Looking for suggestions on powder and bullet choice for my Thompson center encore 24" 1:10. I haven't played with loading for this rifle too much, it does ok with Hornady 100gr soft points over imr4350 and imr4064. Is their a more optimal powder and bullet choice for this setup? I don't hunt much anymore, mostly target shoot but deer size game @ 100yrds is not out .
25-06 bullet & powder choice
- Thread starter 308Loader
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Here's my results with my Winchester model 70 rifle in .270 converted to a Hart barrel, 26" in 25-06:
Sierra 120gr HP W780 53gr CCI 250 4 shots, 0.868" Not graphed
Sierra 120gr HP IMR 4064 44.0gr CCI 250 5 shots 1.243" Ave Velocity= 2975 fps
Berger 115gr VLD RE-22 51gr CCI 250 5 shots: 0.680" Ave Velocity 3034 fps
Speer "Deep Curl" 120gr IMR 7828 55 gr CCI 250 3 shots 0.618" 3207 fps
Sierra 120gr HP W780 53gr CCI 250 4 shots, 0.868" Not graphed
Sierra 120gr HP IMR 4064 44.0gr CCI 250 5 shots 1.243" Ave Velocity= 2975 fps
Berger 115gr VLD RE-22 51gr CCI 250 5 shots: 0.680" Ave Velocity 3034 fps
Speer "Deep Curl" 120gr IMR 7828 55 gr CCI 250 3 shots 0.618" 3207 fps
Colorado Redneck
New member
IMR4831 under 100 gr. Nosler BT's worked great in mine. 110 gr Accubond over Retumbo was extremely accurate.
being a "break barrel" or breach loading single shot I heard that I should stay at the lower velocity's, any one know if that is true?
Thinking of trying some imr4350 with cci br2 and 75gr V-max in PPU brass. Hornady book shows start at 50.2 gr @3200 fps. In what increments would you all load a ladder test?
Thinking of trying some imr4350 with cci br2 and 75gr V-max in PPU brass. Hornady book shows start at 50.2 gr @3200 fps. In what increments would you all load a ladder test?
At longer ranges they retain velocity better and are less effected by wind.(To fend off the nitpikkers: That is assuming the heavier bullet has a higher Ballistic Co-efficient.)
I suggest you look at long range ballistic tables ,the BC's of select bullets,and realistic velocities you may attain.That will give you some idea.
The 4831's are slower than the 4350's.
H4831SC is a "short cut"powder.Its granules are shorter and it works better in a powder dispenser.
Other folks may have different preferences,but for me the 115 gr Ballistic tip has been the .25 cal bullet of choice up to deer size game.
I might opt for a tougher bullet if I used it on elk,but I have other rifles for that.
I suggest you look at long range ballistic tables ,the BC's of select bullets,and realistic velocities you may attain.That will give you some idea.
The 4831's are slower than the 4350's.
H4831SC is a "short cut"powder.Its granules are shorter and it works better in a powder dispenser.
Other folks may have different preferences,but for me the 115 gr Ballistic tip has been the .25 cal bullet of choice up to deer size game.
I might opt for a tougher bullet if I used it on elk,but I have other rifles for that.
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brasscollector
New member
Savage LA
27" Green Mountain heavy barrel, 10" twist
85gr Nosler BT
PPU brass
3.185" OAL
50.0 gr H4350
CCI large rifle primer
Ran 3450fps over my chrono and sub-MOA load if I do my part.
27" Green Mountain heavy barrel, 10" twist
85gr Nosler BT
PPU brass
3.185" OAL
50.0 gr H4350
CCI large rifle primer
Ran 3450fps over my chrono and sub-MOA load if I do my part.
"I suggest you look at long range ballistic tables"
where do I find such tables?
"H4831SC"
Can I find the short cut in the LGS or is that an on the line sort of thing. Wouldn't the short cut change the burn rate of said powder due to the increased surface area? I do like the idea of better powder flow
big stick powder is crunchy in my Hornady dispenser, likes to cut them I think.
where do I find such tables?
