9mm loads for the short chamber guys?

[ShortBus]

I know this has been covered but I can't find it anywhere.

Im currently using titegroup and 125 bluebullets and looking for a good starting point for a tanfo that likes it short.

[MemphisMechanic]

This could help. Obviously start with a plunk & spin in your barrel, and go from there to tune your OAL to the bullet and chamber you're developing loads with.

Edited July 25, 2016 by MemphisMechanic

[ruleyoutoo1911]

I had to go to 1.060 using 125 gr RN Bear Creeks with a CZ75. Short bullet and short chamber.

[e4effort]

This could help. Obviously start with a plunk & spin in your barrel, and go from there to tune your OAL to the bullet and chamber you're developing loads with.

Thank you for the data! This is very helpful and wish more people would lay it out down like you.

[MemphisMechanic]

Thank you for the data! This is very helpful and wish more people would lay it out down like you.

You mean you don't want me to just tell you "3.5 titegroup shoots soft" without giving you an OAL or even a bullet weight? ... let alone giving you barrel length and the temperature at the time? Shocking.

Edited July 25, 2016 by MemphisMechanic

[ShortBus]

Awesome list but not much titegroup or 125's lol

[rooster]

I installed a Barstow barrel in my g34, it has a short chamber. I had to shorten my pd 124 jhp's to 1.100, if I run mg jhp's they have to be about 1.085. What I tried and so far has worked, but do so at your own risk. Take the minimum charge for your specific load and divide it by the oal, then multiply that by your desired oal, then chrono and look for over pressure signs. For example n320 is 3.6 min, 4.1 max. at 1.140. 3.6 ~ 1.140 = 3.15, 3.15 x 1.080 = 3.4 grains. You are now at the same ratio as the longer length, but you stil used up case volume that's why you start at the minimum grains. I'm running my pd jhp at 1.100 at 3.7 grains of n320.

[MemphisMechanic]

Awesome list but not much titegroup or 125's lol

If you can't find data for titegroup in 9mm, you officially need remedial training in using the search tool. <grins>

I loaded with it initially, but I used the same data as everyone else. Everyone loads with titegroup.

[v1911]

Just finished chrono'ing a short chamber load for a friend.

3.4gr TG, 124gr Acme, 1073 fps, OAL 1.117.

3.6gr = 1115fps

[ShortBus]

Awesome list but not much titegroup or 125's lol

If you can't find data for titegroup in 9mm, you officially need remedial training in using the search tool. <grins>

I loaded with it initially, but I used the same data as everyone else. Everyone loads with titegroup.

Everyone seems to use titegroup but not with 125 blue's with short chambers. I've always disregarded information regarding load data when they use a different bullet because idk if the profile is the same and the data will cross over.

I'm trying to take a short cut, which I know is not the best way to do it. I'm trying to get a load together for a new gun that will work, as in function the gun, be safe, and somewhere between 125 to 137 power factor. I plan to work up multiple loads and do some testing and chrono'ing. I am short on time and want to shoot this gun. I won't have the time to work up a proper load till next week and I need to shoot this sexy beast this week.

[Jollymon32]

Xtreme 124 RN, 3.8gr VV N320, 1.09 OAL, Median:1008fps Std Dev:14.69 Avg:1005fps PF:125.67

[ShortBus]

It's not always about length man.

[ShortBus]

If it helps I'm loading 3.6 grains to 1.115 now for my 320.

Is there a equation you can use to shorten the OAL and find the right powder charge? I know there is a lot of stuff at work when compressing the OAL so forgive me if that is a stupid question.

[rooster]

see post 7, that is a formula. In your load books they usually give a min. and a max load. Use the formula in post 7. If you don't have a min load to start and using some given load use the steps described and maybe drop it a couple of tenths chrono and check for signs of over pressure.

[ShortBus]

see post 7, that is a formula. In your load books they usually give a min. and a max load. Use the formula in post 7. If you don't have a min load to start and using some given load use the steps described and maybe drop it a couple of tenths chrono and check for signs of over pressure.

