Above the Crimp Groove

[TheLastGoodFight]

My recently purchased Ruger m77/44's magazine will not accept my 260gr EK bullets I traditionally use in my revolvers because of their length. Will it negatively effect performance if I were to seat these bullets slightly lower, perhaps above the crimp grove, so that the mag will accept them?

 

[mehavey]

Will it negatively effect performance...?

Not if you seat first (penny under the lock ring), then pull the penny/-
unscrew the seating stem up several turns crimp separately into the
cleaning band.

No problemmo.

*by EK I'm assuming a cast Keith SWC, and that the OAL change is relatively small.

 

[T. O'Heir]

You can ignore the crimp groove altogether and seat to the Max OAL.
Hodgdon gives 1.600" as the OAL for a 270 grain bullet. 1.710" for a 355 grain bullet. Both are handgun load lengths. Despite the SAAMI max being 1.610". Minimum is 1.535".