Quickload help please

[Trnelson]

Earlier today my friend brought his 24" barrel 260 rem to the range for the second time he's shooting a hornady 129SST at 3063fps over my magneto speed. That speed was subsequently validated to 1025 yards this morning. Primers are dead flat with a crater around the firing pin penetration, fired brass won't stand on the base, I'm thinking he's way outside of safe pressure and would appreciate some help guiding him back to reality. None of my library of reloading manuals even list that powder with a 129 - 130 grain bullet.
Details:
Brass: 155g-158g
Powder: superformance
Primer: CCI benchrest LR
OAL: 2.778"

 

[FearNoWind]

If your friend needs Quickload data to validate that he's loading way over pressure then, IMO, you need to find another friend to spend range time with. Stand fifty yards back the next time he fires that 260.

 

[Trnelson]

[QUOTEStand fifty yards back the next time he fires that 260.[/QUOTE]

I'm certain you are right, I won't be giving him another opportunity to take my well-being in his hands without my permission. It isn't cute and it isn't cool. I wasn't aware that he is ~160fps over every published load in every manual I have on the shelf until I got back home, but those primers scream back off. I don't have superformance data listed in any of my manuals for 260 rem, so I don't know exactly where it's at, and I would like to see a Quickload prediction to see just what brand of crazy is on exhibit.

 

[FearNoWind]

[QUOTEStand fifty yards back the next time he fires that 260.

... I would like to see a Quickload prediction to see just what brand of crazy is on exhibit.[/QUOTE]

Wish I could help you my friend. Hope someone on the forum has Quickload so you can catalogue the data you need.

 

[AD5GB]

A quick and ugly table - Superformance powder isn't available in QL.


Cartridge : .260 Rem
Bullet : .264, 129, Hornady SST InterLock 26202
Useable Case Capaci: 46.382 grain H2O = 3.012 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 52666 psi, or 363 MPa
or a maximum loading ratio or filling of 110 %
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 !