Man, sometimes reading is hard. Thank you for pointing this out!

[fishsticks]

If it helps I'm loading 3.6 grains to 1.115 now for my 320.

Is there a equation you can use to shorten the OAL and find the right powder charge? I know there is a lot of stuff at work when compressing the OAL so forgive me if that is a stupid question.

Have you tried to plunk test that in the barrel you're working the load up for? It should be close.

No matter what the plunk test is where to start. Once you have that coming up with the load of TG should be pretty straightforward as there is tons of data on this site for 124/125 gr coated and TG. Many of the folks using CZs are in the same boat.

As an example I've used SNS, Leatherhead and other 124/125 gr at 1.1" and ~3.7 gr TG. The exact charge needs to be determined with a chrono. You may also find better accuracy somewhere greater than min PF as well.

[LilTMoney]

I am using CFE at 5.2gr for montana gold 124gr hollow point. 1.108 in length. Shot today and had really good accuracy. I am playing with major loads now for the same length. Will post results.

[hcore44]

I just started to get into the 9 Major/open class shooting and found that I have a very short OAL allowed by my threaded barrel. I first sent it to Beven per suggestions here but he had to send it back because the coating on the barrel was too hard for him to be able to ream. I already ordered another barrel but didn't know if it was still possible to loud major level with 124 MGs that could only be loaded out to 1.09ish. I am not testing out at this point because I am too new to the higher pressure loadings but I am curious if others have played around with this.

[Fred63]

hcore44,

I've just gone thru this myself with a short chambered Czechmate, most projectiles were down around 1.10 and I believed pressure would be high at major pf, was advised by everyone to ream but in Australia not so easy.

I found Berrys 124gr plated could be loaded to 1.155 and with 6.9gr WAC and Fed srp gives me 172 pf with very little evidence of pressure.

I've read poor reports of Berrys plated but they seem to go OK for my skill level (2.5-3.0in at 25yards) so I'd advise your best course if you can't ream is to try as many different projectile profiles as you can particularly long overall round nose.

[kneelingatlas]

First off, what are you working with? A 2011? Glock? What type of rifling? What brand barrel?

Are you're 124MGs JHP? What powder are you loading.

115RN will probably load the longest for you. It can be done

[Steve RA]

Load a dummy round that will fit comfortably in your magazine, send or take it and the barrel to your favorite gunsmith and have the barrel reamed to fit the dummy round. Then you can load to any length you like that will fit in the magazines.

Edited August 8, 2016 by Steve RA

[hcore44]

Im shooting a glock 17. The first barrel that could not be reamed was a PSA threaded. My lone wolf threaded should be here tomorrow. I first attempted loads with MG 124gr HPs over 6.7 WAC at 1.10 OAL. I had two blown primers (popped out) and the brass looked bulged out of 15 rounds.

I loaded some dummy rounds with SNS 125gr round nose (with lube groove) and I was able to load out to 1.14 with no problem (plunk spin test) but I wasnt sure if the coating would hold up at those velocities and mess with my comp.

I have loaded 10's of thousands of 9mm in my shooting career but never in this pressure/power range so I am moving with caution

[kneelingatlas]

First off, in my experience 115s produce less chamber pressure at the same PF than 124s, also, slower powders will help with pressure as well (try HS6 or 3N38). I know there are plenty of Open shooters using coated bullets, but I recommend MG CMJs or double plated Xtremes.

[Fred63]

1.14 may well be usable, work up a ladder from 6.2gr to 6.8gr WAC if that's what you want to try,use Fed SPP or other soft primers ,chrono and inspect primers and cases along the way.

[hcore44]

This sport drives me nuts sometimes. I received my new lone wolf barrel in the mail today and it would not let me chamber a 124gr MG HP longer than 1.11 and the side walls were also very tight. Rounds that easily pass the plunk/spin test in my factory barrel get wedged tight in this chamber as well but not as tight/short as the PSA barrel. Im sending it off to Beven to ream it tomorrow.