My Mcgowen barrel....

[RyanG]

So I got out this afternoon to do a little shooting with my new McGowen 260AI. It is 28 inches long and mounted on a flatback 110 action, stock trigger, EGW 20 MOA base, Burris Extreme Tactical rings with a SS 10x42 scope all in a Boyd's Classic stock which has been bedded. Up until this afternoon I have only shot unfireformed rounds through it. I have a total of 60 rounds through the barrel at this point.

Results:

To start today I fired 3 unfomed rounds that were loaded with 41.0 grains of IMR 4350 topped off with a 140 grain match Hornady bullet. I kind of pulled the first round a little cause I flinched and mashed the trigger pretty good. My first group was 1.43 outside to outside at a 100 yards. I was shooting from prone using a Caldwell front bag and a homemade bag in the rear. Average speed was 2630

Second group was same bullet loaded with 40.5 of IMR 4350 with an average speed of 2642 with a group size of .829 outside to outside.

Third and final group was 41.5 grains of IMR 4350 with an average speed of 2704 and group size of .689.

I pulled a snake through the bore 4 times after each group and waited about 5 min between the groups.... shots the time was less than a minute between shots.

I was hoping for a little more speed but IF I can get that group down below .5 I will be a happy camper!!!!!!!

I still have 6 different loads loaded up to try but I had to stop for the afternoon, have to take the kid to soccer practice...

Needless to say it was a good at the range and I am very very pleased with my McGowen barrel. I will order another one in the future.... oh wait I already did a 1/7 22-250!!!!

[stomp442]

Mine is running at 2950 with a 140 berger over the top of 43.5gr H4350 in a 26" barrel with five shot groups averaging about 3/4" at 200 meters. You should be able to achieve 2900 rather easily in a 28" barrel.

[the Ranger]

My first group was 1.43 outside to outside at a 100 yards.

Second group was same bullet loaded with 40.5 of IMR 4350 with an average speed of 2642 with a group size of .829 outside to outside.

Third and final group was 41.5 grains of IMR 4350 with an average speed of 2704 and group size of .689.

you're measuring outside to outside when everyone else measures center to center. your groups really measure, 1.166", .565", and .425" center to center.

[Dennis]

AWESOME,

Dennis