New to reloading. That being said when loading for 45 colt revolver I seat the bullet to the col of 1.600. After I put a crimp on them my measurement is 1.580. Why is this happening and is it a problem by increasing case pressure? I am loading 5.7 grains of titegroup with 200 gr swc .
Bullet seats deeper after crimping
- Thread starter erniem
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Caliper_Mi
Member
Where is the top of the brass relative to the crimp groove before you crimp?
your load is too low, bring it up. min load on hodgdons site is 6.5 Grains. max 7.7 Grains of TiteGroup, that being said, just crimp to the crimp groove and work up from the min load. dont light load that big case our you might get a squib and you will get a dirty gun aswell. P.S. it is probably just pulling the bullet down by rolling the brass into the crimp groove
rcmodel
Member in memoriam
Not sure what you are using for information.
But 1.600" is the SAAMI Max length for the .45 Colt cartridge.
It is not the recommended seating length with a 200 grain SWC!!
Lyman #49 reloading manual says OAL for the Lyman mold #452460 200 SWC is 1.550".
But, other brands of bullets of the same weight may have the crimp groove in a different place.
It also says the Starting load is 6.1 Titegroup.
You are way under that!!!
Suggest you get a Lyman #49 manual to ward off anymore misconceptions from whatever you are using for load data now.
It's $15 bucks well spent!!
http://www.amazon.com/Lyman-49th-Edition-Reloading-Handbook/dp/B001MYEU0E
rc
But 1.600" is the SAAMI Max length for the .45 Colt cartridge.
It is not the recommended seating length with a 200 grain SWC!!
Lyman #49 reloading manual says OAL for the Lyman mold #452460 200 SWC is 1.550".
But, other brands of bullets of the same weight may have the crimp groove in a different place.
It also says the Starting load is 6.1 Titegroup.
You are way under that!!!
Suggest you get a Lyman #49 manual to ward off anymore misconceptions from whatever you are using for load data now.
It's $15 bucks well spent!!
http://www.amazon.com/Lyman-49th-Edition-Reloading-Handbook/dp/B001MYEU0E
rc
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Hardtarget
Member
After reading other posts I stopped seating and crimping in the same step...and I like my results very well.
Also, remember to back your seat stem away from the bullet.
Just read your info carefully and do a bit of rethink of your process. Your loads will come out fine.
Mark
Also, remember to back your seat stem away from the bullet.
Just read your info carefully and do a bit of rethink of your process. Your loads will come out fine.
Mark
I can't remember the last time I measured the OAL of a revolver round...
Are all the rounds consistent? Is the bullet seated into the crimp groove? Does the bullet fit into your guns?
I wouldn't worry about .02 in a large capacity case like 45LC
Are all the rounds consistent? Is the bullet seated into the crimp groove? Does the bullet fit into your guns?
I wouldn't worry about .02 in a large capacity case like 45LC
Arkansas Paul
Member
For revolver stuff I generally seat and crimp in the same step.
For autos, I seat and then run through a taper crimp die.
So I do both.
For autos, I seat and then run through a taper crimp die.
So I do both.
Thanks BigBore45. I see in the Lymans book it has a starting load of 6.1. So why does Hornady start at 5.7 gr ? And thanks to all, now I know where to look for the correct seating depth.
Now that I get to pull the bullets from 50 rounds and correct the load, should I be able to use the same cases?
Now that I get to pull the bullets from 50 rounds and correct the load, should I be able to use the same cases?
Sunray
Member
"...Lyman #49 reloading manual says..." And Hodgdon gives the 1.600" for a cast 200. Manuals reflect conditions on the day of the test with the firearm/universal receiver used in the test. Hodgdon's data(6.5 starting load for a cast 200), for example, reflects a 7.25" barrel length.
20 thou is not really a big deal. I suspect you're crimping too much and the crimp radius on the seating die is pulling the bullet down a tick when the crimp is applied. Pretty much as BigBore says.
20 thou is not really a big deal. I suspect you're crimping too much and the crimp radius on the seating die is pulling the bullet down a tick when the crimp is applied. Pretty much as BigBore says.
http://www.thehighroad.org/showpost.php?p=7699828&postcount=14
But that said, forget about any OAL in the book. Seat it to roll the case mouth into the crimp groove, and that is the correct OAL for that bullet.
Like these:
And a 200 gr SWC is usually used in the .45 ACP, not .45 Colt, but there is no reason it can't work.
Welcome to THR
My guess is you do not have the bullet seated to the proper OAL so the case mouth gets crimped into the crimp groove. Another .010 deeper isn't going to hurt you in .45 Colt.
But that said, forget about any OAL in the book. Seat it to roll the case mouth into the crimp groove, and that is the correct OAL for that bullet.
Like these:
And a 200 gr SWC is usually used in the .45 ACP, not .45 Colt, but there is no reason it can't work.
Welcome to THR
longdayjake
Member
I may have just been reading fast, but I didn't see anyone try to explain why it was going deeper. My guess is that you aren't seating the bullet deeper when you crimp. Rather, you are making the brass shorter by roll crimping.
Hondo 60
Member
Yes & No - I use 200 gr SWC for both
In fact one of my SAAs LOVES those bullets!
And I agree - the OAL is fine, just shoot 'em.
I've seen that issue too - the bullet wants to be seated at 1.580 - so go ahead & seat 'em there.
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