"H4831SC"
Can I find the short cut in the LGS or is that an on the line sort of thing. Wouldn't the short cut change the burn rate of said powder due to the increased surface area? I do like the idea of better powder flow
big stick powder is crunchy in my Hornady dispenser, likes to cut them I think.Ballistic tables are in the manuals from powder and bullet manufacturers. Or, check the Hodgdon website: http://www.hodgdonreloading.com/data/rifle
What I usually start with is the powder that gives the highest velocity at max load with the lowest pressure. Obviously don't start loading at the max load.
E.g., from Hodgdon site: a 100gr Nosler Partition in 25-06 shows a whole series of powder choices.
Hybrid V10 gives the highest velocity, 3295 fps with a pressure of 51,500 CUP. But H1000 gives 3212, just 83 fps less at a pressure of 50,700 CUP. H414 gives 3059 fps, also with 50,700 CUP. All other choices give velocities in between these, but with higher pressures.
So I would start with H1000.
The SC powders do not carry a recommendation from Hodgdon that the recipe should be changed from the originl longer cut. Apparently if there is any change due to available surface area they have that covered with the burn rate deterrent used.
What I usually start with is the powder that gives the highest velocity at max load with the lowest pressure. Obviously don't start loading at the max load.
E.g., from Hodgdon site: a 100gr Nosler Partition in 25-06 shows a whole series of powder choices.
Hybrid V10 gives the highest velocity, 3295 fps with a pressure of 51,500 CUP. But H1000 gives 3212, just 83 fps less at a pressure of 50,700 CUP. H414 gives 3059 fps, also with 50,700 CUP. All other choices give velocities in between these, but with higher pressures.
So I would start with H1000.
The SC powders do not carry a recommendation from Hodgdon that the recipe should be changed from the originl longer cut. Apparently if there is any change due to available surface area they have that covered with the burn rate deterrent used.
I have no idea what your LGS stocks,but H 4831 SC is a common,staple powder. There is nothing exotic about it.It will be a versatile and performing powder in 25-06.
It is one of Hogdon's "Extreme" series,which implies temperature stability.
It works fine in my Hornady measure.
For burn rate,it falls between H4350 and H-1000.
Per Hogdon,data is the same for 4831 and 4831SC. I'd still work up .
Actually,(as has been suggested)if you dig around on the toolbar at the Hornady website,you will find a ballistic software available to use.
You plug in parameters like velocity,Ballistic co-efficient,sight height,temp,barometric pressure,and sight in distance and it will run you range tables.
You can learn and compare.
I suppose the way to best choose between H-1000 and H4831sc is to try them.
I'd likely choose the 4831 to start.
In my 26 in bbl 7mm Rem,a 150 gr bullet worked best with IMR4350,a 160 gr bullet worked best with H4831 and a 168 worked best with H-1000.
A 7mm Rem is not a 25-06,but it illustrates it changes with bullet weight.
Barrel length matters,too. Longer barrel can use slower powder to advantage.
Its not anything to argue,proof is in what your rifle shoots.
It is one of Hogdon's "Extreme" series,which implies temperature stability.
It works fine in my Hornady measure.
For burn rate,it falls between H4350 and H-1000.
Per Hogdon,data is the same for 4831 and 4831SC. I'd still work up .
Actually,(as has been suggested)if you dig around on the toolbar at the Hornady website,you will find a ballistic software available to use.
You plug in parameters like velocity,Ballistic co-efficient,sight height,temp,barometric pressure,and sight in distance and it will run you range tables.
You can learn and compare.
I suppose the way to best choose between H-1000 and H4831sc is to try them.
I'd likely choose the 4831 to start.
In my 26 in bbl 7mm Rem,a 150 gr bullet worked best with IMR4350,a 160 gr bullet worked best with H4831 and a 168 worked best with H-1000.
A 7mm Rem is not a 25-06,but it illustrates it changes with bullet weight.
Barrel length matters,too. Longer barrel can use slower powder to advantage.
Its not anything to argue,proof is in what your rifle shoots.
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