 350 vs. CCI 300 primer with A9 powder. If so, then yes. I should be able to post results later this evening. Look for it in the Accurate sticky.
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Old 06-11-2012, 18:33   #10
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Originally Posted by bearwolf View Post
I couldn't resist and fired off one of my 165gr test loads today with 14.5gr of aa#9. There's sure a big difference between the gold dots and the xtp's that I've always shot in my other pistols in regards to not taking much to expand fully and coming apart other than the round chunk of lead. The g20's must really toss the brass as I couldn't find it within a 20ft circle from where I shot. I'm thinking 14.8gr might be as high as I want to go so as to reduce bullet fragmentation. Next up will be to try the 180gr and see what it does expansion wise as you never know when a wild hog will appear. Maybe I shoulda got a box of 180gr xtp and max them out for four legged critters.
Yes, the big 20 tosses brass. I was collecting brass 10 yards away yesterday. I tried a 22# spring, but that did not seem to help much if at all. I like to put down a big tarp and stand in the right spot.

180 Gold Dots are pretty flimsy. I would be more inclined to go with a 180 or 200 gr XTP for animals.
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Old 06-12-2012, 15:59   #11
bearwolf
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Interesting to know. I guess I will load the 180 gdhp a little low so it doesn't arrive in pieces. I was hoping of getting to 15gr aa9 on the 165's but don't know looking at bullet fragments at 14.5. Time will tell.

My next buy will be 180gr xtp's.

Last edited by bearwolf; 06-12-2012 at 16:10..
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Old 06-12-2012, 20:42   #12
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Originally Posted by bearwolf View Post
Interesting to know. I guess I will load the 180 gdhp a little low so it doesn't arrive in pieces. I was hoping of getting to 15gr aa9 on the 165's but don't know looking at bullet fragments at 14.5. Time will tell.

My next buy will be 180gr xtp's.
I settled on 15.2 grains from my G20 for the 165 GDHPs. They seem to hold together at that velocity (1335) in the various media that I have shot them at. Of course, there are no certainties with any bullet - as you have discovered.

You can't go wrong with 180 XTP. The do-it-all bullet. You will probably find, like I have, that they group very well accross a variety of different loads.
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Old 06-13-2012, 21:08   #13
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Originally Posted by Taterhead View Post

180 Gold Dots are pretty flimsy. I would be more inclined to go with a 180 or 200 gr XTP for animals.
I was surprised to find this out too, just the other day. Seems like the 165gr Gold Dot holds up better.

I haven't loaded any Gold Dots in the 10mm, but recently acquired a Keltec Sub2000 carbine in 40 S&W, and found the ballistics out of that 16" barrel with 40 S&W ammo are almost identical to top loads from my 10mm G20 longslide. 160gr cast HP's at 1650 fps with 40 S&W book loads seemed impressive to me!

Anyway, I had some Speer 180gr Gold Dots, from when they were sold in 50 round boxes, so I fired one of those through water jugs to see what it would do. No denim or anything, so not real scientific. The shot read 1250 fps (approx, can't remember exactly), and the bullet stopped in the 3rd jug. It definitely over-expanded, with the petals folding back around the base, some lead tearing off the petals, and some petals breaking off.
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