I wonder if you have load data for lil gun? I’m looking at maybe a 280 gr cast,
Read this and it should give you an idea and a starting or ending point.
https://www.shootersforum.com/threads/45-colt-and-lil-gun.85910/
I wonder if you have load data for lil gun? I’m looking at maybe a 280 gr cast,
in my Marlin 1894.
Great info! Thanks for that, I will look into these.That's a strong gun. You can explore the upper limits of the cartridge with that one.
Now, for cowboy action shooting with the 1873 toggle link action, it has to be much milder. VihtaVuori N320 or N330 is good. For a 200 grain bullet, 8.0 grains N330 will take up the most room in the case on the low side. Some charges, like Win 231, are pretty small volume. Some powders are position sensitive and ignition can be sporadic, giving uneven results.
Accurate #5 will take up the most volume for the low side of a 200 grain bullet: 10.4 grains for 908 fps.
All the above is careful to keep max pressure under 14,000 psi which is the limit for the 1873 toggle link action.
(Toggle link is fragile by comparison to the 94.)
Apparently, that's also the limit for the Colt SAA.
But Rugers and all model 94 levers have much more powerful load data, which, yours does.
Titegroup for the 1873 w/200 grain bullet starts at 6.5 grains.
All above data is for the 45 Colt.
And one other consideration for the 1873 is the blowback. With the original 44-40 cartridge, the case mouth expands under pressure, creating a seal that keeps powder and debris from flowing back past the case mouth into the action.
But the 45 Colt is straight walled and doesn't expand enough to stop blowback, especially when we're talking about loads for (more) fragile firearms. That's why dirty powders like Unique aren't too good.
But powders like VihtaVuori N330 are much cleaner. So, there's always that.
I know the info about the 1873 doesn't apply to yours, but I'm supposed to be picking up an 1873 in 45 Colt next week. And it's becoming quite an interesting project.
So, in the instance with my rifle, plus using Lil Gun (which I understand to get higher velocity loads than say Unique, would this make it a time when I might use checks? Or am I thinking backwards? For example, the 2 bullets I’m looking to decide on, are a 280 gr LSWC with no check, or a 310 gr LSWC with gas checks. Thoughts one these?Low power loads don't require gas checks. Gas checks are brass bases for lead bullets used in higher velocity loads to prevent the lead melting on it's travels through the barrel.
Slug the barrel. It's not complicated, just do it. That will answer your question.Another question that popped up...
Should I look at .451 or .452 for this rifle?
Plus, I’m confused with the whole “With gas checks” or “Without gas checks” situations, if someone could clarify when I should look at using gas checks?
Ok, got it slugged... It measures .452 in all 3 spots I measured. I drove it in from the muzzle end, just like the videos I watched, and measured at the groove points. Did I do it right? If so, does this mean I need .453 or .454 bullets, and not .452, or would .452 be ok too? Would you use gas checks, no gas checks, or does it really matter?Slug the barrel. It's not complicated, just do it. That will answer your question.
Rule of thumb, use a lead bullet at least .001" over groove diameter. Most go .002"
As for the gas check, what sort of velocities do you have in mind ? If using Longshot, I'm guessing you want higher vels. I would suggest a gas check, at least until you become more comfortable with what you are doing.
If the bullet you are using is designed for a gas check, use it. Accuracy can be a problem using a bullet without a GC if it is designed for one.
And, before someone jumps in and says "I got .5 MOA using blah blah blah...", notice I stated that it CAN be a problem, not that it WILL be a problem.
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