10mm bullet weight

[SpeedyR]

I reload 40 on a rare occasion and in the past have always used 165gr bullets. I have been considering getting a mold to cast/powder coat bullets for the 40 just for the fun of it. BUT recently a friend asked me to hold on to a 10mm pistol for a bit while he is overseas. While he's gone I thought it might be fun to develop a good load for his pistol. I would normally look around and get some 180gr bullets for the 10mm but since I'd like to kill two birds with one stone, how does the 10mm do with lighter/165gr bullets? I would just be shooting paper with it, so no need for SD or hunting rounds for the 10mm.

I was looking at this mold from MP molds. Cast 176gr solid bullets, or 165gr with the large HP pins. I was thinking this might work, cast the 176gr for the 10mm, cast the 165hp for subsonic use in my 40 shorty. MP also makes a 190/180gr mold that is similar (190gr solids, 180gr hp) but was thinking that the 180's might be heavy for the 40?

402-165 TC HP Mold (Multi Choice) - No lube groove - MP-molds

Best moulds for casting lead bullets. Hollow point, hollow base or solid bullets. Molds are Brass or aluminum. The best money can buy.

www.mp-molds.com

Other than this, anyone have any recommended powders for 10mm 175gr loads that might be on the lighter side? Pistol is a Colt Delta Elite if that matters.

 

[BHPSteel]

I don't own or load for 10mm but I have a book that tells me how to!

Looking at the Lyman 51 Ed., they have recipes from 135gr up to 200gr, so you're well inside the weight range.

Lyman has recipes for 175gr #2 Alloy which are very similar to the ones at https://hodgdonreloading.com/rldc/.

Lyman seems to be very specific about loads depending on the case manufacturer, whether Norma or Starline,

* indicates Norma
** indicates Starline

The recipe at Hodgdon seems to be a bit spicier than the loads offered in the Lyman 51 above.

As always - use these recipes at your peril and build your ladders based on starting loads, etc.

 

[SpeedyR]

I’ve got quite a few reloading books but thought I’d ask for those that have shot the 10mm if the 165’s are decent enough or just buy a box of heavier for the 10.

 

[MuleShoe]

The 165 grain are accurate and will do well in 10mm. I use Winchester 231 powder and federal primers. I’ve shot a lot of them through a 1006 Smith.

 

[basstracker89]

I haven't shot 10mm. But the same basic fundamentals cross over. If you're just paper punching, the tighter groups will be with a lighter slower bullet. But if you're going slower velocity, might as well go with the 40. Obviously different for hunting or longer range shooting. I do like W/W 231 and W/W primers

 

[SpeedyR]

I plan to keep shooting my 40 and having a 165gr hp bullet that I can shoot subsonic (if I can find a threaded barrel for my G22) is the goal. I've wanted a 10mm for a while and this might push me towards a FN510 after I get a load set up for my friends Colt. 22 rounds of 10mm with optics and fully ambidextrous would be fun. But I already have the FNX45 and 15 rounds of 45 is a good package as well.

 

[basstracker89]

I plan to keep shooting my 40 and having a 165gr hp bullet that I can shoot subsonic (if I can find a threaded barrel for my G22) is the goal. I've wanted a 10mm for a while and this might push me towards a FN510 after I get a load set up for my friends Colt. 22 rounds of 10mm with optics and fully ambidextrous would be fun. But I already have the FNX45 and 15 rounds of 45 is a good package as well.

Shooting subsonic, a heavier bullet is your friend. Your limited to velocity but not bullet weight. So a heavier bullet will put more energy and penetration into your target.

 

[owen58]

I load 165s for my G40. My purpose when developing the load was basically the opposite of yours. So, I shoot JHPs at over 1400fps.

 

[CorvZ061]

I load 165s for my G40. My purpose when developing the load was basically the opposite of yours. So, I shoot JHPs at over 1400fps.

That sounds fun. My 200’s I load the most average 1210. I’ve got some 180’s that I’ve been playing with but 165’s could be fun. Which powder are you using?

 

[owen58]

That sounds fun. My 200’s I load the most average 1210. I’ve got some 180’s that I’ve been playing with but 165’s could be fun. Which powder are you using?

I've been using Accurate #9. Honestly, the recoil is very manageable, the accuracy is good and there are no pressure signs whatsoever. When I get more time to work on it, I'm planning to continue pushing the velocity.