| Rothhammer1 |
| (.400 member) |
| 18/05/21 07:20 AM |
|
Re: 250 grain Swift .375” round nose in 9.5x57 MS
|
Quote:
Thanks for the input, gentlemen.
As the 250 grain Swift A frame are practically the same length as the 270 grain Kynoch round nose I am hopeful that they will feed crimped into the existing crimping groove. I will make up a dummy and trying feeding from the magazine first.
I think that the 300 grain bullets will limit velocities in the cartridge, as well as increasing what can already be a fairly brisk recoil.
You've got the right ideas.
The most critical area of the projectile seems to be about 1/3 back from the tip (of the original specification). If you have enough 'meat' there to act as bearing surface (think of Schoenauer magazine as roller bearing race, cartridges as bearings) they should feed smoothly.
I have also read of concerns regarding additional stress to the MS' delicate stock wrist from using the 300 grainer, though many report using them without problems. I have always used 270 grain RN for the M1910 but as those become increasingly scarce and as 'unleaded' is required for critter shootin' in these here parts now, I watch such threads as these with interest.
Do let us know how things work out?