I have a Glock 37.
Does any one have a load recommendation for a 230 TC cast bullet for the 45 GAP.
I have not been able to find a cast bullet load using 230 grain bullets.
Thank you.
elfego
The reason is the the GAP stands for Glock Auto Pistol and with the stock rifling in it, they, and a ton of others, suggest not using lead in their barrels. So, don't look too hard for a load for that caliber that incorporates any weight lead bullet!
Can it be done? Yes, folks I know have run lead through their stock barrels with good success. I just bought an after market barrel for mine though so there were no issues with fouling, either way.
There is a rule of thumb that a lot of loaders use when trying to determine a lead load from jacketed data. You might be able to determine the same idea by looking at the 45ACP data. Take a jacketed bullet of the same weight as the lead one you want to load, compare the loads for the same type of powder and do the same for the GAP.
This data is for the 45ACP, do not use it in the GAP. It is to illustrate the aforementioned suggestion:
200 GR. SPR JHP Hodgdon HP-38 .451" 1.155" 5.2 794 12,700 CUP 5.9 906 16,700 CUP
200 GR. CAST LSWC Hodgdon HP-38 .451" 1.225" 4.4 771 11,000 CUP 5.6 914 16,900 CUP
It would seem that a starting load of HP-38 is .8gr less for a lead bullet than a jacketed. I would use the same type of load reduction if I was using that powder in the GAP.
All of that being said it may be a moot point. There are NO 230gr loads for the GAP that I can find anywhere! So, there is no correlation for the load you want! Switch to a 200gr bullet and you can do as I suggest.
One thing you can do too is call any of the major powder companies and ask the ballistician what they recommend for components not listed in their manuals. Everyone of them are nice folks.
FWIW
