Jump to content
Brian Enos's Forums... Maku mozo!
RippSpeed

Recently got some Hodgdon LongShot

Recommended Posts

I'm looking for a start recipe for Hodgdon LongShot aka LOUD Shot !!! for a 115gr or 125jhp 9mm Major bullet ... 4 port comp, no pop holes, 5.4" barrel, 5" open gun ...

Edited by RippSpeed

Share this post


Link to post
Share on other sites

HA!

(Don't worry all. I know him well.)

Edited by yoshidaex

Share this post


Link to post
Share on other sites

Try 7.5 and work up. It's been quite a while since I've used loudshot, but I just looked at my old records and I ended at 8.2 with a 115 mg jhp at 1.235

Share this post


Link to post
Share on other sites

Try 7.5 and work up. It's been quite a while since I've used loudshot, but I just looked at my old records and I ended at 8.2 with a 115 mg jhp at 1.235

What kind of FPS did you see? Been doing the max load from there website and felt snappy but 8.2 is a ton lol, its this a full case @ 8.2gn?

Share this post


Link to post
Share on other sites

Grump, is that 9mm or SC? I'm at 1480 with a MG 115 JHP on top of 8.2 with 1.225 OAL in SC. Two popple holes.

Work up slowly with Longshot. It will reach a max speed and then as you add more powder the speed will actually fall off. When it did this in SC for me I had no pressure signs at all which made me...... nervous. Your ES will jump up when you are at the point of diminishing return as well.

Share this post


Link to post
Share on other sites

Sorry, should have said. That was 38 super. Like I said, it's been years since I used it...I went to n105 and never looked back.

Share this post


Link to post
Share on other sites

Sorry, should have said. That was 38 super. Like I said, it's been years since I used it...I went to n105 and never looked back.

Oohh ok looking for 9mm loads... just need a starting point.

Share this post


Link to post
Share on other sites

Work up slowly with Longshot. It will reach a max speed and then as you add more powder the speed will actually fall off. When it did this in SC for me I had no pressure signs at all which made me...... nervous. Your ES will jump up when you are at the point of diminishing return as well.

I saw this as well with longshot. Another member pointed out that this powder shows to be very slow on the burn rate chart and once you reach a certain point no more powder can be physically burned in a pistol length barrel, and all that you will get is more flash and unburned powder out the barrel. I'm not certain that it is really that dangerous once you get to that level but work up slowly just in case.

That being said I really like longshot, when I had my 9 major gun I was running 7.4 grains with a 124 and now use 7.7 grains with a 124 in my 38 super gun. The only problem is both of those are shorty open guns and the plateau area is only about 168-169 PF on both of those guns/ loads and is a little close to minor to use at major matches for me.

Share this post


Link to post
Share on other sites

Yes, I am just at 170,max speed with 115s. Would prefer another 5 PF.

Share this post


Link to post
Share on other sites

anyone else ???

The 125 JHp I'm loading can only be loaded as long as 1.190 ... Anyone else have a good starting point for me ???

Share this post


Link to post
Share on other sites

Range update:

175PF w/ 7.6grs of LongShot, 1.170oal, a

Remington 6 1/2 primer and 125jhp Montana Gold ...

Happy camper it meters great and is alot cleaner than HS6.

I loaded 5 rds each from 7grs to 8.2grs.

I started seeing prime flow at 8grs...

It was weird though at heres my range date for u guys to read thru

7.2grs 125JHP 1.170oal

hi = 1361

lo = 1348

avg= 1354

pf 169.25

7.4grs 125jhp

hi = 1366

lo = 1346

avg= 1358

pf = 169.75

7.6grs 125jhp

hi = 1416

lo = 1383

avg= 1402

pf = 175.25

7.8grs 125jhp

hi = 1375

lo = 1359

avg= 1365

pf = 170.62

8grs 125jhp

hi = 1396

lo = 1378

avg= 1386

pf = 173.25

I stopped there becaude of primer flow

Share this post


Link to post
Share on other sites

That's some odd data. The power factor dropping after 7.6 is expected with this powder but I've never seen it start to go back up after dropping off like you have. Definitely need to run more than 5 round. That one abnormally high round in the 7.6 batch may be messing with you average.