7 loads produced a Loading Ratio below user-defined minimum of 90%. 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 Reloder-26 105.1 48.3 3.13 2940 99.6 52667 11019 1.208 ! Near Maximum !
Norma MRP 105.4 47.0 3.05 2898 97.7 52667 10841 1.211 ! Near Maximum !
ReloadSwiss RS 60 95.0 42.6 2.76 2886 100.0 52667 9777 1.207 ! Near Maximum !
ReloadSwiss RS 70 101.3 46.1 2.99 2870 98.0 52667 10491 1.207 ! Near Maximum !
Vihtavuori N560 106.7 46.6 3.02 2870 93.9 52667 10764 1.213 ! Near Maximum !
Alliant Reloder-17 94.1 42.2 2.73 2865 100.0 52667 9718 1.214 ! Near Maximum !
Elcho 17 94.1 42.2 2.73 2865 100.0 52667 9718 1.214 ! Near Maximum !
Alliant Reloder-22 107.1 46.3 3.00 2862 96.3 52667 10515 1.216 ! Near Maximum !
Bofors RP5/NP ~approximation 107.1 46.3 3.00 2862 96.3 52667 10515 1.216 ! Near Maximum !
Raufoss RA15 107.1 46.3 3.00 2862 96.3 52667 10515 1.216 ! Near Maximum !
Alliant Reloder-23 110.0 46.0 2.98 2861 100.0 52298 9864 1.220 ! Near Maximum !
Accurate MAGPRO 107.4 48.8 3.16 2860 92.1 52667 10754 1.217 ! Near Maximum !
Winchester WXR 110.0 46.5 3.01 2860 96.1 52659 10515 1.217 ! Near Maximum !
Bofors RP15 110.0 46.5 3.01 2860 96.1 52659 10515 1.217 ! Near Maximum !
SNPE Vectan SP 12 109.4 49.9 3.24 2849 94.6 52667 10616 1.208 ! Near Maximum !
PB Clermont PCL 517 109.6 50.0 3.24 2849 94.5 52667 10625 1.208 ! Near Maximum !
Somchem S365 101.2 43.0 2.79 2845 100.0 52667 9296 1.225 ! Near Maximum !
Alliant Reloder-16 100.8 42.0 2.72 2842 99.9 52667 9602 1.225 ! Near Maximum !
IMR 7828 SSC 104.9 46.1 2.99 2842 94.2 52667 10386 1.209 ! Near Maximum !
ReloadSwiss RS 62 97.7 43.8 2.84 2835 99.4 52667 9789 1.234 ! Near Maximum !
Ramshot Magnum 106.8 49.7 3.22 2826 96.6 52667 10098 1.212 ! Near Maximum !
ADI AR 2213 105.6 45.6 2.96 2825 94.0 52667 10250 1.210 ! Near Maximum !
PB Clermont PCL 511 95.5 43.5 2.82 2823 98.5 52667 9833 1.224 ! Near Maximum !
Ramshot Hunter 98.7 43.6 2.82 2822 98.5 52667 9819 1.224 ! Near Maximum !
Rottweil R905 108.2 45.9 2.97 2817 93.9 52667 10074 1.220 ! Near Maximum !
IMR 7828 110.0 45.7 2.96 2815 93.7 51193 10298 1.225 ! Near Maximum !
Alliant Reloder-19 103.0 44.1 2.86 2812 96.1 52667 9929 1.220 ! Near Maximum !
Winchester 760 93.0 42.1 2.72 2811 97.8 52667 9762 1.229 ! Near Maximum !
Hodgdon H414 93.0 42.1 2.72 2811 97.8 52667 9762 1.229 ! Near Maximum !
Accurate 4350 97.8 41.8 2.71 2807 99.6 52667 9511 1.250 ! Near Maximum !
Norma URP 98.1 41.5 2.69 2807 99.5 52667 9487 1.233 ! Near Maximum !
Bofors RP19 ~approximation 98.1 41.5 2.69 2806 99.5 52667 9484 1.233 ! Near Maximum !
ADI AR 2209 102.3 43.5 2.82 2806 95.8 52667 9839 1.215 ! Near Maximum !
Bofors RP14 ~approximation 103.8 44.4 2.88 2805 96.0 52667 9855 1.221 ! Near Maximum !
Vihtavuori N550 95.1 41.5 2.69 2804 99.4 52667 9581 1.239 ! Near Maximum !
ADI AP 2214 109.6 48.6 3.15 2800 93.8 52667 10114 1.212 ! Near Maximum !
Alliant Reloder-25 110.0 46.8 3.03 2797 98.3 47473 10398 1.266
IMR 4831 103.0 42.2 2.73 2791 99.6 52667 9306 1.242 ! Near Maximum !
Bofors RP4 ~approximation 100.8 43.1 2.79 2786 95.8 52667 9634 1.223 ! Near Maximum !
Norma 204 97.6 43.1 2.79 2786 95.8 52667 9634 1.223 ! Near Maximum !
Raufoss RA4 100.8 43.1 2.79 2786 95.8 52667 9634 1.223 ! Near Maximum !
Accurate 3100 107.4 45.9 2.98 2785 98.5 52667 9484 1.251 ! Near Maximum !
Somchem S385 103.5 44.7 2.90 2783 97.1 52667 9585 1.241 ! Near Maximum !
Bofors RP5 NT ~approximation 109.0 47.5 3.08 2781 91.2 52667 9929 1.218 ! Near Maximum !
Hodgdon Hybrid 100V 100.9 41.7 2.70 2778 100.0 52667 8794 1.230 ! Near Maximum !
Hodgdon H4831 SC 104.2 45.0 2.92 2774 93.4 52667 9626 1.220 ! Near Maximum !
Hodgdon H4831 108.4 45.0 2.92 2774 93.4 52667 9626 1.220 ! Near Maximum !
