Reloading reciepe for 8MM Ordnance using GR 100 grain RN bullet?

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FARMHANDYO

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Hi everyone,

I have been reloading 8mm Ordnance for a few years now. However I always used the Jet Bullets lead 8mm Ordnance bullet and had no issues. It looks like Jet is now out of business so I had to switch to this nice copper plated bullet:

https://x-reload.com/bullet-330-100g-tmj-rn-8mm-lebel-rev-p-100.html

The loading that I was always comfortable with previously was 2.8 grains of Trail Boss behind that lead bullet. However I used the same amount of trail boss behind these copper plated bullets and I immediately encountered a squib load and it was very under powered. I have looked all over the internet for somebody that has had success using these bullets in 8mm Ordnance revolvers but I cannot find anything.

So today I want to ask do any of you have a recipe that works for you when using these bullets?

Components that I use:
- Hornady 8mm Ordnance Die Set
- Cut down 32/20 cases and sometimes genuine 8mm Ordnance cases
- Any small pistol primer, type does not seem to matter
 
gewehr76 said:
3.5 to 4.0 gr is good charge for these bullets. They are too light for this cartridge so more powder is needed. My revolver likes 120 gr lead bullet with 3 gr of tightgroup at 1.420"
These not so much.
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Thanks for the response. What lead bullets do you use? I hope that someone responds that has used these bullets before successfully as they are very nice bullets.
 
FARMHANDYO said:
Thanks for the response. What lead bullets do you use? I hope that someone responds that has used these bullets before successfully as they are very nice bullets.
Click to expand...

Your welcome, I used these bullets, that's why I responded to your thread. They will fly out with charge mentioned above and not get stuck in the bore, however they will hit where ever as they are seem too light for this cartridge. You need to figure out where to aim with them. My revolver is not really accurate with these bullets. They need to be 120-130 grain in weight to be stable and sight compatible.

I get my led bullets from friend at the club, he casts them in small batches when he has time so no I have no steady supply. Heavier longer body bullets is what works best in the 8mm French ordnance. Not 100 gr
 
gewehr76 said:
Your welcome, I used these bullets, that's why I responded to your thread. They will fly out with charge mentioned above and not get stuck in the bore, however they will hit where ever as they are seem too light for this cartridge. You need to figure out where to aim with them. My revolver is not really accurate with these bullets. They need to be 120-130 grain in weight to be stable and sight compatible.

I get my led bullets from friend at the club, he casts them in small batches when he has time so no I have no steady supply. Heavier longer body bullets is what works best in the 8mm French ordnance. Not 100 gr
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Well that is kind of sad. I bought 1000 of those bullets. It is for plinking anyways. So how did you find Trailboss at 3.5 grains compared to 4 grains? I wonder if my revolver would stabilize the projectile better as the rifling is very good in it.
 
Fill your case with Trailboss to were the base of your bullet will be then weigh it. You may not be able to get 4 gr. in it. Trailboss should not be compressed as the little donuts get crushed which drastically changes it's burn rate. The 100gr bullets you have may work just fine. Generally were you run into trouble with bullets being unstable is when they are too heavy (long) for the rifling twist rate. There is some variation in bore diameter in those 1892 revolvers, it's possible those plated bullets are a bit tight in yours. I would slug the bore to see what it actually measures. I'm assuming these plated bullets are .330" if your bore is less than .329" pressures will be running high. Your old Jet bullets may have been smaller or being lead they could more easily size down to fit your bore. You could look into casting as an option, custom mold makers can make w/e you need.
 
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smokinbarrel said:
Fill your case with Trailboss to were the base of your bullet will be then weigh it. You may not be able to get 4 gr. in it. Trailboss should not be compressed as the little donuts get crushed which drastically changes it's burn rate. The 100gr bullets you have may work just fine. Generally were you run into trouble with bullets being unstable is when they are too heavy (long) for the rifling twist rate. There is some variation in bore diameter in those 1892 revolvers, it's possible those plated bullets are a bit tight in yours. I would slug the bore to see what it actually measures. I'm assuming these plated bullets are .330" if your bore is less than .329" pressures will be running high. Your old Jet bullets may have been smaller or being lead they could more easily size down to fit your bore. You could look into casting as an option, custom mold makers can make w/e you need.
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The Jet Bullets were normally sized .327", could also be sized .330 if customer requested.

Most of these revolvers had groove diameter of .326 to .327, but did find a couple at .329 and one at .323.
 
smokinbarrel said:
Fill your case with Trailboss to were the base of your bullet will be then weigh it. You may not be able to get 4 gr. in it. Trailboss should not be compressed as the little donuts get crushed which drastically changes it's burn rate. The 100gr bullets you have may work just fine. Generally were you run into trouble with bullets being unstable is when they are too heavy (long) for the rifling twist rate. There is some variation in bore diameter in those 1892 revolvers, it's possible those plated bullets are a bit tight in yours. I would slug the bore to see what it actually measures. I'm assuming these plated bullets are .330" if your bore is less than .329" pressures will be running high. Your old Jet bullets may have been smaller or being lead they could more easily size down to fit your bore. You could look into casting as an option, custom mold makers can make w/e you need.
Click to expand...

I have heard of many people using trail boss just filling the case just before the bullet starts to compress the load. I am sure that would be around 4 grains of trail boss I have never done it however. I cannot believe that no company has load data for this cartridge. As over 350,000 of these revolvers were produced.
 
jethunter said:
The Jet Bullets were normally sized .327", could also be sized .330 if customer requested.

Most of these revolvers had groove diameter of .326 to .327, but did find a couple at .329 and one at .323.
Click to expand...

I purchased the .327 size for my revolver multiple times. I also purchased about 200 or so at .330 as a request. My revolver shot those even better than the .327 size. I have never slugged my bore. But I cannot see the GR bullets being an issue.
 
FARMHANDYO said:
I purchased the .327 size for my revolver multiple times. I also purchased about 200 or so at .330 as a request. My revolver shot those even better than the .327 size. I have never slugged my bore. But I cannot see the GR bullets being an issue.
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The GR copper plated bullets will not conform to your bore as easily as the unplated. I would guess your bore is likely about .003" smaller. It's not that difficult to measure. Take a soft piece of lead or a 00 buckshot and press it into bore get it measured with a micrometer. Tight (oversized) cast bullets often shoot better but jacketed or plated need to be close to groove diameter.
 
FARMHANDYO said:
I purchased the .327 size for my revolver multiple times. I also purchased about 200 or so at .330 as a request. My revolver shot those even better than the .327 size. I have never slugged my bore. But I cannot see the GR bullets being an issue.
Click to expand...

Highwood Casting sells those same 110gr flat nose bullets Jet Bullets used to sell. Highwood make good bullets.
 
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