Question about using 220 gr with 240 data

[catkiller45]

Maybe no answer to this but Im gonna ask anyway..bought some 220 gr cast HP bullets and found no such data for this weight bullets..So i'm going with the 240 grain bullet reduced a little..Havent got my chronograph out yet..So lets say a certain load was pushing the 240 at around 900 fps..What do you suppose the 220 is doing as far as speed..Maybe an educated guess..I can't find my tripod..Never let anyone borrow things...Thanks for any stabs are it..I do know that the 220's shoot great...John

44 SPECIAL ONLY...

[megasupermagnum]

Can I assume 44 special? Alliant says a 225 gr SWC with 7.8 grains Unique will do 1,043 fps in a 5.5" barrel. Personally I think that might be a bit optimistic. Hogdon says a 220 grain with 7.5 grains 800x will do 956 fps in an 8" barrel, which seems more realistic.

[Crash_Corrigan]

I have a Charter Arms .44 Bulldog Pug with a 2" tube and a Ruger Blackhawk Bisley with a 5.5" tube. With at 240 gr LSWC boolit and 5.5 gr of Unique I am comfortable with the Bulldog. Any heavier powder charge is getting uncomfortable with the light gun.

With the bigger and heavier Bisley my normal plinking loading is 6.5 gr of Unique under a 240 gr LSWC boolit. With that loading I get decent accuracy without excess recoil.

Usually a lighter boolit takes more powder as the combustion space is bigger with a shorter bullet. I would try 5 gr at first and work up the charge in half grain increments until you reach your sweet spot with acceptable accuracy and recoil according to what weapon you have.

I know a 6.5 gr loading of Unique is nasty in my bulldog and I only fired two rounds with that loading before I broke them down to a lighter loading.

[catkiller45]

It is 44 special..PowdersI have are unique,tightgroup,2400,and blue dot...Taurus 6.5 inch barrel..Gotta get a load before deer season...I have 240 and 255 grain bullets as well..Just thought maybe the HP might be a better bullet if velocity was on par..Thanks

[rancher1913]

go with a load from above before you make one up yourself, a heavier boolit usually takes less powder than a lighter one but there are a lot of factors in play

[JBinMN]

Catkiller45,

You asked this question back on November 6th here in this topic:
http://castboolits.gunloads.com/show...-44-Mag-44-Spl

& you were provided answers to your question(s).

I am not sure why you are asking again here in this topic, but my answer would remain the same here, as it was before for both 44 Remington Magnum, and for 44 S&W Special. Perhaps you could not find it again?

Anyway, below is a copy/paste of my post#3 from that topic & a link to that post. There are others who replied to you in that other topic as well & you may want to click on the link at the start of this post if you want to read them.
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Generally you can use the next greater weight load data for a lighter boolit/bullet, IF the weight of the next greater boolit/bullet is within a reasonable amount of weight above the lower grain projectile. I generally use the 10 grain rule or less. If the weight of the next higher/greater weight projectile is within 10 gr. or less of the desired lesser /lower weight projectile, then I feel safe enough using the 10% from Max. rule below to extrapolate load data ranges in grains. for the heavier projectile to the lower weight projectile & work my way up from there.

( A chronograph is quite useful as well in doing this as you can compare velocities to the loads as they are fired & see how those posted velocities match up with your testing. Velocity will reflect pressure & help you decide if you are pushing the limit of your tests for that particular lesser weight boolit as you work up.)

So , if you you have data for a 225 gr. projectile, you could use that data for a 220gr projectile, working up slowly & using the Start weight for grains using 10% of Max rule - so I would suggest START- ing loads at usually 10% of Max load, while looking for pressure signs like hard extraction of the fired case/lift of bolt handle, primers backing out or cratering, etc. as you progress up in grains to the MAX load. I also suggest using 1 tenth/inch steps ( 0.01") in grains with handguns as the load data ranges are usually smaller than the rifle load ranges where one can usually go up in steps of 3 tenths/inch at a time( 0.03").

Keep an eye on the OAL length of the round , so you do not put the base of the projectile in further than the one load data you are using or pressure can build quite fast. You can usually find projectile dimensions from the mnfr of the projectile or from the mnfr of the mold used to cast the projectiles.

NOTE - DO NOT use this process the other way around with a lighter projectile load data for a heavier projectile or usually bad things can happen, like injuries, etc. or damage to ones firearm or both.

Below is some data for 44 Special & 44 Mag for you to look at. Sources are provided for you to go look for yourself. I just found & brought them here in a short time. There are likely more if you look further.

G'Luck!
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Here is some data from handloads.com( Vitavuori powders) for a 44 Special using 220gr. boolits/bullets:

220gr FPJ 6.4 gr VV N320 894 fps 1.469" Vihtavuori
Suggested starting load: 5.8 gr

220gr FPJ 7.4 gr VV N330 952 fps 1.469" Vihtavuori
Suggested starting load: 6.7 gr

220gr FPJ 7.6 gr VV N340 932 fps 1.469" Vihtavuori
Suggested starting load: 6.8 gr

220gr FPJ 8.8 gr VV N350 974 fps 1.469" Vihtavuori
Suggested starting load: 7.9 gr

Source: Handloads.com https://web.archive.org/web/20170820...Powder&Source=

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Here is some data from handloads.com( Vitavuori powders) for a 44 Special using 222gr. boolits/bullets:

