303 Brit 210gr Hard Cast loads? IMR4895?

Fox

Fox

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I picked up these 210gr bullets cheap, they are hard cast from Bullet Barn.

Does anyone have any book data for these using IMR4895 or IMR3031? All the data I have from Lyman is for really low velocity loads and with powder I do not have or have access to.

The Lyman book of bullet casting shows a 210gr with pistol powders, running up to 1425fps, kinda makes the gas checks moot.

I guess I have some 700x I can dump in the case to have them go bang but I thought I had seen these hard cast listed with IMR4895, similarly to jacketed bullets.

Thanks
 
I used both but charge weights were huge for modest velocity. IMR 4198 is the best powder I have found for charge/velocity. 26 grains gives me 18-1900fps from an 18" barrel. You can go much higher but I have never bothered. I see you posted saying you have no IMR4198 after I made my comment, I did use H4198 a very long time ago but I can't recall any numbers unfortunately.
 
B said:
I used both but charge weights were huge for modest velocity. IMR 4198 is the best powder I have found for charge/velocity. 26 grains gives me 18-1900fps from an 18" barrel. You can go much higher but I have never bothered. I see you posted saying you have no IMR4198 after I made my comment, I did use H4198 a very long time ago but I can't recall any numbers unfortunately.
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I saw some data with IMR4198, I am fully aware that they are not the same, so trying to figure out how much to go up or down.

Not trying to hot rod at all, trying to give some cheap options for shooting the old lee enfields :)
 
Fox said:
I saw some data with IMR4198, I am fully aware that they are not the same, so trying to figure out how much to go up or down.

Not trying to hot rod at all, trying to give some cheap options for shooting the old lee enfields :)
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The 26 grain load is pretty easy on brass so I assume it's very low pressure. I mocked up something similar on a loading program, pressure should be 27,000PSI give or take.

I know that doesn't help you but IMR4198 seems to be one of the easier powders to find in these panicked times and a little goes a long way with great results in this case.
 
B said:
The 26 grain load is pretty easy on brass so I assume it's very low pressure. I mocked up something similar on a loading program, pressure should be 27,000PSI give or take.

I know that doesn't help you but IMR4198 seems to be one of the easier powders to find in these panicked times and a little goes a long way with great results in this case.
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Pre-covid I had close to a pound of IMR4198, had no use for it as my 222 shoots great with H4198. I used up that powder for my brother, making up a bunch of start loads for his 223 so we could fire form the brass, ha ha ha, now I am regretting that.

If I run across some I will grab it for sure, nobody around me has powder, I am lucky to have what I have right now, from my orders back at the start of covid.
 
look at jacketed bullet loads of that weight then use 60% of max with your cast bullets this is with 4895 good luck
 
Starting load for H4198 is about 21 grs. Slightly slower than the IMR 4198. The power I have the best results with is Alliant 2400. I find the 4198’s give vertical stringing. Your 700x with 10 grs would give a mild plinking load. I cast my own using the Lyman 205 gr 314299. I have found 2400 works well in many 303’s.
 
Snider shooter said:
Starting load for H4198 is about 21 grs. Slightly slower than the IMR 4198. The power I have the best results with is Alliant 2400. I find the 4198’s give vertical stringing. Your 700x with 10 grs would give a mild plinking load. I cast my own using the Lyman 205 gr 314299. I have found 2400 works well in many 303’s.
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Do you have book data on this or is this just from your experience?

I am hoping to keep the 700x for my 16ga :)
 
Look up Col. C E Harris. He has some excellent articles on cast rifle bullets in military rifle calibers. His favourite cast rifle powder is 2400. He also mentions about using pistol/shotgun powders in many of his articles. Most of the loads he uses are in some of the older Lyman manuals.
 
Snider shooter said:
Look up Col. C E Harris. He has some excellent articles on cast rifle bullets in military rifle calibers. His favourite cast rifle powder is 2400. He also mentions about using pistol/shotgun powders in many of his articles. Most of the loads he uses are in some of the older Lyman manuals.
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I have access to the old Lyman books, but why bother with a gas checked bullet if you are running it at 1000fps with shotgun powder.

The biggest issue though is access to powder, 2400 may be nice but I do not have any and powder is very hard to come by right now, if you can find it people are asking $100/lb, which is insanity.
 
Fox said:
I have access to the old Lyman books, but why bother with a gas checked bullet if you are running it at 1000fps with shotgun powder.

The biggest issue though is access to powder, 2400 may be nice but I do not have any and powder is very hard to come by right now, if you can find it people are asking $100/lb, which is insanity.
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I can get you some numbers for H4198 on quickload if you need it. Would give you a starting point at least. I do that all the time for powders and components I can't find data for.
 
I use lots of 700X and Unique for plinking loads in my old milsurps, along with home grown cast bullets.
 
jethunter said:
I can get you some numbers for H4198 on quickload if you need it. Would give you a starting point at least. I do that all the time for powders and components I can't find data for.
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Thanks, would be worth seeing at least.

I am curious as to how far off H4198 is from IMR 4198.
 
From what I recall I ended up using H4198 with IMR data and it tracked pretty well on the chronograph. Use 28 grains as your "max" and you won't be able to get into much trouble.
 
Quickload 303 Brit + 210gr cast:

At these pressures there isn't much difference between H4198 and IMR4198 aside from fill volume.

IMR4198, 30gr, 75% fill, 2000 fps, 35K psi
IMR4198, 28gr 70% fill, 1900 fps, 30K psi
H4198, 30gr, 70% fill, 2000 fps, 35k psi
H4198, 28gr 65% fill, 1900 fps, 30k psi

Both 4198 powders download well. Powder burn 100% in all these QL load predictions.
I use the 28gr and 30gr IMR loads with 215gr GC cast bullets and the QL velocities are right on.
 
jethunter said:
Quickload 303 Brit + 210gr cast:

At these pressures there isn't much difference between H4198 and IMR4198 aside from fill volume.

IMR4198, 30gr, 75% fill, 2000 fps, 35K psi
IMR4198, 28gr 70% fill, 1900 fps, 30K psi
H4198, 30gr, 70% fill, 2000 fps, 35k psi
H4198, 28gr 65% fill, 1900 fps, 30k psi

Both 4198 powders download well. Powder burn 100% in all these QL load predictions.
I use the 28gr and 30gr IMR loads with 215gr GC cast bullets and the QL velocities are right on.
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Thanks, even fill volume is not that much different, not enough to really be concerned.
 
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