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I loaded a few test rounds of IMR4350 and 150 grain CoreLokts to 3.300" OAL but discovered they won't allow the bolt to close and it feels like the cartridge is too "long". I double checked the OAL and it is under the max OAL of 3.340". Further info is that:
1) I neck-sized the cases from Federal factory ammo I had fired from the same gun and the case length after firing was .008" under the max length
2) With shorter rounds (OAL of 2.990" using Win 748 powder) I have had no problems with feeding (accuracy was not what I hoped for though)
3) I also had the headspace checked by a smith using go/no-go gauge and was informed that all was well on that end.
Appreciate any suggestions as to what are the most likely culprits I should be checking for to figure out what is causing the problem?
1) I neck-sized the cases from Federal factory ammo I had fired from the same gun and the case length after firing was .008" under the max length
2) With shorter rounds (OAL of 2.990" using Win 748 powder) I have had no problems with feeding (accuracy was not what I hoped for though)
3) I also had the headspace checked by a smith using go/no-go gauge and was informed that all was well on that end.
Appreciate any suggestions as to what are the most likely culprits I should be checking for to figure out what is causing the problem?