Start loads would be about 10% less than Max load
Note the charges are the Maximum charges in grains Max Charge

44 Special 222 RCBS 44-225-SWC 222gr sr 4759 13.3 759 0.000 CastData R1
44 Special 222 RCBS 44-225-SWC 222gr 2400 12.8 823 0.000 CastData R1
44 Special 222 RCBS 44-225-SWC 222gr HS-6 7.6 726 0.000 CastData R1
44 Special 222 RCBS 44-225-SWC 222gr sr 7625 7.5 845 0.000 CastData R1
44 Special 222 RCBS 44-225-SWC 222gr unique 6.6 793 0.000 CastData R1
44 Special 222 RCBS 44-225-SWC 222gr HP-38 5.0 776 0.000 CastData R1

Source: http://castpics.net/dpl/index.php/re...et-data-lookup
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Here is some data from castpics.net for a 44mag using 225gr. boolits/bullets:
Start loads would be about 10% less than Max load

Note the charges are the Maximum charges in grains Max Charge

44 Magnum 225 RCBS 44-225-SWC 225gr win 296 24.3 1418 0.000 CastData R1
44 Magnum 225 RCBS 44-225-SWC 225gr imr 4227 21.5 1266 0.000 CastData R1
44 Magnum 225 RCBS 44-225-SWC 225gr HS-6 15.7 1514 0.000 CastData R1
44 Magnum 225 RCBS 44-225-SWC 225gr unique 11.8 1299 0.000 CastData R1
44 Magnum 225 RCBS 44-225-SWC 225gr win 231 11.3 1320 0.000 CastData R1
44 Magnum 225 RCBS 44-225-SWC 225gr bullseye 6.5 925 0.000 CastData R1

Source: http://castpics.net/dpl/index.php/re...et-data-lookup
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Here is some data from Stevespages for a 44mag using 220gr. boolits/bullets:

2400 From 19.5 grains to 22.7 grains
CCI-350 Primer

AA-7 From 15.2 grains to 18.0 grains
CCI-350 Primer

AA-9 From 18.6 grains to 21.6 grains
CCI-350 Primer

Blue Dot From 14.6 grains to 17.8 grains
CCI-350 Primer

H-110 From 22.4 grains to 25.3 grains
CCI-350 Primer

IMR-4227 From 21.6 grains to 25.8 grains
CCI-350 Primer

N-110 From 17.6 grains to 22.0 grains
CCI-350 Primer

W-296 From 22.5 grains to 26.0 grains
CCI-350 Primer

Source: http://stevespages.com/429_1_220.html

Source:http://castboolits.gunloads.com/show...=1#post4758165
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G'Luck! once again.

[JBinMN]

Here is a Screen Grab from the Hodgdens pistol data page located here: http://www.hodgdonreloading.com/data/pistol

for 44 S&W Special with a 220 grain Berrys Bullet Flat Point. It is a plated, not cast or jacketed bullet. You can use the data for that plated bullet for your cast boolit, but you once again, need to start low & work up looking for pressure signs. Personally, I would subtract 10% from each start load, just to make sure, but you can do as ya like...

Here is the page screen grab:


Mnfr Powder Bullet Diam. C.O.L. Start Grs. Vel. (ft/s) Pressure Max. Grs. Vel. (ft/s) Pressure
Winchester 572 .430" 1.460" 6.3 809 8,900 CUP 7.3 952 13,200 CUP

Hodgdon 800-X .430" 1.460" 6.5 826 10,200 CUP 7.5 959 13,500 CUP

IMR SR 4756 .430" 1.460" 7.1 814 10,100 CUP 7.9 915 12,800 CUP

Hodgdon HS-6 .430" 1.460" 7.2 750 8,500 CUP 8.7 941 13,700 CUP

Winchester AutoComp .430" 1.460" 6.4 828 8,900 CUP 7.3 937 13,300 CUP

Hodgdon Universal .430" 1.460" 5.7 748 8,700 CUP 6.5 918 13,700 CUP

Winchester 244 .430" 1.460" 5.2 712 8,700 CUP 6.1 874 13,500 CUP

Winchester 231 .430" 1.460" 4.8 695 8,200 CUP 5.8 845 13,000 CUP

Hodgdon HP-38 .430" 1.460" 4.8 695 8,200 CUP 5.8 845 13,000 CUP

IMR SR 7625 .430" 1.460" 6.1 781 9,800 CUP 6.9 898 13,600 CUP

IMR PB .430" 1.460" 5.3 789 8,100 CUP 6.2 864 12,800 CUP

Hodgdon Trail Boss .430" 1.460" 4.0 633 7,300 CUP 5.1 766 12,800 CUP

IMR IMR Target .430" 1.460" 4.3 705 7,300 CUP 5.1 843 13,200 CUP

Hodgdon Titegroup .430" 1.460" 4.7 772 9,600 CUP 5.4 875 13,300 CUP

IMR IMR Red .430" 1.460" 4.9 794 9,900 CUP 5.6 902 13,800 CUP

Hodgdon 700-X .430" 1.460" 4.5 777 9,700 CUP 5.2 872 13,200 CUP

Hodgdon Clays .430" 1.460" 3.7 638 7,800 CUP 4.4 774 13,600 CUP

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[catkiller45]

Your right I did ask but don't think I had ask about a 220 gr bullet??