Better to reload: 10 mm or .45 acp?

[Ron3]

Need a 10 mm or .45 to pop large primers with.

Would probably end up with a Glock 29 or G30 gen 4. Not looking to load to max. Just mild, medium, and warm.

Seems like there is plenty of data and bullets for both.

Both pretty easy to find on the ground, (my own) both unfortunately available with small primers, too, so I need to be carefull what I buy or pick up.

Both were about $15 / 50 in 2019 IIRC.

[gunnerblue]

Deleted. Misunderstood question

[markm]

Brass in both calibers come in both small and large primers. 45 is always easier to get pick up brass, but both make great reload candidates.

[turnburglar]

I'd pick 10mm just because of its flexibility. You can load them from 40 SW pressure to full power 10 mm loads. 45 cant be loaded as spicy because its an older lower pressure round. Unless you got a mk23. That gun was made for 45 +p.

[md66948]

If you buy a glock and reload you will have to contend with the glock bulge. I would spend a little more and get something other then a glock that does not have an open chamber like a glock. Just my $0.02.

[Ron3]

If you buy a glock and reload you will have to contend with the glock bulge. I would spend a little more and get something other then a glock that does not have an open chamber like a glock. Just my $0.02.

My understanding is the whole line that could be tightened-up was chamber-wise. Especially the .40's and .45's around 2009.

Also, if mildly loaded I wouldn't expect excessive swelling/bulges.

But even loaded fairly hot, like Underwood does, doesn't necessarily mean bulging. I never had any from Underwood ammo in a 10mm G20sf I used to have. Nor in Underwood .45 scp from a Colt 1991a1 or S&W M&P .45 g2 full-size.

No problems in .357 sig either from a G32 (Underwood) but know those chambers have always been fully supported.

[wil]

If you buy a glock and reload you will have to contend with the glock bulge. I would spend a little more and get something other then a glock that does not have an open chamber like a glock. Just my $0.02.

what is glock bulge? Open chamber?

[Ron3]

For my purposes 10mm or .45 doesn't matter much it seems.

Range, possible HD, possible CC, possible cut for a optic. I'd use 200 gr bullets in .45 and 180 gr in 10mm. No plans to load any of it "hot". The 10mm holds one more round in the shortest mag and two more in a full-size mag. Not enough to matter to me.

I had a tough decision to make as 10mm brass just came in stock at Starline AND I found a new G30 gen 4.

So, because I already have some .45 acp I've got the G30 on the way.

What really got me on this is enjoying firing my G39 (.45 gap) and having a supply of large pistol primers. (.45 gap uses small)

I'd rather reload the .45 gap actually. (Short li'l 200 gr fatties!)

Thanks for the advice.

(Now watch the G30/G29 Gen 5 drop in 3, 2, 1...)

[markm]

what is glock bulge? Open chamber?

Unsupported chamber. I think my old G22 gets the guppy bulge in the brass. If your sizing die is decent, it's not an issue. And I do believe, as posted, it's an older glock characteristic.

[Uni-Vibe]

All else equal, load for .45.

With Glock, you don't have standard rifling. Leading can be a problem. 45 goes 850 fps. 10mm goes 1300 fps. Guess which is more likely to lead the bore.

I run hardcast just fine in G21 45 ACP. I run hardcast just fine in XDM 10mm with polished bore of standard rifling. And XDM is a very strong gun with fully supported chamberr.

Disregard if you plan on loading jacketed bullets.