6x45

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starvin

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Thinking of building a petite deer/coyote calling rifle. Anybody done a 6x45 on a riihimaki L461? Is there room to seat an 85 grain bullet?
 
Depends on the bullet.......... Barnes may not


I have 2 6x45's one on a l461 action 1-10 twist Shilen and one a AI action, 1-8 twist Benchmark both shoot 80 gr Win cup and core bullets at approx 2800 fps, and 65 gr Hornady at close to 3000 fps .

357
 
starvin said:
Thinking of building a petite deer/coyote calling rifle. Anybody done a 6x45 on a riihimaki L461? Is there room to seat an 85 grain bullet?
Click to expand...

Ditto what 357Maximum said- there's room in that mag, but not a ton. Remember it was originally developed for the .222 so even long .223 loads can be a squeeze. I run a .204 Ruger in a 461 Vixen, but length is limited for 40gr bullets.

Personally I wouldn't want to run the Barnes 80-85gr bullets out of the X45 anyway, as they're heavily dependent on velocity to expand and the X45 is just a wee bit slow especially at distance. I killed a pile of deer (8 or 9) with an 80gr TTSX out of my .243 Win, and found that expansion drops off sharply to near-FMJ performance at around 300 yards, which translates to an impact velocity of around 2400 FPS when started at 3300 from my .243. Out of the X45 started at 2800 FPS, that shortens your effective range for good performance to just 180 yards by my numbers.

Now the 85gr Sierra Gameking on the other hand... now that would be a winner :)
 
I've got a Cooper in 6x45, great we rifle, the 85 gr Serria soft point is a great performer for deer, I've shot a dozen with it, as is there 75 gr hollow point, Hornardy 87 gr soft point or hollow points are good at 6x45 speeds. 2750-2850fps. For this weight class in my 20" Cooper,
I think the magazine length limit is about 57mm in the l461 Sako, I've got 61 mm in the Cooper, you might be down a bit, on the above speeds, due to bullet seating deeper in the case to fit magazine.
I've got the 85 gr Serria and the 65 gr v-max dialled in to same point of impact at 200 m, 65 v max at 3100 fps , Cfe223 powder. 28 gr for the 85 gr, benchmark 27 gr for the v-max.
Very versitial little carry rifle,
Build one doubt you will be dissapointed,
 
Hopefully this is of interest to you

Code: 
Cartridge          : [B]6 x 45mm[/B]
Bullet             : .[B]243, 85, Nosler[/B] PART SP 16314
Useable Case Capaci: 25.336 grain H2O = 1.645 cm³
[B]Cartridge O.A.L.[/B] L6: [B]2.260 inch[/B] = 57.40 mm
Barrel Length      : 22.0 inch = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 55000 psi, or 379 MPa
or a maximum loading ratio or filling of 104 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

85 loads produced a Loading Ratio below user-defined minimum of 80%. These powders have been skipped.
Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
Alliant AR-Comp                    100.6     22.7     1.47    2727   100.0    55000    5990   1.038  ! Near Maximum !
Hodgdon CFE223                      98.9     25.7     1.67    2715    95.0    55000    6871   1.039  ! Near Maximum !
Winchester 748                      97.0     24.4     1.58    2715    97.3    55000    6680   1.041  ! Near Maximum !
Hodgdon BL-C2                       99.5     25.4     1.64    2706    96.1    55000    6823   1.049  ! Near Maximum !
IMR 3031                           104.0     22.7     1.47    2705    99.6    52497    6477   1.055  ! Near Maximum !
IMR 4895                           104.0     24.3     1.57    2701    94.7    54879    6872   1.053  ! Near Maximum !
Hodgdon H322                        97.4     22.1     1.43    2681    99.3    55000    6254   1.051  ! Near Maximum !
Hodgdon H4895                      100.8     23.5     1.53    2678    95.4    55000    6671   1.059  ! Near Maximum !
Hodgdon H335                        91.8     23.4     1.52    2677    98.6    55000    6400   1.055  ! Near Maximum !
Alliant Reloder-15                 104.0     24.3     1.57    2664    93.5    53845    6716   1.064  ! Near Maximum !
Alliant Reloder-10x                 94.4     20.8     1.35    2652   100.0    55000    5885   1.070  ! Near Maximum !
IMR 8208 XBR                        99.1     23.1     1.50    2647    96.2    55000    6358   1.063  ! Near Maximum !
 
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