7x57 QL Request
- Thread starter Palouser
- Start date
Step 1. for a Quickload request is the case capacity of a fired case from your rifle. Without the correct case capacity the chamber pressure can vary as much as 6,000 to 8,000 psi.
Step 2. for approximate Quickload data you need a chronograph and then change the burn rate in Quickload until the velocities match the velocity from your rifle. To be truthful reloading data from the Hodgdon's would be more accurate than a computer generated guess.
You have a sticky at the top of the page that explains all of this. I have Quickload and I'm surprised at all the Quickload requests here and the forum members not reading the sticky. Quickload needs to be tweaked and tuned to output accurate data, anything else is just a WAG.
Step 2. for approximate Quickload data you need a chronograph and then change the burn rate in Quickload until the velocities match the velocity from your rifle. To be truthful reloading data from the Hodgdon's would be more accurate than a computer generated guess.
You have a sticky at the top of the page that explains all of this. I have Quickload and I'm surprised at all the Quickload requests here and the forum members not reading the sticky. Quickload needs to be tweaked and tuned to output accurate data, anything else is just a WAG.
Code:
Cartridge : 7 x 57 mm Mauser (SAAMI)
Bullet : .284, 150, Nosler BalTip 28150
Useable Case Capaci: 50.979 grain H2O = 3.310 cm³
Cartridge O.A.L. L6: 3.000 inch = 76.20 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-10.0 90 41.37 2362 1858 37502 8641 90.9 1.366
-09.0 91 41.83 2388 1899 38659 8758 91.4 1.346
-08.0 92 42.29 2414 1941 39852 8873 91.9 1.328
-07.0 93 42.75 2440 1983 41081 8986 92.4 1.309
-06.0 94 43.21 2466 2025 42351 9097 92.9 1.290
-05.0 95 43.67 2492 2068 43660 9206 93.4 1.272 ! Near Maximum !
-04.0 96 44.13 2518 2111 45010 9314 93.8 1.254 ! Near Maximum !
-03.0 97 44.59 2544 2155 46405 9419 94.3 1.237 ! Near Maximum !
-02.0 98 45.05 2570 2199 47839 9522 94.7 1.220 ! Near Maximum !
-01.0 99 45.51 2596 2244 49313 9623 95.1 1.203 ! Near Maximum !
+00.0 100 45.97 2622 2289 50828 9721 95.5 1.186 !DANGEROUS LOAD-DO NOT USE!
+01.0 101 46.43 2648 2335 52389 9817 95.9 1.170 !DANGEROUS LOAD-DO NOT USE!
+02.0 102 46.89 2674 2381 54000 9910 96.2 1.154 !DANGEROUS LOAD-DO NOT USE!
+03.0 103 47.35 2700 2428 55663 10000 96.6 1.138 !DANGEROUS LOAD-DO NOT USE!
+04.0 104 47.81 2726 2475 57380 10088 96.9 1.123 !DANGEROUS LOAD-DO NOT USE!
+05.0 105 48.27 2752 2522 59153 10173 97.2 1.107 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba 100 45.97 2691 2412 55416 9814 97.8 1.142 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 100 45.97 2543 2155 46244 9521 92.3 1.236 ! Near Maximum !
Code:
Cartridge : 7 x 57 mm Mauser (SAAMI)
Bullet : .284, 150, Nosler BalTip 28150
Useable Case Capaci: 50.987 grain H2O = 3.310 cm³
Cartridge O.A.L. L6: 3.000 inch = 76.20 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-17
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-10.0 88 43.34 2551 2167 40804 10024 98.5 1.294
-09.0 89 43.83 2579 2216 42152 10118 98.8 1.274
-08.0 90 44.31 2608 2265 43548 10207 99.0 1.254 ! Near Maximum !
-07.0 91 44.79 2636 2314 44992 10291 99.3 1.236 ! Near Maximum !
-06.0 92 45.27 2664 2364 46486 10370 99.5 1.217 ! Near Maximum !
