Thread: .22TCM Micro Varmint rifle build

I loaded some more Hodgdon Lilgun loads today, the start load of 10g.. no blown primers today.

10.0gr = 3034fps
10.5gr = 3069fps
11.0gr = 3144fps Flat primer with cratering

Im going to call 10.5gr my max load in this barrel. Ill load 5 more up and check the ES when I get a moment.
I have ordered some Alliant 300MP to test too (thanks for the heads up on that one @R93 )

I have decided not to waste time on this barrel chasing accuracy etc, it has served its purpose other than the shortening length tests which Ill get to in the next few days too.

I have made a start on machining a Shilen 1-14" twist barrel for it tonight which I think will get slightly higher velocities with less pressure and will be better to test accuracy with.
Looking at the velocities in the Remington barrel with 3 different powders tells me Im getting an average maximum velocity with the 40gr Sierra Blitzking off 3000fps(ish) with the 22" 1-12" twist barrel but Id really like to go shorter with the Shilen. Cutting an inch at a time off the test barrel should help me decide but Im leaning towards a 20" now.