Share this post


Link to post
Share on other sites

That's some odd data. The power factor dropping after 7.6 is expected with this powder but I've never seen it start to go back up after dropping off like you have. Definitely need to run more than 5 round. That one abnormally high round in the 7.6 batch may be messing with you average.

Very true ... but I chrono the way they would chrono me at any big match ... mis matched brass and only 3 to 5 rounds ... But of course I'm going to doubel verify before heading to Area 2 next weekend and will post my results again ...

Share this post


Link to post
Share on other sites

That's some odd data.

I chrono the way they would chrono me at any big match ... only 3 to 5 rounds

I fire at least 20 rounds thru the chrono, and make sure that ALL of them make PF ... :cheers:

Share this post


Link to post
Share on other sites

The most important data from your chronograph is the Standard Deviation (STD) and you didn't include that. Bottom line is trying to use 3 rounds to measure your average velocity is extremely difficult (because of the huge statistical uncertainty using only 3 samples). I've done the statistical analysis and highly recommend using the following method. You should use 8 rounds (that's all you need) to measure your velocity and STD. Use these measurements as follows. My guidance is to add 2 to 2.5 times your standard deviation to the required velocity to make PF. This gives you your load velocity. This method will give you a high certainty of meeting PF (on the order of 90 to 95% certainty).

For a 155 grain bullet, an average velocity of at least 1065 ft/sec is needed to meet major power factor. Lets say your typical measured standard deviation for this load is 15 fps. Simply add 30 ft/sec (2*STD=2*15) which results in an average load velocity of 1065+30 = 1095 ft/sec. Again,measure it with 8 rounds. Note that you still need to account for big factors that affect velocity such as ammo temperature, barrel temp and cleanliness but this is the best way to ensure you meet power factor.

I hope this helps!

Share this post


Link to post
Share on other sites

will reload and rechrono my 7.6grs on monday ... will repost and post complete information

Share this post


Link to post
Share on other sites

I can show you why its only a matter of time (or rather chance) before you fail to meet power factor following the rule book procedure.

Share this post


Link to post
Share on other sites

Heres range results

1=1387

2=1419

3=1357

4=1380

5=1380

6=1381

7=1396

8=1404

9=1384

10=1412

HI=1419 = PF = 177.37

LO=1357 = PF = 169.62

AVG=1390= PF =173.75

ES=62

SD=18

weather:

74 degrees

sunny

chrono shot under shade

Load :

1.170 oal

125jhp 357 sig 0.355 diameter

remington 6 1/2 small rifle primer

7.6grs of LONGSHOT

This is mixed once fired brass ...

Edited by RippSpeed

Share this post


Link to post
Share on other sites

So for a 165 PF the min velocity is 1320 fps. If you add 2 to 2.5 times your STD it gives you a desired load velocity of 1356 to 1365. Personally I find that 170 or slightly above is a sweet spot but there is nothing wrong with a few extra PF points. I know some people that recommend up to 175. Once you know how your powder behaves at worse case temperatures you could reduce the velocity if you want. If you can’t tell a difference in perceived recoil and it shoots accurately then I say you have a winner!

I usually warm up the gun with a mag or two before I chrono and I chrono at least twice to make sure the STD is consistent (within a few fps or so). 8 rounds is all you need since 2 and 2.5 were calculated based on 8 samples. FYI - my STD for my comp load is usually about 12 to 16 fps. I load in 200 to 500 rnd batches and I chrono it about every 1000 round or so.

Share this post


Link to post
Share on other sites

got back from Area 2 yesterday ...

and I made major .. and the load runs super soft and flat ... will be posting a vid for a sample ...

and heres my chrono results are Area 2

15756685241_a8bb0e7f5a_c.jpg

Share this post


Link to post
Share on other sites

Cool! Sounds like you've got a good load! And best of all you don't have to worry about failing PF if you follow the 2*STD guide and measure the STD with 8 rounds.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...