-05.0 93 45.75 2692 2414 48034 10443 99.6 1.199 ! Near Maximum !
-04.0 94 46.23 2720 2465 49637 10511 99.8 1.181 ! Near Maximum !
-03.0 95 46.72 2748 2515 51298 10573 99.9 1.163 !DANGEROUS LOAD-DO NOT USE!
-02.0 96 47.20 2776 2566 53018 10630 100.0 1.146 !DANGEROUS LOAD-DO NOT USE!
-01.0 97 47.68 2803 2618 54801 10680 100.0 1.129 !DANGEROUS LOAD-DO NOT USE!
+00.0 98 48.16 2831 2669 56651 10725 100.0 1.112 !DANGEROUS LOAD-DO NOT USE!
+01.0 99 48.64 2858 2721 58566 10768 100.0 1.096 !DANGEROUS LOAD-DO NOT USE!
+02.0 100 49.12 2886 2774 60554 10809 100.0 1.080 !DANGEROUS LOAD-DO NOT USE!
+03.0 101 49.60 2913 2826 62617 10850 100.0 1.064 !DANGEROUS LOAD-DO NOT USE!
+04.0 102 50.09 2940 2879 64757 10890 100.0 1.048 !DANGEROUS LOAD-DO NOT USE!
+05.0 103 50.57 2967 2932 66980 10929 100.0 1.033 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba 98 48.16 2895 2791 62693 10476 100.0 1.067 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 98 48.16 2752 2522 51041 10906 99.3 1.163 !DANGEROUS LOAD-DO NOT USE!- Thread starter
- #7
Thanks Scotty et al. Before I got this I loaded 45 to 49 grain in 1 grain increments. At 49 grains there are no pressure signs at all, think I'm ok or back it off? 49 grains should be at 60k. I don't have 17 but I'll look for some. The shots for 48 grains and 49 grains were touching so I'm guessing that's where the accuracy is. It's in a tang safety Ruger so the action should be pretty strong and able to handle 60k, don't you think?
Palouser. I have the same make rifle as Scotty and I worked up to his max load. No stiff bolt lift, prime pockets still tight and very high velocity. Still, my next run with RE17 is gonna be a bit more conservative. Couple of reasons, much of my test shooting is in temps running 100 degrees or higher. Pressures show up a lot faster on those days. The other reason is that on the rare occasion my wife decided to hunt with me and has a tag, she grabs that rifle. I put a Pachmeyr Decelerator pad on it more for her comfort than anything else. I do love that M70 FWT. I still have to load up a few rounds with different seating depths to see if it'll improve accuracy with the 150 gr. Nosler Partition. I'll also be running a few Nosler 150 gr. ABLRs to see if they'll work in that rifle.
I'm sure you're familiar with the fact that the 7x57 isn't loaded to it's full potential because of the old 93 and 95 Mausers that are considered too weak which explains the wussy factory ammo and wimpy load data in the manuals. At one time, Sierra did not even cheat fair, using a rifle with a 29" barrel. :shock:
The more I play with my 7x57's the more I like them.
Paul B.
I'm sure you're familiar with the fact that the 7x57 isn't loaded to it's full potential because of the old 93 and 95 Mausers that are considered too weak which explains the wussy factory ammo and wimpy load data in the manuals. At one time, Sierra did not even cheat fair, using a rifle with a 29" barrel. :shock:
The more I play with my 7x57's the more I like them.
Paul B.
nvbroncrider
Handloader
- Aug 20, 2011
- 3,085
- 3
With a good action like that it's fine. Most data is loaded much lower to prevent issues with the early Mauser actions in which they were chambered. I load mine heavy in my M70. Don't over look H 414 I'm running 48 with a 150 PT lights out.
Jake
Jake
- Oct 30, 2004
- 24,073
- 2,593
bigedp51":3u3vamjq said:
You are correct and as has been stated before -many times- any Q/L request should be treated as a reference just like a loading manual. Now IF an individual want the best accuracy they should adhere to the sticky.
- Thread starter
- #12
