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Post by redfish on Sept 3, 2017 9:20:47 GMT -5
45rempac 700ml action pacnor 26" heavy varmint savage plug. fed primers 62g 4198 .060veg 250ftx smoothformed @ 2650fps. ready to try duplexing just to to say i did. whats a good starting point?
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Post by elkman1310 on Sept 3, 2017 9:35:00 GMT -5
Why don't you just up your powder charge of IMR 4198 or H 4198. You are really on the low side of where you could or should be if you want more velocity. Also since you are using a Savage style plug going to a duplex load will only cause more flame cutting on the sealing surface of the plug. I never have found any valid reason to duplex powder nor has any powder manufacture.
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Post by dannoboone on Sept 3, 2017 9:40:32 GMT -5
Depends on the powders you have.
For duplexing, I have gone to almost all N110/IMR3031 loads. Very
accurate down to 250gr bullets. Haven't shot many 250ftx's, but a
load of 10gr N110/75gr IMR3031 with full formed 250BE's gets me
to over 3000fps and 1/2 MOA if I do my part. Same with 270 Emax.
Neither is a hunting load.
Not quite as good groups, but my hunting load with a 275gr bullet
is 10gr N110/70gr IMR3031.
This is with a 28" .451 barrel using the Savage plug.
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Post by redfish on Sept 3, 2017 9:52:09 GMT -5
is unique too fast for duplex
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Posts: 0
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Post by Deleted on Sept 3, 2017 10:38:08 GMT -5
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Post by dunthat on Sept 3, 2017 16:33:37 GMT -5
is unique too fast for duplex I've shot Unique as a booster...If I remember right it was 7/63 Unique/H4198 ....2750fps with a 250 FTX. It's works as well as the others. Personally I preferred something a little slower. |
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Post by nyhunter on Sept 3, 2017 17:11:44 GMT -5
Contact "Richard" on the board, he has a lot of experience with duplex loads.
Good luck
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Post by Richard on Sept 3, 2017 18:28:09 GMT -5
If you want to talk duplexing send me a PM and I will give you my phone number too much to type
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Post by dannoboone on Sept 4, 2017 10:34:08 GMT -5
Is your Savage plug the vent screw type or the bushing type? Duplex
loads EAT vent screws. Any primer powder faster than 4759 or N110
can open up a vent hole too much in as little as a dozen shots.
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