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Good powders for 243 Winchester?
Cubslover
Member Posts: 18,601 ✭✭
I've heard that Reloader 7 and 15x, H4350, and Accurate's 4350. Any others I should look at?
Half of the lives they tell about me aren't true.
Comments
--Using 44gr of IMR 4831/70 gr BTHP Sierra and CCI BR2 primers--
--Most accurate is 37.7 gr AA2230c same bullet/primer mid .3" moa--
--[:D][:D]--JIMBO
i concur with the comments above, would just add 2 thoughts
1. might also try W760 powder, mine has liked it
2. for deer w 243 i'd suggest more of a premium game bullet like scirocco, SST, interbond. will make a difference if shot is at an angle, not broadside, esp on a larger deer.
Look at the variety of powders mentioned as favorites. There's a good reason for the number of powders that work in this cartridge, its capacity and the large range of bullet weights. There isn't one powder mentioned that won't work to one extent or another. But there isn't just one powder that will cover the whole range of bullet weights efficiently.
The trick is that you need two powders; one for the light varmint bullets up to the medium weights then one for the medium weights up to the heavier hunting bullets. More powders let you have greater specificity with regard to the weights and designs but they aren't necessary when you start out building loads. You can always add them later.
As an aside from Hodgdon's website:
H380T was an unnamed spherical rifle propellant when the late Bruce Hodgdon first used it. When a 38.0 grain charge behind a 52 grain bullet gave one hole groups from his 22 caliber wildcat (now called the 22-250), he appropriately named the powder H380. H380 is also a superb performer in the 220 Swift, 243, 257 Roberts and other fine varmint cartridges.
Available in 1 lb. & 8 lb. containers.
Best.
Funny though it will not shoot a heavy gr. bullet to save its life. I to would like to find something out on this. tack driver on the light stuff and turd on the 90/100 gr. stuff. have or did Remington change the twist from then until now.
thanks
These are the twist rates listed for Remington models:
243 Winchester - 1 in 9" . . . . . . .Remington 660, 700, 788 (1969);
243 Winchester - 1 in 9 1/8" . . .Remington 700, 7400, 7600, 7;
243 Winchester - 1 in 10" . . . . . . Remington 700, 40-XB;
You can check your twist by using a cleaning rod with a tight fitting patch and measure the distance advanced for one full rotation.
From Hodgdon's website:
.243 Win.
Bullet = 55 GR. NOS BT
Powder = H414
OAL = 2.650"
Minimum = 45.0 / 3611 FPS / 37,400 CUP
Maximum = 50.0 / 3950 FPS / 51,600 CUP
.243 Win.
Bullet = 100 GR. SPR BTSP
Powder = H414
OAL = 2.650"
Minimum = 37.0 / 2800 FPS / 44,500 CUP
Maximum = 40.0 / 2963 FPS / 50,600 CUP
The only thing besides twist that can have a potential effect on stability or groups is velocity. If your loads are significantly reduced or over-pressured, your potential accuracy or smaller groups may suffer. Other variables to play with are the primers and boattail bullets vs. flatbased bullets. The powder that you choose should fill the greater majority of the case for consistancy.
Best.
quote:Originally posted by LongShot 220
I have a brand new 1968 (i think )243 700 BDL that my dad bought in that year and it is brand new, almost. When i take to the range people are allways trying to buy it. IT will shoot a .211 with nosler 55 gr. ballistic tip and 414. The only thing done to gun since my owner ship is a sweet trigger job and floated the barrel. I use 414 in a 70gr. nosler blt. with almost the same results.
Funny though it will not shoot a heavy gr. bullet to save its life. I to would like to find something out on this. tack driver on the light stuff and turd on the 90/100 gr. stuff. have or did Remington change the twist from then until now.
Bill