Bofors RP4 NT ~approximation 98.4 42.7 2.77 2770 97.5 52667 9397 1.237 ! Near Maximum !
Vihtavuori N165 109.0 46.1 2.99 2767 96.6 52667 9329 1.229 ! Near Maximum !
Winchester Supreme 780 101.9 45.9 2.98 2766 95.8 52667 9433 1.225 ! Near Maximum !
Bofors RP3 90.6 39.2 2.54 2759 100.0 52667 8812 1.258 ! Near Maximum !
Norma 203 old 90.6 39.2 2.54 2759 100.0 52667 8812 1.258 ! Near Maximum !
Hodgdon H380 90.0 39.3 2.55 2755 99.3 52667 9074 1.249 ! Near Maximum !
Rottweil R903 92.6 39.2 2.54 2754 100.0 52667 8745 1.258 ! Near Maximum !
Lovex S070 97.2 41.1 2.66 2753 97.9 52667 9234 1.250 ! Near Maximum !
Rottweil R904 101.3 42.7 2.77 2748 94.5 52667 9297 1.229 ! Near Maximum !
Somchem S355 92.4 38.7 2.51 2745 100.0 52667 8723 1.253 ! Near Maximum !
Vihtavuori N160 108.3 44.4 2.88 2734 94.4 52667 9134 1.231 ! Near Maximum !
Lovex S065 95.8 40.1 2.60 2733 98.7 52667 8929 1.251 ! Near Maximum !
Rottweil R907 94.6 39.7 2.57 2725 97.1 52667 8991 1.247 ! Near Maximum !
Bofors RP7 94.6 39.7 2.57 2725 97.1 52667 8991 1.247 ! Near Maximum !
Accurate 4064 90.0 37.7 2.44 2725 100.0 52667 8222 1.283 ! Near Maximum !
IMR 4007 SSC 91.6 39.7 2.57 2725 97.1 52667 8985 1.247 ! Near Maximum !
Somchem S361 100.3 45.7 2.96 2716 93.5 52667 9081 1.242 ! Near Maximum !
Norma MRP 2 110.0 47.0 3.05 2693 91.8 42567 10284 1.338
Bofors RP30 110.0 47.0 3.05 2693 91.8 42567 10284 1.338
Lovex S071 110.0 44.5 2.88 2687 97.4 46806 9256 1.320
Vihtavuori N570 110.0 49.6 3.21 2656 83.4 41661 10525 1.351
Hodgdon H1000 110.0 46.5 3.01 2637 90.5 44161 9527 1.315
ADI AR 2217 110.0 46.5 3.01 2637 90.5 44161 9527 1.315
Alliant Reloder-33 110.0 51.0 3.31 2570 81.7 38936 10098 1.398
ADI AR 2225 110.0 47.3 3.06 2569 91.9 37935 10015 1.411
Hodgdon Retumbo 110.0 47.3 3.06 2569 91.9 37935 10015 1.411
Lovex D100 110.0 50.6 3.28 2536 78.6 44032 8589 1.338
ReloadSwiss RS 80 110.0 51.0 3.31 2514 80.7 37169 9860 1.430
Vihtavuori 24N41 110.0 50.1 3.25 2493 74.6 40929 8764 1.378
Vihtavuori N170 110.0 46.5 3.01 2491 81.9 39129 8695 1.419
ADI AR 2218 110.0 50.1 3.25 2481 76.1 38429 9562 1.414
Norma 217 110.0 46.3 3.00 2458 87.9 32336 9757 1.516
Hodgdon H870 110.0 48.6 3.15 2425 80.1 33201 9374 1.504
Alliant Reloder-50 110.0 50.9 3.30 2352 74.7 29961 9293 1.571
Bofors 12,7mmRA NC1214 Lot20115087 110.0 49.7 3.22 2337 68.6 31282 8588 1.568
Hodgdon 50BMG 110.0 47.7 3.09 2310 66.0 33028 7939 1.520
Hodgdon US 869 110.0 50.1 3.25 2304 69.6 32727 8001 1.529
SNPE Vectan SP 13 110.0 48.1 3.11 2254 73.9 29413 7970 1.597
Accurate 8700 110.0 49.1 3.18 2210 71.0 29451 7697 1.600
PB Clermont PCL 513/520/9520 110.0 48.1 3.11 2190 70.2 27814 7610 1.638
Vihtavuori 20N29 110.0 50.6 3.28 2179 67.5 27845 7674 1.637
NC A3502 ,test only 110.0 46.0 2.98 2026 47.7 27443 5490 1.670
TLP A 502(RH) ,test only 110.0 46.0 2.98 2004 51.7 25400 5870 1.719
V1734 7-multiperf ,test only 110.0 46.0 2.98 1440 23.4 14583 2668 2.224

 

[Trnelson]

Jesus. Thank you. I appreciate you taking the time to put that together and post it.

 

[AD5GB]

Jesus. Thank you. I appreciate you taking the time to put that together and post it.

You're welcome, but no time really. Just punched in an average load with 4350 with the bullet and barrel length. A press of a button produces this list. Copy/paste. Tweaking and customization takes a little time but since Superformance isn't a listed powder (yet). Anyway, I'm new to the software and rather enjoy it.

 

[Mikecr]

You can't use QL like this, and his maximum pressure is likely well beyond 52Kpsi..
With any powder, and especially unknown powders, you work up.
If he did so, he might be fine.
Without knowing many things about the chamber/brass firing/sizing/reloading history, it's hard to say the primers mean anything at all. Could be head space and sloppy firing pin fit.