260ai with 140molys

[300rumfan]

Just curious if any of the 260ai shooters have tried the Berger 140gr moly and the reloder17 combination? Looks like it should be right at 6.5-284 velocities to me.

 

[larryt]

I have loaded both the moly and non-moly in my 260AI. I did not notice a difference with using the moly, so am not using them. You may find RL17 to be a little fast for the 140. I have had excellent results,higher velocity, less pressure, larger power fill, smallest groups) using either RL19 or Norma MRP. You can fill 98 to 100% fill and get over 2900 fps. The groups have been sub 3/8 inch at 100 yds and under 5 inches at 1000 yds.

At our range the 260AI has won over 7 matches in a row including f class, 560 yd clay bird, 1000 yd steel plate, and 1000 yd paper. Almost everyone is using the 140 gr Berger non-moly with MRP.

 

[skeetlee]

how hard is the 260AI on barrels?

 

[larryt]

On one gun I have shot somewhere between 2500 and 2700 rounds with only 3 thousandths wear on the throat. Have been having excellent life with no fouling issues.

 

[Liven The Dream]

My 2 cents,
I had 260ai ran 142 sierras 47.5 gr. 4831sc. 2870, 30' Boots barrel. Won a couple 1000 yard and 600 yard Matches. The down side 960 rounds the throat moved 37 thousands.

 

[redrock]

Accurate barrel life out of the 260 AI is about half again as much of a 6.5x284

Somewhere around 2500rds on a good stainless cut rifled barrel, but not on a re chambered factory chrome molly.

Mine is a 1 8.5 Bartlain and loves the 139gr Lapua Scenars Ws2 coated with AA3100 or Ramshot Hunter.

 

[cliffe]

how can a 6.5 round that is burning 1 or 2 less grains of powder than another have 1 and 1/2 times the barrel life? cliffe