Blaser tight chambers?

[Vagrouser]

I’ve heard that Blasers can have right chambers. Any truth to this? I’m new to reloading and was wondering about neck sizing only for non dangerous game as I’ll only be reloading brass for the Blaser vs full length sizing.
Thanks from a newbie for any suggestions

[analog_peninsula]

I'd stick with full length resizing, and I'd probably buy a Wilson case length headspace gauge as well. My .300 WM definitely has a near minimum chamber, but I consider that a good thing rather than a bad thing. It's also a lights-out shooter. I'd also start out with minimum loads until you have some kind of baseline for your particular rifle.

[SPEEDY]

Never neck size only when loading for Blasers, cases will stick.
But for what it's worth neck sizing only doesn't seem to improve Blaser accuracy anyway.
But it does cause a number of other little problems.

[Vaughan]

Some years back I neck sized my R93 6br for a while. About the only effect I noted was that I got the very occasional "click" when I pulled the trigger because the action didn't lockup properly. I'm happy I experimented but now just put a bit of effort into adjusting my FL dies correctly.

[9.3x64]

Yep, full length size only.

[SPEEDY]

Some years back I neck sized my R93 6br for a while. About the only effect I noted was that I got the very occasional "click" when I pulled the trigger because the action didn't lockup properly. I'm happy I experimented but now just put a bit of effort into adjusting my FL dies correctly.

The two things I noticed was that it was either hard to feed a case in or as you said, it closes but not quite enough so you get the dead man's click.
Only a major problem if your hunting dangerous game, but I'd hate to loose the trophy of a lifetime because of that dreaded click.

Even if you run them all through the gun before hunting, you will only catch the stiff ones, the other ones seem like they chamber fine, but you don't know for sure until you squeeze the trigger.

[Rod]

Some years back I neck sized my R93 6br for a while. About the only effect I noted was that I got the very occasional "click" when I pulled the trigger because the action didn't lockup properly. I'm happy I experimented but now just put a bit of effort into adjusting my FL dies correctly.

The two things I noticed was that it was either hard to feed a case in or as you said, it closes but not quite enough so you get the dead man's click.
Only a major problem if your hunting dangerous game, but I'd hate to loose the trophy of a lifetime because of that dreaded click.

Even if you run them all through the gun before hunting, you will only catch the stiff ones, the other ones seem like they chamber fine, but you don't know for sure until you squeeze the trigger.

Yep.....

[Gamsjagd]

My own Blaser experiences with chambers has to do with the way they cut them. I was told they use wire EDM to cut them.

You must full length size every time.

[SPEEDY]

I was under the impression they didn't cut the chamber, it was formed when the hammered the rifling in it.

[Ado]

Not meaning to hijack the thread but - does anyone use Forster Bushing Bump Sizing Die Kit to bump the shoulder and neck size? Achieves a better result than just neck sizing, no?

[secondtry]

Not meaning to hijack the thread but - does anyone use Forster Bushing Bump Sizing Die Kit to bump the shoulder and neck size? Achieves a better result than just neck sizing, no?

I like the idea, and I have a new one in 30.06 but, for no particular reason, went to Redding bushing dies, both neck and FLS.

[stokesrj]

Not meaning to hijack the thread but - does anyone use Forster Bushing Bump Sizing Die Kit to bump the shoulder and neck size? Achieves a better result than just neck sizing, no?

I do have Forster Bump dies and have had good success with them but have transitioned to other methods.

I'm a little bit different than most in how I view this subject and what I have settled on and what works for me best is the Redding Competition three die sets which has a bushing neck die with a micrometer adjustment, a body die for bumping the shoulder and a sleeved bullet seater with micrometer adjustment. I neck size only for three loadings and then on the fourth bump the shoulder back to SAMMI specifications. This gives me a very good case life, very tight concentricity, and very tight extreme spreads, usually 4-6 fps with tuned loads. With some calibers I have achieved 20+ loadings per case. I have reduced the number of calibers I load for from forty one down to only four and sold or are selling all my other die sets so only four Redding Competition Die sets are in use now. I'm very happy with the results I get.

Most Blaser barrels but not all are made with a mandrel which includes the chamber and the barrel is hammer forged around this mandrel. However a few calibers they did not want to invest the high cost of building a case specific mandrel and for those they hammer forge the bore and then cut a chamber using a reamer. In my experience the chambers are not tight at all, actually towards the large side of the CIP spec. The throats are also long with more freeborn than required. The reason that so many advise against neck sizing is that the Blaser action is not tolerant of a case that is even .00!' longer than the chamber where as a traditional Mauser type bolt action will just cram that case into the chamber and size it down with the cam action of closing the bolt. However for me, I have found that body sizing every fourth loading has been flawless with several thousands of rounds fired.

[SPEEDY]

For me reloading is not about accuracy it's about consistent supply of of ammunition and cost savings.

So I just set up bog standard FL dies and I'm not overly fussy about brand, their all different brands in my reloading box.
I find a bullet that works, and then buy it in bulk with enough powder and primers for each projectile.

That way I always have the same ammunition on hand, I don't have to waste time and money developing new loads ect and it's always on the shelf safe from supply shortages.
One thing I've learned is ammunition prices keep going up every year so the savings over the life of my supply always increases.

All I want is a load that will shoot under an inch and work on the selection of game I intend to hunt with each calibre.

That's all any hunter needs unless they shoot little varmints way out or hunt LR ect.
Look after your cases and you are laughing.

[Ado]

Not meaning to hijack the thread but - does anyone use Forster Bushing Bump Sizing Die Kit to bump the shoulder and neck size? Achieves a better result than just neck sizing, no?

I do have Forster Bump dies and have had good success with them but have transitioned to other methods.

I'm a little bit different than most in how I view this subject and what I have settled on and what works for me best is the Redding Competition three die sets which has a bushing neck die with a micrometer adjustment, a body die for bumping the shoulder and a sleeved bullet seater with micrometer adjustment. I neck size only for three loadings and then on the fourth bump the shoulder back to SAMMI specifications. This gives me a very good case life, very tight concentricity, and very tight extreme spreads, usually 4-6 fps with tuned loads. With some calibers I have achieved 20+ loadings per case. I have reduced the number of calibers I load for from forty one down to only four and sold or are selling all my other die sets so only four Redding Competition Die sets are in use now. I'm very happy with the results I get.

Thank you for sharing your process - very insightful. I have only three R8 calibers and currently use the Redding Competition three die set for one (6.5x55) and the Forster Bushing Bump set/Wilson seater die and K&M Arbour press for my 6.5x47L, for better exploring competition static target shooting. I also have .300WM (primarily for driven boar hunting) but have not started reloading for that calibre - inclined to go with Redding Comp dies - greater certainty that each round will chamber properly first time if fully resized.