.22 hornet cast bullet load development

[Ray7756]

44grn cast bullets (lyman mould)with gas checks Lyman load data H110 powder min load 7.2 grn
checked loa by putting bullet into empty case and chambering it till bolt closed then removed and measured then set seating die to 40 thou inch shorter, loaded 5 rounds with 7.2 grn out to the range ( in my garden) 1 1/2 inch group, back to gunroom and load another 5 rounds this time with 7.4 grn got 3/4 inch group,,, promising so back in and load another 5 with 7.6 grn damn they were all over the place so back to the 7.4 grn but change seating depth to - 30 thou Result Keyholed them, got to play around some more so might try seating at - 20 thou but will try them in the field at 100 yds first
BTW gun is a CZ 527 American with a 1 in 16 twist
i also have a 55 grn mould so will try that next
Cheers
Ray

[hungryrob]

Good planning Ray

Happy days!

[Shootist]

Interesting research. I would be concerned about leading in the barrel if MV too high. Have you chronographed the rounds? I would take a guess that, on the basis of my results with .357 loads you may be getting near where leading will start.

[Ray7756]

Interesting research. I would be concerned about leading in the barrel if MV too high. Have you chronographed the rounds? I would take a guess that, on the basis of my results with .357 loads you may be getting near where leading will start.

Thats the reason i use gas checks, barrel leading occurs when the powder melts the base of the bullet hence gas checks to shield the base of the bullet, plus i will run a few jacketed rounds through to remove any leading, or will just give it a good old fashioned clean, but it is a good point and one i will be keeping an eye on
Must get a chrono,,,,,,,or borrow Robbies

Cheers
Ray

[hungryrob]

Interesting research. I would be concerned about leading in the barrel if MV too high. Have you chronographed the rounds? I would take a guess that, on the basis of my results with .357 loads you may be getting near where leading will start.

Thats the reason i use gas checks, barrel leading occurs when the powder melts the base of the bullet hence gas checks to shield the base of the bullet, plus i will run a few jacketed rounds through to remove any leading, or will just give it a good old fashioned clean, but it is a good point and one i will be keeping an eye on
Must get a chrono,,,,,,,or borrow Robbies

Cheers
Ray

Jake (weebeastie) still has it I think Ray.. I'll ask him

[plugg]

That bloke in Auchterarder not got it still?

[weebeestie]

Nope.
I'v still got it.

[Ray7756]

Was out with Robbie n Plug tonight tried out the hornet at 80 yds 5 rounds each all spot on, so this load is a keeper, next step is the 55grn rounds