375 Ruger

[memtb]

You are correct for the most part. Hammer bullets are grooved for less pressure. and to some extent Cutting edge are as well, Lehigh does this in most bullets!

When I started with the "Original" X Bulletin……pressure was an issue as was fouling in some rifles. The pressure was easier to address than was the fouling…..thankfully, my rifle was not one of the "foulers"!

I attribute that to it being a "match grade" barrel! A friend wasn't so lucky….with his brand new SS Rem. 700 in 25-06…..you couldn't cover a 5 shot, 100 yard group with an open hand?

A lot of "elbow grease" hand lapping his barrel helped greatly…..but, it was still far from great! Though that Fall, he killed the largest bodied bull Elk that I've ever seen……with one shot. I was pretty impressed with that little 25-06! memtb

 

[98cwitr]

Aren't all mono's now with grooves……and with the grooves are they still producing higher pressures than a cup and core of equal pressure?

I thought that the grooves eliminated the pressure issues of old……but, I may very incorrect! memtb

Yes sir, however, and Ive tested this with Barnes bullets: They simply aren't gonna squish like a lead core will. Grooves or not, they're gonna have higher pressures than a standard lead core, all else being equal

 

[gorobie]

I only shoot 1 Barnes bullet these days.... a "30 CAL TTSX BT 130 GR. it's on a 30/284 Ackley Imp. 40* use it for "Speed Goats". in Colorado.

 

[memtb]

Yes sir, however, and Ive tested this with Barnes bullets: They simply aren't gonna squish like a lead core will. Grooves or not, they're gonna have higher pressures than a standard lead core, all else being equal

Now I wonder, though I'll never leave my mono's, how fast I could push a cup and core! memtb

 

[98cwitr]

Now I wonder, though I'll never leave my mono's, how fast I could push a cup and core! memtb

Only one way to find out

 

[gorobie]

win mod 70, short action push feed opened up for 284 Ctg, McMillan stock, la bounty re-bore tapered octagon BBL with flutes on flats 25 1/2" Holland brake

 

[memtb]

Only one way to find out

I do have a bunch of "blem" 270grain Hornady's…..I may have to try and see!! Maybe 3100 mv or better? memtb

 

[98cwitr]

I do have a bunch of "blem" 270grain Hornady's…..I may have to try and see!! Maybe 3100 mv or better? memtb

 

[shootist7]

That is one BIG bullet!

 

[Korhil78]

Just got back from shooting the 248 Gr hammer at 100 yards. This rifle was purpose built to be light weight. Carbon barrel, carbon stock and the recoil shows lol. I do have a terminator brake on it and thank goodness I do! The rifle will be really easy to carry in Alaska. I'm a pansy though as I shot 17 shots with no problem. I'm just used to shooting smaller calibers with suppressors haha.

I used H4350 and a CCI LRM primer.

82.5 Gr shot the best. It measured .8" center to center. I told myself if I could keep it between .75 and 1" that I would be happy since I won't be shooting it past 400-500 yards anyways.

I went all the way up to 83 Gr and still didn't see pressure. Got the speed up to 2923 fps with that one. I may see if I can get to 85 Gr but there isn't a ton of room left.

82.5 Gr H4350: 2888, 2894, 2892 fps.

 

[shootist7]

If I may Korhil78, what's your C.O.A.L.? Hammer mentions the nose length of that bullet.

Nice shooting!