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One way to do this is to seat the bullet jammed a little, .010-.015” or so, with a REDUCED powder charge. Your case belt would still have the stopping duty, but at least you would be certain the cartridge is forced against the bolt face, in that direction.. Drop charge weight 7-8% from a safe...

The last Redding seater I had caused excessive runout. For me anything over .001 is alarming, personally.. I use a an LE Wilson for that cartridge now, no more concerns.

That’s one thing I like about 21st century Mandrels/Dies. They can self align.

Never dealt with this myself, but is there a way to orient the shell holder to allow for self-adjustment of the case as it’s pressed in? If it’s the expander ball and stem, and they aren’t bent, I’d throw the expander away and use a mandrel and mandrel die.

It didn’t bother me until I saw an impact in the frozen dirt at the feet of a large wild hog standing in a plowed corn field….I haven’t done the math, but that was the end of IMR powders in my cases about 15-20yrs ago. There was adequate distance involved for it to blow the deal, obviously. And...

I’m looking for velocity, and the shorter bearing surface of the ABLR would benefit me, there. The added BC of course helps down the line, never a bad thing. At the advice of a very experienced rifleman, I started sorting ABLR’s to the nearest .001” based on BTO length, with both a Short Action...

I like velocity in this gun, 140’s are in hand, I’ll try them first. The 110’s at 3400-3420 were awesome in my 25/06AI The 129 or 130 may be next, I assume the 129 has a shorter bearing surface.

Does anyone here run these at high speed, as in 3300+? I’m looking for a 0-350yd point and pull the trigger setup, 83gr Sherman Mega case, R23/26 or n570 powder. Whatever it takes, at 28”. Thanks, Phil

Wound it up Jan 30, 7 of us had a good shoot in the ice, ducks. Deer season consisted of mgt and cull bucks, and around 10 doe, with 3 pigs.

Midway had some R23, but ol Larry isn’t in a hurry to get rid of it. Obviously!

These 133/135 Bergers shoot great and soar a while from a 7.5” twist, I’ve run them from 3115-3200+ in a 25SS at 26”, 72gr capacity. I intend to give them a go at some point in the Mega case, 83grs, starting out at 3300-3400. It’s set up for monos right now, great velocity and precision and...

Guys, the n565 powder charges usually run the same as H1000. For comparison. It is temp stable., Usually 50-70fps more velocity than H1000. 568 normally needs a fairly roomy case to hit pressure, for me that’s been around 2grs more than 565/H1000. Also temp stable. 570 will get all there is to...

Back lobbying for a 125 gr ABLR in .257” or close in weight.

Yes, my daughters 25 mega would appreciate it also. The ABLR impressed me last season in .284 168gr and I’m looking to use them in 6.5 next season. Possibly .308 as well

N565 might be a better burn rate for those bullet sizes.? I’ve done limited testing with a 25 Sherman Mega, 82-83gr capacity, it performed well with R23 with 100gr TTSX and 116gr apex gen 3 monos. N560 would sizzle, but it’s not temp stable. Peterson brass is thick, definitely holds less than...

The new BT “ hunting” will solve any concerns you have with penetration, give better expansion and energy dump than a partition, and better precision to boot, with better BC.. I have killed plenty with 100grs at 3500+,and 115 grs at 3350+. I shot a LOT of the old ones, so I understand exactly...

Don’t build a 28nos and run it like a 7PRC! There’s always a suitable compromise based on individual needs, but those big performers are awesome when turned loose.

And maybe a bit larger!

Let er rip. More barrel blanks await us both. That erosion is a direct indicator of high performance

N568 is much milder on the throat, and maybe 50fps slower, this is from a builder/friend who also excels in F-Class.