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Discussion Starter · #1 ·
A friend gave me a few 300gr hardcast GC .45 bullets (the new Lee 300 grain mould) to try in my 1894CB.

Wondered if anybody had any loads worked up for 300 grainers?

If the weather holds, tomorrow I'm gonna give a few with 20gr H110 a whirl as a start.
 

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I use the 300 grain SWC GC from RCBS.

I load it with 19 grains of H110 for rugers and 23 grains of H110 for the Marlin.

With the 23 grains you will notice it when you pull the trigger. It seems to be a very accurate load, too.
However I might cut back to 21 grains in the near future and see how that works.
If you are not using a gac check you might want to stay around 19 - 20 grains of H110
 
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Discussion Starter · #4 ·
Wel, I loaded a few hardcast 300 grain Gas check bullets (LEE mould) on top of 20 grains of H110 (CCI mag primer) and took the ruger BH and the Marlin 1894CB out to the range.

Out of the Ruger, they ran 1237fps, with stout but manageable recoil, and very mild primer signs. (Partial flattening, less than the 21.5 gr 250XTP load by far.)

Out of the Marlin, they clocked an average of 1469fps, with an ES of 39. (mixed brass might have contributed to one low reading, of 1445, and when it is discarded, the ES shrank to 24) :)

The primers again had VERY mild sign, and the recoil was snappy from the lever gun, but not brutal. They seem to group very nicely, and penetration into water jugs was impressive. Totally obliterated five 2 ltr jugs and was obviously still steaming along when it exited, as indicated by the destruction of the last jug being close to that of the first.

Might step it up a tad, maybe 21 grains, but this is surely a round that extends the effective range of the .45 beyond what I can see with the peep sight. Waay cool.
 

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Just tested some 300 grain flatnose lead bullets from Oregon Trail's True Shot line of bullets out of my 16" 1894 in 45 Colt. I used Alliant 2400 powder at 18 grains for a 3" ten shot group at 100 yards. I tested from 17-20 grains and 18 was the most accurate. I did not get a chance to chrono them so don't know how fast they are going. Definitely a full power load however.
 

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Out of my rugers anything beyond 20 grains of H110 and the 310 grain RCBS is a waste of powder. The extra powder just gets blown out of the barrel. 21 grains - 23.1 grains of H110 all have the same chrony reading of around 1250fps out of a 7 1/2" barrel.
 

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pa ridge runner, Are you sure you mean 32 gr. H-110 with a 300 gr bullet for the 45 colt. That would be a max load in the 454 casule. CAUTION that load is way to hot in 45 colt cases! Byron
 

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pa ridge runner, Are you sure you mean 32 gr. H-110 with a 300 gr bullet for the 45 colt. That would be a max load in the 454 casule. CAUTION that load is way to hot in 45 colt cases! Byron
 

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300gr cast bullet load in 45LC

My favorite midrange load consists of a 300 gr cast plain base bullet over 13gr of HS6 and any Lpistol primers in 45LC cases. I don't shoot these in colt SAA or clones. But in ruger BH or S&W M25's they work well as well as the marlin carbines. Hope this helps, Byron
 

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Typically I use 23.0 grains of W296 behind my 300 grain cast (the RCBS 300 mold which is actually dropping a bullet weighing 322 with a check and lube). I normally use that in any of my 45 Colts (all strong) or down as low as 21.0. They do bark and bite a bit in a handgun but they are quite pleasant in a carbine and certainly effective.
 

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OK now what about useing rifle powder insted? Say one of the faster burning rifle powders like 4064 or RL15?
 
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